The Valve Wire sealThe Valve Wire
July 15, 2026E. Nolan Beckett, MD · Editor
LIVE · 06:15 ET · JUL 15, 2026
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The Valve Wire Archive

1494 articles

Sex-Based Patterns and Trends in Transcatheter Aortic Valve Implantation.

IMPORTANCE: Sex-related disparities affect diagnosis, referral, and prognosis of aortic valvular diseases. Contemporary US data on transcatheter aortic valve implantation (TAVI) by sex are limited. OBJECTIVE: To characterize 10-year trends in TAVI use, periprocedural complications, and long-term outcomes among Medicare beneficiaries, stratified by sex. DESIGN, SETTING, AND PARTICIPANTS: This nationwide, retrospective, population-based cohort study used US Medicare claims data from fee-for-service beneficiaries discharged after TAVI from January 1, 2013, to December 31, 2022. The median follow-up time was 2.19 (IQR, 0.94-3.79) years. Exclusions included patients who had concomitant valve surgery, infective endocarditis, valve-in-valve TAVI, transapical TAVI, TAVI for pure aortic insufficiency, or later conversion to Medicare Advantage. Analyses were conducted between October 1, 2024, and April 1, 2025. EXPOSURE: TAVI. MAIN OUTCOMES AND MEASURES: The primary outcome was all-cause mortality. Secondary outcomes included periprocedural mortality, vascular complications, acute kidney injury, major or life-threatening bleeding, stroke, acute myocardial infarction (AMI), permanent pacemaker implantation (PPI), and hospitalization for heart failure (HF). Adjusted odds ratios (AORs) and hazard ratios (AHRs) with 95% CIs were estimated. RESULTS: The study included 314 123 patients (141 233 women [45.0%] and 172 890 men [55.0%]). Women were older than men (mean [SD] age, female: 80.3 [7.8] years; male: 79.4 [7.7] years; standardized mean difference, 12%). The proportion of female patients who underwent TAVI declined from 47.6% in 2013 to 43.6% in 2022 (P < .001). Compared with men, women had higher periprocedural mortality (2.5% vs 2.2%; AOR, 1.20 [95% CI, 1.14-1.26]), vascular complications (5.8% vs 3.6%; AOR, 1.65 [95% CI, 1.60-1.71]), and bleeding (10.4% vs 6.8%; AOR, 1.67 [95% CI, 1.62-1.71]) but less PPI (16.9% vs 20.0%; AOR, 0.81 [95% CI, 0.79-0.82]). Long-term mortality was lower in female patients (AHR, 0.92; 95% CI, 0.91-0.93), although their risks of HF hospitalization, AMI, stroke, and bleeding were higher. CONCLUSIONS AND RELEVANCE: Among Medicare beneficiaries, women constituted a progressively declining proportion of patients treated with TAVI, experienced more periprocedural complications, and demonstrated modestly better long-term survival compared with men. Further work is needed to understand factors influencing these trends and to refine sex-specific strategies for optimal outcomes.

Validation of a 2-Gene Blood Test for Kawasaki Disease in Febrile Children.

IMPORTANCE: Kawasaki disease (KD) remains a clinical diagnosis without an objective molecular test. Early identification is critical to prevent coronary artery complications through timely intravenous immunoglobulin therapy. OBJECTIVE: To validate a 2-gene whole-blood quantitative polymerase chain reaction (qPCR) assay measuring IFI27 and MCEMP1 expression for distinguishing KD from other pediatric febrile illnesses. DESIGN, SETTING, AND PARTICIPANTS: This multicenter diagnostic study was conducted in Taiwan and Shanghai, China. Patient blood samples were collected prospectively between 2012 and 2023 in Taiwan and between 2022 and 2023 in Shanghai and analyzed retrospectively from children younger than 8 years with KD and febrile controls (FCs) with viral, bacterial, or mixed infections. Data were analyzed from January 2022 to August 2025. MAIN OUTCOMES AND MEASURES: Diagnostic accuracy of a prespecified 2-gene KD score derived from change in cycle threshold values normalized to glyceraldehyde 3-phosphate dehydrogenase, assessed by area under the receiver operating characteristic curve (AUC), sensitivity, specificity, predictive values, and likelihood ratios. RESULTS: A total of 541 children (mean [SD] age, 3.7 [1.9] years; 300 [55.5%] male), including 243 children with KD and 298 febrile controls, were analyzed. The KD score achieved an AUC of 0.91 (95% CI, 0.88-0.94), with a sensitivity of 94% (95% CI, 93%-97%) and a specificity of 82% (95% CI, 78%-86%). The positive likelihood ratio was 5.12, and the negative likelihood ratio was 0.05. Performance was consistent across cohorts, including incomplete KD, diverse FC etiologies, and coronary artery phenotypes. The assay was implemented as a laboratory-developed test. Analytical validation demonstrated high linearity (R2 > 0.99), precision (coefficient of variation <5%), and sample stability for up to 6 days at 4 °C or for 24 hours at room temperature. CONCLUSIONS AND RELEVANCE: This diagnostic study found that a 2-gene laboratory-developed whole-blood qPCR assay measuring IFI27 and MCEMP1 expression accurately distinguished KD from other febrile illnesses using standard molecular platforms. Prospective evaluation in broader populations is warranted to determine its clinical utility for reducing diagnostic delay and coronary complications.

First Large Comprehensive Core-Laboratory Evaluation of Implantation Depth and Clinical Outcomes in TAVR: Final Global Results from the Optimize PRO Prospective Study.

UNLABELLED: (350/350) BACKGROUND: Standardized implant protocols have shown promise in improving outcomes in transcatheter aortic valve replacement (TAVR). However, the impact of implant depth on clinical outcomes remains unclear. OBJECTIVES: To evaluate clinical and hemodynamic outcomes across varying TAVR implantation depths using data from the Optimize PRO study. METHODS: This prospective, multicenter Optimize PRO study included patients with symptomatic severe aortic stenosis undergoing TAVR with Evolut PRO/PRO+ systems. Patients were stratified by core laboratory-adjudicated non-coronary cusp implant depth. The echocardiographic outcome composite included none/trace paravalvular regurgitation, aortic mean gradient ≤10mmHg and no prosthesis-patient-mismatch at discharge. RESULTS: Patients (N=603) were stratified by implant depth: <1mm (N=88), 1 to ≤3mm (N=196), >3 to ≤5mm (N=170), and >5mm (N=149). Baseline characteristics were similar across implant depth groups, except for a higher proportion of females in higher implant depths. Higher implant depths were associated with less resheathing and recapture (27.3% [24/88], 33.7% [66/196], 48.8% [83/170], 51.7% [77/149]; P<.001), and shorter median [Q1, Q3] hospital stay (days: 1[1,1], 1[1,2], 2 [1,3], 2 [1,4]; P<.001). Rates of valve migration (0% [95% CI:NA], 0.5% [95% CI:0.1-3.6], 0.6% [95% CI:0.1-4.1], 1.3% [95% CI:0.3-5.3]; P=.63) were low across implant depth groups. The 1-year all-cause mortality or all-stroke rate was comparable across implant depth groups (8.1% [95% CI:3.9-16.2], 7.2% [95% CI:4.3-11.8], 10.7% [95% CI:6.9-16.5], 12.5% [95% CI:8.1-19.2]; P=.40). After 1 year, higher implant depths were associated with lower rates of permanent pacemaker implantation (PPI, 2.3% [95% CI:0.6-8.8], 9.2% [95% CI:5.9-14.3], 15.9% [95% CI:11.2-22.4], 20.3% [95% CI:14.6-27.7]; P<.001). Rates of New York Heart Association functional class I were numerically different across implant depth groups but did not reach statistical significance (NYHA, 77.8% [56/72], 71.8% [130/181], 65.2% [101/155], 67.7% [84/124], P=.09 across all classes). In males, echo outcome composite rates were not statistically different across depth groups (58.6%[17/29], 50.6% [39/77], 43.8% [35/80], 36.1% [26/72]; P=.14), although the exploratory trend test reached statistical significance (P=.02). CONCLUSIONS: Higher TAVR device implantation was associated with improved clinical outcomes with similar safety events, including valve migration, across depths. The long-term effect of this approach including the ability to perform redo-TAVR safely, will be further studied in the future.

Intermittent Left Bundle Branch Block After Transcatheter Aortic Valve Replacement: Electrophysiological and Clinical Significance.

CASE SUMMARY: An 87-year-old man with pre-existing first-degree atrioventricular block underwent transfemoral transcatheter aortic valve replacement (TAVR) for severe aortic stenosis. Postprocedure, he developed worsening first-degree atrioventricular block and intermittent left bundle branch block with a paradoxical electrocardiographic pattern: Slightly longer PR intervals were associated with narrow QRS beats, whereas shorter PR intervals resulted in marked QRS widening. Electrophysiology study revealed advanced infra-Hisian conduction disease, with greater prolongation of the His-ventricular interval before narrow QRS beats, prompting permanent pacemaker implantation. TAKE-HOME MESSAGE: This case demonstrates that intermittent left bundle branch block after TAVR-particularly when associated with marked PR prolongation preceding apparent QRS narrowing-warrants careful evaluation, as it may mask high-risk trifascicular disease.

PR Interval Alternans and the Mystery of Inverse Decremental Conduction.

CASE SUMMARY: A 73-year-old man with severe aortic stenosis and preexisting right bundle branch block (RBBB) underwent transcatheter aortic valve replacement. Postprocedural day 4 mobile cardiac outpatient telemetry revealed intermittent atrioventricular block. A 12-lead electrocardiogram obtained in the emergency department revealed PR interval alternans with RBBB, with longer PR following longer preceding RP intervals, and shorter PR following shorter RP intervals. He suddenly experienced cardiac arrest due to proximal atrioventricular block, requiring cardiopulmonary resuscitation. TAKE-HOME MESSAGES: Inverse decremental conduction, known as Yan conduction, demonstrates an inverse relationship between conduction time and frequency of upstream stimulation. Inverse decremental conduction within the left bundle branch in the setting of RBBB may manifest as PR alternans, heralding proximal atrioventricular block.

From Complete Heart Block to Torsades de Pointes: An Axis to Remember.

BACKGROUND: Complete atrioventricular block is a recognized cause of acquired QT prolongation and Torsades de Pointes. CASE SUMMARY: An 80-year-old woman with no known prior cardiac history presented to the emergency department with acute confusion and altered mental status. There was no reported history of syncope, palpitations or structural heart disease. Baseline electrocardiography demonstrated complete atrioventricular block with a stable junctional escape rhythm and marked corrected QT prolongation (QTc 545 ms). Continuous electrocardiography monitoring revealed sudden-onset polymorphic ventricular tachycardia consistent with Torsades de Pointes. TAKE-HOME MESSAGES: Cardiac memory-induced repolarization abnormalities can trigger Torsades de Pointes in complete complete atrioventricular block despite stable RR intervals. Sudden changes in QRS morphology and axis due to alteration of the escape rhythm during atrioventricular block with persistent T-wave orientation represent an important electrocardiographic warning sign (cardiac memory) because they may lead to further prolongation of the QTc interval and the onset of Torsades de Pointes.

7-Year Outcomes of Balloon-Expandable Versus Self-Expanding Valves in Women Undergoing Transcatheter Aortic Valve Replacement.

BACKGROUND: Female patients with aortic stenosis frequently present with a small aortic annulus (SAA), which may result in unfavorable echocardiographic cardiac function after transcatheter aortic valve replacement. However, evidence comparing the long-term outcomes of balloon-expandable valves (BEVs) and self-expanding valves (SEVs) in this context is limited. OBJECTIVES: This study compares the 7-year clinical outcomes after transcatheter aortic valve replacement using BEV and SEV in female patients. METHODS: Overall, 1,827 female patients treated with BEV and 805 treated with SEV were identified from the Optimized transCathEter vAlvular intervention-Transcatheter Aortic Valve Implantation (OCEAN-TAVI) registry. One-to-one propensity score matching (PSM) was performed to adjust for confounding factors, resulting in 744 matched patients per group. The primary clinical endpoints included all-cause mortality, stroke, and heart failure rehospitalization. RESULTS: Overall, 1,303 patients (87.6%) had a SAA. Echocardiographic assessments indicated that BEV had smaller effective orifice area and higher mean pressure gradient than did SEV throughout the follow-up period. In the PSM analysis, BEV was associated with lower all-cause mortality (51.5% vs 57.4%; log-rank, P = 0.021) and stroke at 7 years (10.8% vs 16.7%; Fine-Gray, P = 0.008). Heart failure rehospitalization rates were similar between groups. In multivariable analyses, valve type was not independently associated with long-term outcomes, and subgroup analyses considering annulus size yielded consistent results. CONCLUSIONS: For women predominantly presenting with a SAA, BEV demonstrated decreased echocardiac performance compared with SEV. Although PSM analysis indicated more favorable outcomes with BEV, valve type was not independently associated with long-term prognosis after multivariable adjustment. These findings suggest that both types of transcatheter heart valves may be an acceptable option in this patient population.

Antiplatelet Therapy and All-Cause Mortality After Transcatheter Aortic Valve Replacement: The TRITAVI Registry.

BACKGROUND: Current guidelines recommend single antiplatelet therapy (SAPT) after transcatheter aortic valve replacement (TAVR) in patients without an indication for anticoagulation. This recommendation is mainly based on a better risk profile in terms of bleeding over dual antiplatelet therapy (DAPT), although data on mortality are inconclusive. OBJECTIVES: We analyzed 6-month and 24-month mortality associated with SAPT and DAPT after femoral TAVR from the Transfusion Requirements in Transcatheter Aortic Valve Implantation registry. METHODS: The Transfusion Requirements in Transcatheter Aortic Valve Implantation is a multicenter registry including 10,071 patients undergoing TAVR. For the purpose of the present study, 4,557 patients with indication to anticoagulation, nonfemoral access, recent percutaneous coronary intervention, and procedural complications were excluded. The remaining 5,514 patients (age 81 ± 7 years, 51% males) were discharged either on SAPT (n = 3,197) or DAPT (n = 2,317). RESULTS: The SAPT group, compared with the DAPT group, experienced lower 6-month all-cause mortality (2.4% vs 5.4%; log-rank P < 0.0001) and major bleeding (0.5% vs 1.3%; log-rank P = 0.001). SAPT was associated with reduced both cardiovascular (1.3%) and noncardiovascular mortality (1.1%), as compared to DAPT (2.2%, P = 0.008 and 3.2%, P = 0.0001, respectively). At 24-month follow-up, overall mortality remained significantly lower with SAPT vs DAPT (11.7% vs 14.2%; log-rank P = 0.007). Cox regression hazard model confirmed the association of DAPT with 6-month (adjusted HR: 1.69; 95% CI: 1.20-2.37; P = 0.002) and 24-month (adjusted HR: 1.21; 95% 1.01-1.46; P = 0.04) all-cause mortality. CONCLUSIONS: In a large real-world population of all comers undergoing TAVR, SAPT was associated with a significantly lower 6-month and 24-month all-cause mortality as compared with DAPT. (Transfusion Requirements in Transcatheter Aortic Valve Implantation [TRITAVI] Study; NCT03740425).

Clinical Outcomes of the Prospective Pakistan Registry of Echocardiographic Screening in Asymptomatic Pregnant Women.

BACKGROUND: Cardiovascular disease is increasingly recognized as a leading nonobstetric cause of maternal morbidity and mortality worldwide, including low- and middle-income countries. OBJECTIVES: This study evaluated fetomaternal outcomes in women with and without structural heart disease (SHD). METHODS: From a total of 25,000 patients enrolled in the Prospective Pakistan Registry of Echocardiographic Screening in Asymptomatic Pregnant Women registry between February 2023 and April 2025, 489 pregnancies with SHD were identified and compared with 510 pregnancies without SHD. Adverse fetomaternal outcomes were evaluated in both groups as a composite endpoint, comprising fetal outcomes (preterm delivery, fetal death, or low birth weight) and maternal outcomes (maternal death and pulmonary edema). RESULTS: The SHD cohort had a higher mean maternal age (27.3 ± 5.7 vs 26.1 ± 5.2 years; P = 0.011) compared to the non-SHD cohort. Composite adverse maternal outcomes (3.7% vs 0.4%; P < 0.001), fetal outcomes (29.9% vs 13.3%; P < 0.001), and overall fetomaternal outcomes (30.7% vs 13.3%; P < 0.001) were significantly higher in the SHD compared to the non-SHD cohort. SHD was independently associated with adverse fetomaternal outcomes (adjusted OR: 2.67; 95% CI: 1.93-3.70; P < 0.001). CONCLUSIONS: Prospective Pakistan Registry of Echocardiographic Screening in Asymptomatic Pregnant Women is the first global study linking subclinical echocardiographic abnormalities in asymptomatic pregnant women to adverse fetomaternal outcomes. In a large cohort of asymptomatic pregnant women, an abnormal echocardiogram was found to be associated with 2- to 4 time as many adverse fetomaternal outcomes compared to a normal echocardiogram. Future studies are needed to evaluate optimal timing of screening, cost-effectiveness, and applicability of broad antenatal screening in higher-income countries.

Long-Term Outcomes After Transcatheter Aortic Valve Replacement in Nonagenarians: Impact of Frailty and Malnutrition.

BACKGROUND: The role of transcatheter aortic valve replacement (TAVR) in nonagenarians remains uncertain, especially regarding long-term outcomes and prognostic factors. OBJECTIVES: This study aimed to evaluate long-term outcomes of TAVR in nonagenarians, focusing on cause-specific mortality and the prognostic influence of frailty and malnutrition. METHODS: We analyzed 4,623 patients who underwent transfemoral TAVR in a multicenter Japanese registry, including 700 aged ≥90 years. Outcomes were followed for 5 years. We analyzed all-cause mortality, cause-specific mortality, and the prognostic impact of the Clinical Frailty Scale and Geriatric Nutritional Risk Index. RESULTS: At 5 years, all-cause mortality was higher in patients aged ≥90 years than in those <90 years (53.2% vs37.0%, P < 0.001), primarily due to noncardiovascular deaths such as senility and infections (32.5% vs 19.9%; P < 0.001). Cardiovascular mortality was similar (20.3% vs 17.0%; P = 0.198). Multivariable analysis showed that age ≥90 years was not an independent predictor; frailty and malnutrition were the strongest prognostic factors. A Clinical Frailty Scale-Geriatric Nutritional Risk Index heatmap revealed marked heterogeneity, identifying subgroups of nonagenarians with preserved nutrition and low frailty who achieved favorable long-term survival. CONCLUSIONS: In this large multicenter registry, excess mortality in nonagenarians after TAVR was driven mainly by noncardiovascular causes. Frailty and malnutrition, rather than chronological age, were central determinants of long-term outcomes. These findings emphasize that TAVR candidacy in nonagenarians should be guided on geriatric assessment of frailty and nutrition to identify patients most likely to achieve meaningful survival while avoiding futile interventions.

Severe Aortic Stenosis and Acute Hip Fracture: An Expedited TAVR-First Pathway.

CLINICAL CONDITION: An elderly man presented with severe symptomatic aortic stenosis (AS) and an acute acetabular fracture, representing a high-risk intersection of cardiovascular and orthopedic emergencies. KEY QUESTIONS: What are the mechanistic and clinical links between AS and hip fracture (HFx)? How should management balance the urgency of fracture fixation with the hemodynamic instability of severe AS? What are the logistical and procedural considerations for performing transcatheter aortic valve replacement (TAVR) in this setting? What antithrombotic strategy should guide periprocedural management? Which complications can be avoided with a structured, multidisciplinary pathway? OUTCOME: The patient underwent expedited, minimalist transfemoral TAVR under conscious sedation on day 1, followed by HFx repair on day 2. He recovered without complications, was discharged on day 4, and remained fully independent at 1 year with stable valve function and no paravalvular leak. TAKE-HOME MESSAGES: In carefully selected patients with severe AS and acute HFx managed at TAVR-capable centers, a coordinated, expedited TAVR-first strategy appears feasible and may enable safe, timely orthopedic repair and recovery. Antithrombotic management must be individualized. Multidisciplinary, time-sensitive management is essential, and patient selection remains paramount.

Platypnea-Orthodeoxia After TAVI for Severe Aortic Regurgitation: A Breathless Surprise.

BACKGROUND: Transcatheter aortic valve implantation (TAVI) is increasingly used in selected high-risk patients with severe native aortic regurgitation (AR). Postprocedural hemodynamic changes may cause unexpected complications. CASE SUMMARY: An 82-year-old woman underwent TAVI (JenaValve Trilogy 23 mm) for severe AR. She developed refractory hypoxemia due to platypnea-orthodeoxia syndrome from a patent foramen ovale (PFO) with right-to-left shunting. Percutaneous PFO closure (25/18 mm Amplatzer Talisman) restored oxygenation, and she was discharged in stable condition. DISCUSSION: AR correction alters ventricular loading and may reduce left-sided filling pressures, unmasking interatrial shunting, particularly in patients with preserved systolic function and septal hypertrophy. TAKE-HOME MESSAGE: Given the high prevalence of PFO, TAVI for AR may unmask right-to-left shunting, and platypnea-orthodeoxia syndrome should be considered in new-onset postprocedural hypoxemia.

Endocarditis Masquerading as Malignancy: Native Valve HACEK Infection.

BACKGROUND: HACEK (Haemophilus, Aggregatibacter, Cardiobacterium, Eikenella, Kingella) endocarditis is a rare cause of subacute infective endocarditis typically occurring in patients with pre-existing valvular pathology or structural heart disease. CASE SUMMARY: A 65-year-old male presented with months of night sweats, fevers, anemia, and weight loss concerning for malignancy. Transthoracic echocardiography was negative for vegetations. Blood cultures grew Aggregatibacter actinomycetemcomitans, and transesophageal echocardiography confirmed vegetations on the mitral and aortic valves. The patient was treated successfully with a 6-week course of intravenous ceftriaxone. DISCUSSION: This case highlights the diagnostic challenge of indolent HACEK endocarditis in the absence of traditional risk factors, presenting as malignancy, underscoring the importance of transesophageal echocardiography, even when transthoracic imaging is unrevealing. TAKE-HOME MESSAGE: In patients with persistent constitutional symptoms with negative malignancy workup, HACEK endocarditis should remain in the differential, and transesophageal echocardiography is essential for diagnosis.

First-in-Human Mechanical Leaflet Modification of Native Aortic Stenosis During TAVR.

BACKGROUND: Coronary obstruction is a life-threatening complication of transcatheter aortic valve replacement (TAVR). Mechanical leaflet modification (LM) has been developed to mitigate this risk in patients with degenerated bioprostheses. However, their use in native valves has not previously been reported. CASE SUMMARY: We report two cases of mechanical LM performed in patients with severe native aortic stenosis at high risk for coronary obstruction during TAVR. In both cases, successful LM was achieved using a dedicated device (ShortCut, Pi-Cardia), followed by TAVR. Imaging validated leaflet split and preserved coronary flow. Post procedure the patients had optimal valve hemodynamics without neurological adverse events. DISCUSSION: These cases demonstrate the technical feasibility of dedicated mechanical LM in native calcific aortic valve disease. This strategy warrants further clinical investigation. NOVELTY: This report describes, to our knowledge, the first-in-human application of mechanical LM for native aortic stenosis at risk for coronary obstruction during TAVR.

SGLT-2 Inhibitors and Outcomes After Transcatheter Aortic Valve Implantation: A Systematic Review and Meta-Analysis.

BACKGROUND: Despite successful transcatheter aortic valve implantation (TAVI) for severe aortic stenosis, residual heart failure risk and postprocedural complications persist. OBJECTIVES: The aim was to assess the association between sodium glucose co-transporter 2 inhibitor (SGLT-2i) use and clinical outcomes in patients undergoing TAVI. METHODS: A systematic search was conducted across PubMed, Cochrane Library, Google Scholar, ScienceDirect, and ClinicalTrials.gov for eligible randomized controlled trials (RCTs) and observational studies. Adjusted HRs and risk ratios were pooled for time-to-event outcomes and dichotomous outcomes, respectively. Risk of bias was assessed using the Risk of Bias 2.0 and Risk of Bias in Non-randomized Studies of Interventions-I tools for RCTs and cohort studies, respectively. RESULTS: Six studies (1 RCT, 5 cohorts) including 35,075 patients were included in the analysis. In pooled analyses, SGLT-2i use was associated with a significantly lower risk of major adverse cardiovascular events (pooled HR: 0.65; 95% CI: 0.44-0.95; P = 0.03; I2 = 26%), heart failure hospitalization (pooled HR: 0.58; 95% CI: 0.40-0.86; I2 = 59%; P = 0.007), all-cause mortality (pooled HR: 0.71; 95% CI: 0.55-0.91; P = 0.007; I2 = 75%), and cardiovascular death (pooled risk ratio: 0.55; 95% CI: 0.34-0.89; P = 0.01; I2 = 36%). The Grading of Recommendations Assessment, Development, and Evaluation assessment was downgraded due to heterogeneity, potential bias, and nonrandomized design of studies. CONCLUSIONS: This meta-analysis suggests that peri-operative SGLT-2i use was associated with lower cardiovascular events post-TAVI albeit with low certainty due to predominance of observational studies. These findings are hypothesis generating rather than causal inference. Future clinical trials are warranted.

Leaflet Modification to Mitigate Coronary Obstruction Risk During TAVR: Results From the LOFTER-TAVR Registry.

BACKGROUND: Coronary obstruction (CO) is a rare but life-threatening complication of transcatheter aortic valve replacement (TAVR). Leaflet modification techniques have been developed to mitigate this risk; however, real-world evidence remains scarce. OBJECTIVES: The aim of this study was to report procedural and 30-day outcomes of patients at high risk for CO undergoing leaflet modification. METHODS: LOFTER-TAVR (Leaflet mOdiFication Techniques to prEvent coRonary obstruction risk during Transcatheter Aortic Valve Replacement) was an international, multicenter registry of consecutive patients undergoing leaflet modification before TAVR (September 2019 to January 2026). Coprimary endpoints were leaflet modification-directed technical success and Valve Academic Research Consortium 3 (VARC-3) technical success. Secondary endpoints included in-hospital and 30-day outcomes. RESULTS: A total of 293 patients underwent leaflet modification, including 202 (68.9%) through a leaflet-splitting approach and 91 (31.1%) through an intraleaflet disruption approach. Overall, 139 of 293 (47.4%) treated valves were natives. Successful leaflet traversal occurred in 310 of 318 leaflets (97.5%; 95% CI: 94.9%-98.9%) and successful leaflet modification in 306 of 318 leaflets (96.2%; 95% CI: 93.3%-97.9%). Leaflet modification-directed technical success was achieved in 251 of 293 patients (85.7%; 95% CI: 81.0%-89.4%) and VARC-3 technical success in 254 of 293 patients (86.7%; 95% CI: 82.1%-90.3%). Notably, 91.1% (95% CI: 87.1%-94.0%) of patients underwent TAVR without CO events. Delayed CO occurred in 3 of 293 patients (1.0%; 95% CI: 0.3%-3.0%). The median follow-up duration was 100 days (Q1-Q3: 30-443 days). At 30 days, freedom from VARC-3 early safety was achieved in 181 of 293 patients (61.8%; 95% CI: 56.5%-67.6%). CONCLUSIONS: Leaflet modification techniques demonstrated high technical feasibility across a broad anatomical spectrum but carried considerable early clinical risk. These findings support its role as an adjunctive strategy for selected patients undergoing TAVR, although in the context of careful preprocedural planning and a structured multidisciplinary approach.

BenchTop Validation of UNICORN Leaflet Modification Technique in Redo-Transcatheter Aortic Valve Replacement.

BACKGROUND: Coronary obstruction is a critical risk in valve-in-valve transcatheter aortic valve replacement (TAVR). The UNICORN (undermining iatrogenic coronary obstruction with radiofrequency needle) technique mitigates this risk via intraleaflet valve deployment. However, comprehensive bench testing data regarding this technique is lacking in the literature. OBJECTIVES: The aims of this study were to evaluate leaflet behavior after intraleaflet balloon dilatation across different transcatheter heart valve (THV) platforms, simulate the crossing of a second THV across de novo fenestrations, and understand leaflet behavior during and after deployment. METHODS: In vitro bench testing used 4 index THV platforms: SAPIEN 3, Evolut, Navitor, and ACURATE neo2. Following leaflet traversal, target leaflets underwent sequential balloon dilatation (8-14 mm). We assessed the maximum balloon size tolerated without laceration, the minimum size required for a second balloon-expandable THV (SAPIEN 3 Ultra RESILIA) to cross the fenestration, deployment feasibility, and postdeployment valve geometry. RESULTS: Most index THV leaflets tolerated balloon dilatation up to 12 to 14 mm without laceration. A minimum fenestration size of 12 to 14 mm facilitated most of the second THV crossing. Postdeployment models confirmed coronary clearance on the treated side. Successful intraleaflet THV deployment was achieved with the SAPIEN 3, Evolut, and ACURATE neo2. Conversely, intraleaflet deployment in the Navitor (and Portico) platform was unsuccessful; the leaflet remained intact following expansion, resulting in frame distortion and inner-valve tilting possibly due to stiff leaflet and compliant frame. CONCLUSIONS: This bench study defines optimal balloon sizing for UNICORN across common THV platforms and confirms coronary clearance. It was determined that one index valve resisted intraleaflet deployment. Further clinical validation is required before widespread adoption.

Leaflet Modification Technique With UNICORN in Failed Aortic Bioprosthesis: Procedural Step-by-Step, Best Practice, and Troubleshooting.

The UNICORN (undermining iatrogenic coronary obstruction with radiofrequency needle) technique was developed in 2022 to reduce the risk for coronary obstruction during valve-in-valve transcatheter aortic valve replacement. The procedure involves traversing the target leaflet with an electrified wire, followed by serial dilation with coronary and peripheral balloons. A balloon-expandable valve is then delivered into the de novo fenestration for intraleaflet deployment. As the balloon-expandable valve expands, the target leaflet is opened and displaced away from the at-risk coronary ostium, resulting in a minimal neoskirt on the target side. Since its introduction, the technique has been adopted at numerous centers worldwide, with various modifications and adaptations. In this paper, a step-by-step description of the UNICORN procedure is provided, and troubleshooting strategies for potential challenges are discussed.

Successful Bailout for Transcarotid Delivery Failure of Transcatheter Aortic Valve.

CASE SUMMARY: Transcarotid-transcatheter aortic valve implantation (TC-TAVI) generally enables smooth transcatheter heart valve crossing given its proximity to the aortic annulus; however, severe anatomical constraints may still lead to delivery failure. We report a TC-TAVI case in which transcatheter heart valve passage across the aortic valve was initially unsuccessful because of aortic angulation and extensive leaflet calcification. This technical difficulty was effectively resolved using the buddy balloon technique, which enabled successful valve advancement. This case demonstrates that the superior pushability of the TC approach may not overcome extreme anatomical resistance, necessitating predilatation aggressively indicated for such challenging anatomies. TAKE-HOME MESSAGES: Pronounced aortic angulation and severe leaflet calcification can hinder transcatheter heart valve delivery, even during TC-TAVI, where easier valve crossing is typically anticipated. These anatomical factors remain significant predictors of delivery failure, irrespective of the vascular access route.

Intravascular Ultrasound-Guided and Angiography-Guided Chimney Stenting for Proactive Coronary Protection in High-Risk TAVR.

BACKGROUND: We report a proactive coronary protection strategy during transcatheter aortic valve replacement (TAVR) using intravascular ultrasound (IVUS)-guided decision making and chimney stenting in patients with high-risk anatomy. CASE SUMMARY: Two patients with severe symptomatic aortic stenosis and unfavorable coronary anatomy on preprocedural computed tomography underwent TAVR with planned coronary protection. Despite preserved angiographic flow after valve deployment, IVUS identified critical leaflet-to-coronary proximity in one case, whereas significant ostial compromise was detected by angiography in the other. Chimney stenting was performed, ensuring maintained coronary patency. Both patients had favorable clinical outcomes without periprocedural complications and good follow-up results. DISCUSSION: These cases highlight some limitations of angiography and the complementary value of IVUS in selected situations and support a proactive decision-making process for an imaging-guided approach to coronary protection during TAVR. TAKE-HOME MESSAGE: A proactive, imaging-guided decision-making approach to coronary protection is recommended in cases of high-risk TAVR.

Minimally Invasive TAVR Explantation and Aortic Valve Replacement in a Patient With a Retrosternal Conduit.

BACKGROUND: Reports of minimally invasive approaches, such as right minithoracotomy, for valve surgery after transcatheter aortic valve replacement (TAVR) are limited, particularly in patients undergoing retrosternal esophageal reconstruction. CASE SUMMARY: A 78-year-old woman with a retrosternal colonic conduit postesophagectomy underwent transfemoral TAVR 4 years ago. She presented with progressive dyspnea due to structural valve degeneration. Valve-in-valve TAVR was unsuitable because of the anticipated patient-prosthesis mismatch. A right minithoracotomy was performed to avoid conduit injury. The degenerated prosthesis was safely explanted using traction sutures and forceps-assisted crushing, and a sutureless prosthesis was implanted. Concomitant mitral and tricuspid annuloplasty and excision of the left atrial appendage were also performed. Postoperative echocardiography confirmed normal function of the implanted aortic valve. DISCUSSION: When valve-in-valve TAVR is not feasible, minimally invasive TAVR explantation via right minithoracotomy may be considered to avoid conduit injury. TAKE-HOME MESSAGES: TAVR explantation and redo aortic valve replacement can be safely performed via the right minithoracotomy approach. In patients undergoing retrosternal conduit reconstruction, a right minithoracotomy approach is useful for avoiding conduit injury. Pericardial suspension allows the reconstructed conduit to be held and effectively protected during the surgery.

From Theory to Practice: GPT-Supported Data Extraction in Observational Studies on Transcatheter Aortic Valve Replacement.

BACKGROUND: Manual record abstraction is the standard method for data collection in observational studies but is labor-intensive, error-prone, and difficult to scale, particularly when information is embedded in unstructured electronic health records. Large language models (LLMs) may streamline this process, yet evidence from real-world clinical research remains limited. OBJECTIVES: This study evaluated the performance of a generative pre-trained transformer (GPT)-based LLM in extracting sociodemographic, procedural, and outcome variables from free-text electronic health records of patients undergoing transcatheter aortic valve replacement. METHODS: We conducted a retrospective analysis of medical and nursing records for all transcatheter aortic valve replacement procedures performed at Ca' Foncello Hospital (Treviso, Italy) between January and June 2024. Manual abstraction by 2 reviewers served as the reference standard. Accuracy, sensitivity, and specificity with 95% CIs were calculated. Agreement for continuous variables was assessed using Bland-Altman analyses. RESULTS: A total of 108 cases were included. GPT achieved accuracy ranging from 0.657 (valve brand) to 1.00 (gender, Barthel index, procedure timings, and several intraoperative complications). Sensitivity reached 1.00 for rare but clinically important events, including intraoperative neurological complications, whereas specificity exceeded 0.90 for most variables. For vital parameters, Bland-Altman analyses demonstrated minimal bias and narrow limits of agreement. CONCLUSIONS: GPT-based data extraction showed high accuracy across a broad range of variables, particularly continuous repeated measurements and rare intraoperative outcomes. Performance was lower for some infrequent postoperative events, reflecting sparse true positives. These findings support the feasibility of integrating LLM-assisted extraction into observational research workflows, with further validation needed in larger or multicenter cohorts.

Modified Guide Anchoring "UNICORN" Technique for Valve-in-Valve TAVI: Navigating Hostile Anatomy With Leaflet Laceration.

BACKGROUND: Sutureless bioprostheses present unique challenges for valve-in-valve (ViV) transcatheter aortic valve implantation due to their frame architecture and proximity to coronary ostia. CASE SUMMARY: A 71-year-old woman with a failing Perceval valve with high-risk coronary anatomy precluding chimney stenting and Bioprosthetic Aortic Scallop Intentional Laceration to prevent Iatrogenic Coronary Artery obstruction. Leaflet traversal of the right coronary cusp was achieved through an MPA1 guide. The guide was advanced across the bioprosthetic frame into the left ventricle immediately post-traversal to secure position. This facilitated wire exchange and leaflet laceration. A balloon-expandable valve was then successfully implanted. DISCUSSION: Unlike stented valves, the sutureless valve crown creates a mechanical trap. Its 1-mm clearance precluded chimney stenting due to sandwich compression risk, whereas effaced sinuses prevented Bioprosthetic Aortic Scallop Intentional Laceration to prevent Iatrogenic Coronary Artery obstruction leaflet splaying. The modified UNICORN guide anchoring maneuver bypassed these hurdles, securing the ventricle to facilitate stable, efficient mechanical modification in no-option anatomy. TAKE-HOME MESSAGE: Guide anchoring provides a shorter blueprint for complex scenarios by securing ventricular access and enabling mechanical laceration.

Impact of Tissue Treatment and Leaflet Design on Fifth-Generation Balloon-Expandable Transcatheter Heart Valve Function.

BACKGROUND: The SAPIEN 3 Ultra RESILIA (S3UR) transcatheter heart valve incorporates RESILIA-treated tissue and new commissural attachments in smaller valve sizes (20 and 23 mm). However, detailed performance data are lacking. OBJECTIVES: The aim of this study was to compare the S3UR with the SAPIEN 3 Ultra (S3U) transcatheter heart valve on the bench for transcatheter aortic valve replacement (TAVR), valve-in-valve (VIV), and redo-TAVR. METHODS: For index TAVR, 23- and 26-mm S3UR and S3U valves were compared at nominal size and during underexpansion. For VIV testing, 23-mm study valves were implanted in 25-mm Epic and 23-mm Mitroflow valves. Redo TAVR involved the implantation of 23-mm study valves in a 26-mm Evolut PRO valve. Hydrodynamic testing assessed mean gradient (MG), geometric orifice area, effective orifice area (EOA), opening index, pinwheeling, and leaflet motion. Histology, light transmission, micrometering, micro-computed tomography, and uniaxial tensile testing compared S3UR and S3U pericardium samples. Leaflet splay area was compared after leaflet modification. RESULTS: For index TAVR, 26-mm S3U and S3UR valves demonstrated comparable performance. In contrast, the 23-mm S3UR valve showed a lower MG (6.7 mm Hg vs 7.3 mm Hg) and larger EOA, geometric orifice area, and opening index than the 23-mm S3U valve, with MG differences increasing during underexpansion. In VIV, the 23-mm S3UR valve demonstrated systolic leaflet fluttering and hydrodynamics similar to those of S3U. In redo-TAVR, the S3UR showed a slightly lower MG and a marginally larger EOA. By micrometering, S3UR leaflet pericardium was thinner than S3U leaflet pericardium (0.28 ± 0.02 mm vs 0.36 ± 0.03 mm), but S3UR pericardium showed significantly higher tensile strength. S3UR leaflets splayed almost 40% less after modification with a central basal split. CONCLUSIONS: Commissural changes in smaller S3UR valves and thinner leaflets drive differences in hydrodynamics, leaflet motion, tensile strength, and leaflet splay after leaflet modification. This warrants further study.

A Proposed Anatomical-Fluoroscopic Workflow to Identify the Optimal Split Line for Leaflet Modification in Redo-TAVR.

BACKGROUND: The optimal leaflet modification strategy in redo transcatheter aortic valve replacement (TAVR) needs further refinement. OBJECTIVES: The aims of this study were to clarify the anatomical relationship between transcatheter aortic valve leaflets and related structures by assessing leaflet suture lines, nodes, and commissural tabs and to propose a workflow to guide leaflet modification in redo-TAVR. METHODS: The leaflet suture line and its relationship with nodes and commissural posts on the frames of SAPIEN 3, Evolut, Navitor, and ACURATE neo2 transcatheter aortic valves were identified. Leaflet regions were classified as modifiable, challenging, or nonmodifiable. Vertical leaflet split lines within the modifiable zone were proposed, and the lowest node along each split line was identified as a fluoroscopic landmark to guide leaflet modification. Preprocedural computed tomography helped determine the relationship between commissural orientation and coronary ostia to identify ideal split line(s) in proximity to the ostia to avoid obstruction. RESULTS: For each valve type, the leaflet suture line and its relationship to commissural posts and valve frame were visible at multiple perspectives. The number and respective lengths of proposed split lines were identified (SAPIEN 3, A-D, 6.0-16.0 mm; Evolut, A-E, 5.0-13.0 mm; Navitor, A-C, 10.0-23.0 mm; and ACURATE neo2, A-D, 7.0-18.0 mm). Preprocedural computed tomography identified the ideal split line(s) facing the coronary ostia. A 4-step workflow to guide leaflet modification in redo-TAVR was proposed. CONCLUSIONS: The authors propose a systematic, imaging-guided approach to leaflet modification in redo-TAVR. Further studies are ongoing to evaluate and validate its feasibility and effectiveness.

Leaflet Modification for Redo-TAVR: Impact of Valve Type, Expansion, and Failure Mode-A Bench Study.

BACKGROUND: Leaflet modification (LM) techniques are of interest in redo transcatheter aortic valve replacement (TAVR). However, factors impacting the efficacy of LM are poorly understood. OBJECTIVES: The aim of this study was to investigate the effects of valve constraint, redo-TAVR sizing, flow, and valve pathology on LM efficacy. METHODS: Naive and degenerated transcatheter heart valves (THVs) were used to evaluate BASILICA (bioprosthetic or native aortic scallop intentional laceration to prevent iatrogenic coronary artery obstruction), balloon-assisted BASILICA (BA-BASILICA), and balloon laceration. Conditions included: 1) degree of annular constraint of the index THV (modeled using different annular sizes); 2) flow conditions during deployment of the second THV (pulsatile vs continuous flow in a simulated deployment system); 3) leaflet modification pattern; 4) degree of oversizing of the second THV; and 5) extent and type of leaflet degeneration in the index THV. Quantitative outcomes included splay area, functional splay area, and variability in splay geometry across repeated deployments. RESULTS: When unconstrained, BASILICA created a splay in SAPIEN, Evolut, and ACURATE valves but not in Navitor valves, with BA-BASILICA improving splay for ACURATE and Evolut valves. Annular constraint at the minimum diameter per the THV instructions for use reduced splay in all THVs, with the greatest effect in Evolut valves. Nonbasal and angled leaflet splits impacted leaflet splay. Simulated redo-TAVR under flow conditions caused variability of leaflet splay for all THVs. Balloon laceration resulted in highly variable splay patterns ranging from complete clearance to obstruction. Oversizing of the second THV resulted in larger splay areas. Leaflet fibrosis diminished functional splay area. Increasing calcification resulted in irregular cuts and decreased splay. CONCLUSIONS: Leaflet splay following LM for redo-TAVR is highly dependent on THV type and constraint, implantation of the second THV, laceration pattern, and the nature of index THV degeneration.

Comparison of Leaflet Modification Techniques for TAV-in-TAV: Insights From Bench Testing.

BACKGROUND: Transcatheter aortic valve (TAV) leaflet modification can reduce the risk for coronary obstruction caused by the leaflet neoskirt created during TAV-in-TAV procedures. OBJECTIVES: The aim of this study was to evaluate the leaflet splay geometry created by different leaflet modification techniques across the spectrum of TAV-in-TAV combinations. METHODS: BASILICA (bioprosthetic or native aortic scallop laceration to prevent iatrogenic coronary artery obstruction during TAV replacement), balloon-assisted BASILICA (BA-BASILICA), and UNICORN (undermining iatrogenic coronary obstruction with radiofrequency needle) were simulated on the bench in short-in-tall, short-in-short, and tall-in-short TAV-in-TAV combinations. High-resolution images were used to evaluate leaflet splay geometry and measure the leaflet splay area. Splay obstruction caused by the skirt from the index or second TAV was subtracted from the leaflet splay area to define the functional splay area (FSA). Factors influencing the FSA were evaluated. RESULTS: Across all tested TAV-in-TAV combinations, BASILICA and BA-BASILICA created similar vertical V-shaped LSAs, measuring between 19.2 and 64.9 mm2. UNICORN created the largest LSAs for short-in-tall and short-in-short combinations, measuring 2 to 10 times larger than those created with BASILICA and BA-BASILICA. UNICORN with intraleaflet deployment was not feasible for tall-in-short combinations and required predeployment balloon laceration of the leaflet, which created an unpredictable splay outcome. The greatest degree of splay obstruction, up to 93%, was observed for tall-in-short combinations, resulting in the smallest FSA after BASILICA and BA-BASILICA. The FSA following leaflet modification could be improved by ensuring commissural alignment and lowering the implantation depth of the second TAV. CONCLUSIONS: BASILICA and BA-BASILICA create similar sized vertical splays in the leaflet neoskirt, whereas UNICORN generates larger FSAs but only when intraleaflet deployment is feasible. The design, alignment, and implantation depth of the second TAV may influence the FSA after leaflet modification.

CT-Based Risk Stratification of Coronary Obstruction During TAVR: Clinical Utility and a New Volumetric Parameter.

BACKGROUND: Coronary obstruction (CO) during transcatheter aortic valve replacement (TAVR) is rare but potentially fatal. Computed tomography (CT)-based risk assessment algorithms aim to identify high-risk patients, but their utility remains underexplored. OBJECTIVES: The aim of this study was to examine the clinical utility of a CT-derived algorithm for predicting CO during TAVR and identify predictors of CO despite coronary protection (CP). METHODS: In this prospective study, 164 patients at risk for CO during TAVR were enrolled. Preprocedural CT was used to classify risk using a published algorithm. A novel volumetric parameter, valve-to-coronary volume (VTCV), was calculated in high-risk cases using sinus width and valve-to-coronary (VTC) distance. The decision to use CP was left to the heart team. Clinical endpoints followed Valve Academic Research Consortium 3 definitions. RESULTS: According to the CT-based algorithm, 58.5% of patients (96 of 164) were at low risk, 24.4% (40 of 164) at intermediate risk, and 17.1% (28 of 164) at high risk. CP was performed in 12.8% of low-risk patients (16 of 125), 52.8% of intermediate-risk patients (28 of 53), and 93.9% of high-risk patients (31 of 33). All CO events (n = 7) occurred in the high-risk group. VTC distance and VTCV were significantly lower in patients with CO (P = 0.006 and P = 0.005, respectively). VTCV independently predicted CO (area under the curve, 0.841; 95% CI: 0.702-0.979; P < 0.001), outperforming VTC distance alone. The predictive value of VTCV was validated in an external cohort including 11 European centers. CONCLUSIONS: A CT-based algorithm stratifies patients into 3 CO risk categories, though the decision for CP in clinical practice seems to incorporate additional clinical and procedural variables. Although CP reduces CO risk, its efficacy is limited in patients with very small VTCV, which can be predicted preprocedurally via CT. (Leipzig TAVR Registry; NCT05015452).

Impact of Leaflet Modification on the Occurrence of Hypoattenuated Leaflet Thickening After Valve-in-Valve Transcatheter Aortic Valve Replacement.

BACKGROUND: Valve-in-valve (ViV) transcatheter aortic valve replacement (TAVR) is an established therapy for failed bioprosthetic valves but carries risks for coronary obstruction and subclinical leaflet thrombosis, characterized by hypoattenuated leaflet thickening (HALT) on multidetector computed tomography. Intentional leaflet modification techniques, such as BASILICA (bioprosthetic or native aortic scallop intentional laceration to prevent iatrogenic coronary artery obstruction), have been developed to prevent coronary obstruction, but their impact on leaflet thrombosis remains unclear. OBJECTIVES: The aim of this study was to evaluate the association of intentional leaflet modification with the incidence of HALT in patients undergoing ViV TAVR. METHODS: In a retrospective analysis of 141 patients undergoing ViV TAVR with postprocedural multidetector computed tomography, 61 patients received leaflet modification, and 80 underwent standard ViV TAVR without leaflet modification. Baseline characteristics, post-TAVR computed tomographic findings including HALT, and other procedural outcomes were compared. A sensitivity analysis stratified outcome by transcatheter heart valve type. Predictors of HALT were assessed using multivariable logistic regression with clinically relevant covariates. RESULTS: Leaflet modification was more frequently performed in female patients (62.3% vs 45%; P = 0.04) and those with small (≤21 mm) prosthetic valves (50% vs 22.5%; P < 0.001). Patients undergoing leaflet modification had significantly lower postprocedural mean transvalvular gradients (13 ± 6 mm Hg vs 18 ± 9 mm Hg; P < 0.001) and a reduced incidence of HALT (19.7% vs 40%; P < 0.01) compared with those without leaflet modification. These findings persisted after the analysis was restricted to self-expanding transcatheter heart valves. HALT involving multiple leaflets was numerically less common with leaflet modification (33.3% vs 65.6%; P = 0.054), and thrombosis predominantly affected nonlacerated cusps (66.6% vs 33.3%). No cases of HALT were observed in patients undergoing dual-leaflet modification. Reduced leaflet motion was identified in one-third of patients with HALT, with no significant difference between groups. CONCLUSIONS: In patients undergoing ViV TAVR, intentional leaflet modification is associated with a significantly reduced incidence of HALT, suggesting a protective association with subclinical leaflet thrombosis. These results support a potentially hemodynamic benefit of leaflet modification beyond coronary obstruction prevention.

Pulmonary Artery Perforation From Right Heart Catheterization: Successful Management Using the Ping Pong Guide Technique.

BACKGROUND: Pulmonary artery perforation is an uncommon complication of right heart catheterization (RHC), with potentially lethal consequences. CASE SUMMARY: An older woman undergoing transcatheter edge-to-edge repair under general anesthesia, had sudden bleeding from her endotracheal tube after RHC. This was followed by de-saturation and drop in blood pressure. Repeat RHC demonstrated left pulmonary artery perforation and pseudoaneurysm. Following wedge balloon occlusion of the perforation, a second femoral access was used to deliver a 12-mm Amplatzer vascular plug to seal the neck. The ping pong technique controlled active bleeding and allowed for successful device delivery for definitive management. DISCUSSION: Pulmonary artery perforation is both a rare and lethal complication that requires rapid diagnosis and treatment. TAKE-HOME MESSAGES: Respiratory tract bleeding following RHC should be considered pulmonary artery perforation until proven otherwise. The Ping Pong Guide technique is a feasible and safe treatment option.

Understanding Outcomes in Hemodialysis Patients Who Underwent Transcatheter Aortic Valve Replacement With the Latest Devices.

BACKGROUND: The poor prognosis of hemodialysis (HD) patients following transcatheter aortic valve replacement (TAVR) has been established; however, data on the outcomes in the latest generation of devices remain inconsistent. OBJECTIVES: The authors aimed to compare the 1-year clinical outcomes post-TAVR using the latest generation of devices in HD and non-HD patients. METHODS: From the multicenter registry, 760 HD and 3,928 non-HD patients were identified from the OCEAN-TAVI (Optimized transCathEter vAlvular iNtervention-Transcatheter Aortic Valve Implantation; UMINID:000020423) registry. To minimize differences in baseline characteristics, 1:1 propensity score matching (PSM) was performed (490 patients each). The primary clinical endpoint was all-cause mortality at 1 year. Secondary endpoints included cardiovascular death, stroke, and heart failure rehospitalization. RESULTS: In the overall cohort, during 208 (41-373) days of follow-up, HD patients had higher 1-year mortality than non-HD patients (105 of 760 [13.8%] vs 189 of 3,928 [4.8%], HR: 2.62; 95% CI: 2.13-3.23; P < 0.001); this difference was attenuated (59 of 490 [12.0%] vs 65 of 490 [13.3%], HR: 1.03; 95% CI: 0.75-1.42; P = 0.858) following well-balanced PSM. There were no significant differences in any secondary endpoints between the 2 groups after PSM; however, HD remained an independent predictor of 1-year mortality in a multivariate analysis of the cohort before PSM. CONCLUSIONS: The poor prognostic value of HD was attenuated after adjusting for baseline risk factors. These findings suggest that the poor outcomes of HD patients result from the burden of multiple comorbidities in addition to the HD risk itself. Considering TAVR as a treatment option for exceptionally high-risk populations will aid in the careful patient selection and realistic prognostic assessments.

Valve-in-Valve TAVR for Degenerated Perceval Valves: From Entrapment to Success.

BACKGROUND: Valve-in-valve transcatheter aortic valve replacement (ViV-TAVR) is an established treatment option for bioprosthetic valve failure. The sutureless Perceval bioprosthesis presents unique technical challenges because of the valve's supra-annular nitinol ring, lack of radiopaque markers, and potential difficulty with central valve crossing and entrapment of devices within the supra-annular ring. CASE SUMMARY: We report 2 cases of Perceval degeneration managed with ViV-TAVR using balloon-expandable Edwards Sapien 3 Ultra valves. In the first case, standard retrograde crossing led to delivery system entrapment despite multiple conventional methods for assessing central crossing, requiring multiple complex bailout maneuvers including balloon-assisted displacement and TAVR delivery system snaring. In the second case, after failed central retrograde crossing, antegrade transseptal approach with arteriovenous loop formation enabled precise central crossing. After wire externalization via the femoral artery, standard retrograde TAVR delivery and successful valve deployment were performed without complication. Both patients experienced favorable outcome and symptom resolution at follow-up. TAKE-HOME MESSAGES: These cases highlight the importance of preprocedural planning, advanced imaging guidance, and alternative access and crossing strategies when performing ViV-TAVR in Perceval valves. The antegrade approach may be safer, is reproducible, and saves on procedure time.

Left Ventricular Assist Device Implantation and Aneurysmectomy for a Giant Left Ventricular Aneurysm.

BACKGROUND: Implanting a left ventricular assist device (LVAD) for end-stage heart failure with a giant left ventricular aneurysm is challenging, primarily owing to risks of unstable anchoring and inflow malalignment. CASE SUMMARY: A 68-year-old woman with a giant left ventricular aneurysm underwent bridge-to-transplant LVAD implantation, revascularization, and partial aneurysmectomy. A modified turtleneck technique secured the device. However, profound reverse remodeling caused delayed downward pump migration at 9 months, resulting in cerebral infarction. DISCUSSION: While the turtleneck technique provides reliable initial anchoring, dynamic postoperative geometric shifts pose ongoing risks. This case underscores the necessity of vigilant serial imaging to detect and manage late pump displacement. TAKE-HOME MESSAGES: The modified turtleneck technique facilitates stable LVAD implantation in end-stage heart failure patients with giant left ventricular aneurysms. However, profound reverse remodeling postoperatively necessitates serial imaging surveillance to detect and manage delayed pump migration.

TAVR With Patient-Specific Coronary Alignment for a Patient With an Anomalous Left Coronary Artery.

BACKGROUND: An anomalous coronary artery is rare in patients undergoing transcatheter aortic valve replacement (TAVR). Achieving coronary alignment when performing TAVR can be challenging, but it is essential to preserve future coronary access and redo-TAVR options, particularly in younger patients with a longer life expectancy. CASE SUMMARY: A 62-year-old patient with severe, symptomatic bicuspid aortic stenosis and an anomalous left coronary artery underwent TAVR without complications. TAVR with coronary alignment was achieved by relying on patient-specific fluoroscopic projections and meticulous preprocedural cardiac computed tomography (CT) planning. DISCUSSION: An anomalous coronary anatomy can complicate TAVR planning and execution. Meticulous preprocedural planning based on cardiac CT is key in order to be successful and obtain patient-specific coronary alignment. TAKE-HOME MESSAGES: When treating younger patients with TAVR, identifying an anomalous coronary artery with an aberrant origin is important. TAVR with patient-specific coronary alignment in case of an anomalous coronary artery is feasible and requires meticulous preprocedural CT planning.

Emergency Transcatheter Aortic Valve Replacement in Cardiogenic Shock Caused by Severe Bicuspid Aortic Valve Stenosis.

BACKGROUND: Treatment of severe aortic stenosis in cardiogenic shock remains challenging, particularly in younger patients with bicuspid valve stenosis (BVS). CASE SUMMARY: A 51-year-old woman with severe high-gradient BVS presented in cardiogenic shock with multiorgan dysfunction. Given hemodynamic instability, the heart team proceeded with urgent transcatheter aortic valve replacement. A 26-mm balloon-expandable Edwards SAPIEN 3 Ultra RESILIA valve was successfully implanted, resulting in rapid hemodynamic stabilization. DISCUSSION: This case highlights the importance of urgent heart team decision-making in unstable patients with severe BVS. Lifetime management requires individualized device selection considering annular dimensions, calcification pattern, coronary access, and future redo-procedure strategies. TAKE-HOME MESSAGES: In the presence of refractory cardiogenic shock, transcatheter aortic valve replacement may be the preferred treatment strategy and should be considered as part of an individualized lifetime management strategy.

Abbreviated DAPT Regimens Across the Entire Spectrum of Bleeding Risk According to the PRECISE-HBR Score.

BACKGROUND: Among high-bleeding risk (HBR) patients undergoing coronary stenting, abbreviated dual antiplatelet therapy (DAPT) reduces bleeding without ischemic risk trade-off; whether these benefits persist across the entire spectrum of bleeding risk has not been investigated. OBJECTIVES: The aim of this study is to explore the value of the novel PRECISE-HBR score as a risk stratification tool to guide DAPT duration in patients at high bleeding risk. METHODS: The XIENCE Short DAPT program combined 3 international single-arm studies of HBR patients treated with cobalt-chromium everolimus-eluting stents who discontinued DAPT at 1 month (XIENCE 28 USA/Global) or 3 months (XIENCE 90), if event free and treatment adherent. Bleeding risk was classified as nonhigh (PRECISE-HBR score ≤22), high (score 23-26), or very high (score ≥27). Clinical outcomes were assessed between 1 and 12 months using propensity score stratification. RESULTS: Among 3,364 patients, the PRECISE-HBR score was ≤22, 23-26, and ≥27 in 359 (10.7%), 744 (22.1%), and 2,261 (67.2%), respectively. Rates of BARC (Bleeding Academic Research Consortium) type 3-5 bleeding (0.3%, 2.5%, 5.6%) and death or myocardial infarction (2.9%, 4.6%, 9.8%) increased progressively across risk categories. One- versus 3-month DAPT was associated with a significant reduction in BARC type 3-5 bleeding in patients with a score ≥27 (HR: 0.59, 95% CI: 0.39-0.88) but not in those <27 (HR: 2.31, 95% CI: 0.89-5.99; P-interaction = 0.012). Ischemic risk was similar between 1- and 3-month DAPT, irrespective of the PRECISE-HBR score (P-interaction = 0.40). CONCLUSIONS: The PRECISE-HBR score identified patients at increased risk for both bleeding and ischemic events who seemed to derive greater benefit from 1-month DAPT after stent implantation.

Hospital Volume and Failure to Rescue Post-TAVR: Insights From the STS/ACC TVT Registry.

BACKGROUND: There is an inverse volume-mortality relationship for transcatheter aortic valve replacement (TAVR), with higher adjusted mortality among hospitals with lower TAVR volumes. OBJECTIVES: The aim of this study was to identify potential mediators of the volume-mortality relationship including the risk of major complications occurring and/or failure to rescue (FTR) from these complications. METHODS: Using the Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy Registry, we identified patients who underwent TAVR from 2017 to 2023. The rate of FTR-defined as 30-day risk-adjusted mortality following a major complication post TAVR-was compared across hospitals stratified by quartiles (Q1-Q4) of annualized TAVR volume. RESULTS: A total of 487,159 patients (median age: 79 years, 57% male) who underwent TAVR across 808 sites were included. Lower-volume centers (Q1) had significantly higher rates of 30-day mortality (adjusted OR: 1.12; 95% CI: 1.00-1.25; P = 0.045) and major complications (adjusted OR: 1.19; 95% CI: 1.08-1.32; P = 0.0006) than higher-volume centers (Q4). The overall rate of FTR across all hospitals was 11.0%. There were no significant differences in FTR rates by hospital volume (adjusted OR: 0.97 per 100 cases; 95% CI: 0.93-1.01; P = 0.11) and no evidence of a threshold relationship. CONCLUSIONS: In this large contemporary study, we found that higher annualized TAVR volume was associated with lower complication rates but not with lower FTR rates. These findings suggest that the inverse relationship between hospital TAVR volume and post-TAVR mortality may be more strongly associated with complication rates than with FTR.

Procedural Strategies for Optimal Transcatheter Aortic Valve Replacement: An International Position Statement.

The extension of transcatheter aortic valve replacement (TAVR) to younger patients with longer life expectancy has driven a shift in focus toward procedural optimization, with the goals of maximal clinical improvement, durable outcomes, maintained coronary access, and avoidance of permanent pacemaker implantation. A TAVR CODE framework including 4 key fluoroscopic parameters-coaxiality, orientation, depth, and expansion-has recently been proposed to standardize the intraprocedural evaluation of optimal transcatheter heart valve (THV) implantation. Systematic implementation of these concepts during TAVR is expected to improve valve performance and durability. This is hypothesized to improve afterload reduction, enhance left ventricular reverse remodeling, and confer increased and longer lasting clinical benefits. To date, procedural strategies to optimize TAVR outcomes have been largely based upon expert opinion, supported predominantly by mechanistic and retrospective studies. Ongoing randomized trials are evaluating the effects of systematic pre- and postdilatation during TAVR, the impact of same-volume double-tap techniques with balloon-expandable valves, and the effectiveness of different commissural alignment techniques. Meanwhile, intravascular ultrasound is under investigation as a tool to evaluate THV expansion to guide postdilatation, while technical consistency may be improved by innovative THV designs that promote symmetrical expansion, better fluoroscopic visualization, and robotic insertion systems using artificial intelligence. In this article, we detail the possible impact of implementing the TAVR CODE framework on THV function, durability, and clinical outcomes, and provide an expert perspective on procedural strategies to achieve optimal index TAVR outcomes, including management frameworks and position statements according to contemporary best practices.

Impact of Coronary Microvascular Dysfunction on Patient-Reported Symptoms After PCI.

BACKGROUND: Coronary microvascular dysfunction (CMD) has been proposed as a mechanism underlying residual angina after percutaneous coronary intervention (PCI). OBJECTIVES: The objective of the study was to investigate the impact of CMD on symptoms in patients undergoing PCI. METHODS: Patients with hemodynamically significant coronary artery disease (CAD) (fractional flow reserve ≤0.80) were included. CAD was classified as focal or diffuse using the pull back pressure gradient (PPG) (diffuse CAD defined as PPG <0.62). CMD was defined as microvascular resistance reserve <3.0. The Seattle Angina Questionnaire (SAQ) was administered at baseline and 1 year. RESULTS: Among 201 patients (mean age 68.5 ± 10.1 years; 71% male), CMD was present in 75 (37.3%), with no difference between focal and diffuse CAD (41% vs 34%; P = 0.35). At baseline, CMD was associated with more severe symptoms without reaching statistical significance (SAQ summary score 64.0 ± 25.3 vs 69.6 ± 21.0; P = 0.09). At 1 year, symptoms were similar between groups (SAQ summary score 87.6 ± 16.0 vs 89.4 ± 16.4; P = 0.47). A significant interaction between PPG and microvascular resistance reserve was observed for residual angina (P for interaction = 0.015); patients with focal CAD and concomitant CMD had the highest burden of residual symptoms. CONCLUSIONS: CMD is present in approximately one-third of patients undergoing PCI and occurs with similar frequency in focal and diffuse CAD. CMD alone was not associated with residual angina. However, its clinical relevance varied according to the epicardial disease pattern: in focal CAD, concomitant CMD was associated with less symptomatic improvement after PCI, whereas in diffuse CAD, residual symptoms appeared to be driven predominantly by persistent epicardial disease.

Clarifying the Obesity Paradox in Transcatheter Aortic Valve Replacement: Findings From the STS/ACC TVT Registry.

BACKGROUND: Higher body mass index (BMI) has been associated with better outcomes after transcatheter aortic valve replacement (TAVR), but whether this "obesity paradox" varies by age is unclear. OBJECTIVES: The objective of the study was to determine whether age modifies the association between BMI and 1-year outcomes after TAVR. METHODS: The authors performed a retrospective analysis of the Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy Registry, including patients who underwent TAVR between January 2021 and February 2023. Patients were categorized by age (<65 or ≥65 years) and BMI (<25 or ≥25 kg/m2). The primary outcome was 1-year all-cause mortality. Secondary outcomes included major adverse cardiovascular and cerebrovascular events: stroke, cardiac mortality, myocardial infarction, and readmission. Inverse probability of treatment weighting regression models were used to assess outcomes. RESULTS: Among the 6,639 patients (mean age 76.7 ± 11.6 years; mean BMI 29.7 ± 9.9 kg/m2), 1-year all-cause mortality occurred in 427 (6.4%). Among patients <65 years, outcomes did not differ between BMI groups (P > 0.05). Among patients ≥65 years, BMI <25 kg/m2 was associated with a higher risk of all-cause mortality (adjusted HR [aHR]: 1.29; 95% CI: 1.05 to 1.57; P = 0.013) and major adverse cardiovascular and cerebrovascular events (aHR: 1.20; 95% CI: 1.08-1.34; P = 0.001) vs those with BMI ≥25 kg/m2. The association between higher BMI and lower mortality strengthened with advancing age and was significant in patients 75 to 84 years (aHR: 0.60; 95% CI: 0.44-0.82; P = 0.001) and ≥85 years (aHR: 0.36; 95% CI: 0.25-0.51; P < 0.001), but not in younger strata. CONCLUSIONS: Higher BMI was not uniformly protective. Among older adults, lower BMI was associated with a higher-risk phenotype and worse 1-year outcomes.

The RASE Technique for Extraction of a Protruding Aorto-Ostial Coronary Stent.

BACKGROUND: Significant protrusion of an aorto-ostial coronary stent into the aortic root may complicate transcatheter aortic valve replacement (TAVR) by increasing the risk of valve-stent interaction, TAVR balloon rupture, or stent deformation. Safe management strategies remain poorly defined. CASE SUMMARY: An 84-year-old man undergoing pre-TAVR evaluation was found to have ostial right coronary artery disease; this was treated with percutaneous coronary intervention, resulting in 7-mm stent protrusion into the aorta, precluding safe TAVR. After heart team evaluation, the patient underwent intentional stent fracture, reverse hairpin-assisted guidewire re-entry, and controlled snare-assisted extraction of the protruding stent (termed the RASE technique [reverse hairpin-assisted avulsion and stent extraction]). Successful staged TAVR was later performed. DISCUSSION: This case describes a novel guidewire-controlled technique for safe extraction of a protruding aorto-ostial stent, enabling definitive transcatheter valve therapy. TAKE-HOME MESSAGES: Aorto-ostial stent protrusion may preclude safe TAVR and requires multimodality assessment and heart team planning. The RASE technique may facilitate safe and controlled extraction of the protruding stent segment.

Simultaneous Transcatheter Aortic Valve Replacement and Percutaneous Coronary Intervention Under ECMO Support.

BACKGROUND: Patients with severe aortic stenosis (AS) often have concomitant coronary artery disease (CAD), but optimal timing of percutaneous coronary intervention (PCI) remains unclear, especially in those with very high risk. CASE SUMMARY: A 63-year-old man with severe AS (aortic valve area 0.9 cm2), reduced left ventricular ejection fraction (40%), and triple-vessel CAD including bilateral chronic total occlusions underwent a single-session transcatheter aortic valve replacement (TAVR) plus PCI under prophylactic veno-arterial extracorporeal membrane oxygenation because of extreme risk of hemodynamic collapse. TAVR was performed first, followed by rotational atherectomy-assisted PCI. DISCUSSION: Prophylactic veno-arterial extracorporeal membrane oxygenation provided a critical safety net, allowing valve recapture and repositioning despite heavy calcification and successful chronic total occlusion revascularization. This 1-stop strategy avoided staged procedures and cumulative cardiac stress. TAKE-HOME MESSAGE: For high-risk AS with complex CAD, a 1-stop TAVR-plus-PCI strategy under prophylactic ECMO support is feasible and potentially life-saving; careful imaging and advanced intraoperative techniques are essential.

Delayed Chimney Stent Fracture After Transcatheter Aortic Valve Replacement.

BACKGROUND: Chimney stenting represents an established coronary protection strategy during transcatheter aortic valve replacement (TAVR) in high-risk anatomical settings, although chimney stent fracture remains a rare complication. CASE SUMMARY: A 55-year-old woman with severe aortic stenosis underwent TAVR with a self-expanding valve and left main chimney stenting due to a low-lying left coronary artery (10.2 mm). One month postprocedure, she presented with recurrent chest pain and elevated troponin. Coronary angiography revealed delayed chimney stent fracture with compromised left main flow, requiring urgent balloon dilatation and restenting. At 1-year follow-up, left ventricular function was preserved. CONCLUSION: This case highlights delayed stent fracture as a rare but serious complication of chimney stenting following TAVR. Imaging surveillance is warranted in patients with postprocedural chest pain to avoid diagnostic oversight. TAKE-HOME MESSAGES: Delayed stent fracture following chimney stenting for coronary protection during TAVR may present weeks after an initially successful procedure with acute coronary syndrome-like symptoms, requiring urgent coronary angiography and reintervention. Continuous radial force from self-expanding transcatheter valve frames may contribute to chronic mechanical stress on chimney stents. Preoperative assessment of coronary ostial angulation should be considered in patients with high-risk coronary anatomy undergoing TAVR.

Extracorporeal Membrane Oxygenation for Transcarotid Transcatheter Aortic Valve Replacement in Severe Aortic Stenosis.

BACKGROUND: Patients with severe aortic stenosis and profoundly reduced left ventricular ejection fraction (LVEF) face a prohibitive risk of intraprocedural hemodynamic collapse during transcatheter aortic valve replacement (TAVR). This risk is exacerbated when complex valve anatomy prolongs the procedure, and it is compounded further when hostile iliofemoral anatomy precludes conventional transfemoral access. CASE SUMMARY: We present a 71-year-old woman with severe aortic stenosis, a rigid type 0 bicuspid aortic valve, and an LVEF of 15%. Preprocedural imaging revealed narrow iliofemoral arteries prohibitive for a standard TAVR delivery system. Guided by a multidisciplinary heart team approach focusing on the "access-valve-coronary-brain" axis, a tailored strategy was executed. Prophylactic venoarterial extracorporeal membrane oxygenation (ECMO) was established via the femoral vessels to provide continuous circulatory support, followed by successful TAVR via the left common carotid artery. The procedure was well tolerated, and the patient demonstrated rapid reverse ventricular remodeling, with LVEF improving to 48% at discharge. DISCUSSION: Integrating prophylactic ECMO with transcarotid access is a feasible procedural strategy to mitigate the risk of intraprocedural collapse in patients with severe left ventricular dysfunction, complex bicuspid aortic valve anatomy, and prohibitive femoral access.

TAVR Using a Premounted Dry Valve in a Patient With Severe Aortic Stenosis and Tortuous Descending Aorta.

BACKGROUND: Transcatheter aortic valve replacement (TAVR) with wet tissue valves have several limitations that compromise their durability and lifespan, and it is technically challenging in patients with a tortuous descending aorta. CASE SUMMARY: We report an 81-year-old woman with severe symptomatic aortic stenosis, characterized by a functionally bicuspid aortic valve with extensive calcification, horizontal heart configuration. and tortuous descending aorta. The patient underwent successful transfemoral TAVR using a premounted dry valve system with cerebral embolic protection and a minimalist approach. DISCUSSION: This case confirms the feasibility of long sheath-assisted TAVR using a premounted dry valve system. Given the availability of premounted dry valves in China, the use of a premounted dry valve with potentially enhanced durability was chosen to avoid the risk of reintervention in this elderly patient. TAKE-HOME MESSAGE: Successful TAVR using a premounted dry valve system in patients with complex anatomy requires meticulous preprocedural planning, advanced imaging analysis, and appropriate device selection.

Transcatheter Management of Severe Aortic Stenosis, Acute Pulmonary Embolism, and Gastrointestinal Bleeding.

BACKGROUND: The concurrent presentation of severe aortic stenosis (AS), acute pulmonary embolism (PE), and gastrointestinal bleeding creates a clinical dilemma where treating one condition may exacerbate another. CASE SUMMARY: A 72-year-old woman presented with fatigue, palpitations, and melena. She was found to have severe AS, bilateral acute PE, and a bleeding duodenal ulcer. After initial stabilization with transfusion, we used a staged multidisciplinary approach: catheter-directed thrombectomy with adjunctive balloon angioplasty for residual stenosis, followed by transfemoral transcatheter aortic valve replacement. DISCUSSION: This case illustrates the challenges of coexisting AS, gastrointestinal bleeding, and PE. Although Heyde syndrome was considered a possible unifying mechanism, absent angiodysplasia and von Willebrand factor testing preclude definitive diagnosis. A staged, physiology-driven strategy prioritized immediate threats and enabled safe definitive therapy. TAKE-HOME MESSAGES: In patients with competing thrombotic and bleeding pathologies, a staged, physiology-first approach prioritizing the most immediate threat enables safe sequential intervention. Percutaneous techniques minimize cumulative risk in high-risk patients.

Commissural Alignment During TAVR With a New-Generation Self-Expandable Valve in a Single Coronary Artery.

BACKGROUND: Transcatheter aortic valve replacement (TAVR) in patients with a single coronary artery (SCA) is challenging because loss of coronary access may have catastrophic consequences. CASE SUMMARY: A 92-year-old woman with severe aortic stenosis underwent transfemoral TAVR. Preprocedural computed tomography revealed an SCA arising from the left coronary cusp with a small annulus. TAVR was performed using an Evolut FX+ valve with intentional commissural alignment guided by cusp-overlap and en face fluoroscopic views. Postprocedural imaging demonstrated preserved coronary access and flow, with a large stent-frame cell facing the coronary ostium. The patient recovered uneventfully. DISCUSSION: Intentional commissural alignment with imaging-guided deployment may preserve coronary access without coronary protection in patients with complex coronary anatomy. TAKE-HOME MESSAGE: Intentional commissural alignment may facilitate safe TAVR while preserving coronary access in patients with SCA.

Balloon Sizing-Guided Valve Selection for Transcatheter Aortic Valve Replacement in Bicuspid Aortic Valve.

Valve size selection for transcatheter aortic valve replacement using a balloon-expandable valve in a bicuspid aortic valve (BAV) involves a trade-off among the risks of aortic rupture, residual paravalvular leak, and inadequate valve expansion. We report 2 cases of type 1 BAVs with a tapered configuration that created challenges regarding valve size selection. Two consecutive valve sizes were considered based on multidetector computed tomography measurements. Therefore, predilatation with contrast injection was performed using a balloon that was slightly smaller than the smaller of the 2 valve sizes. These cases suggest that a smaller valve should be selected when balloon indentation is observed without contrast backflow into the left ventricle because selecting the larger valve may result in insufficient expansion. Balloon predilatation with contrast injection may be a useful strategy for determining the appropriate valve size for transcatheter aortic valve replacement using a balloon-expandable valve in type 1 BAVs with a tapered configuration.

Applied Anatomy of Perimembranous Ventricular Septal Defect for Transcatheter Device Closure.

Perimembranous ventricular septal defect is a common congenital heart disease effectively treated by transcatheter device closure with high success rates and minimal complications. This review categorizes perimembranous ventricular septal defects into 7 morphologic variants based on anatomical extension and correlates these with echocardiographic classifications: type 1 is central perimembranous; type 2 is superior-anterior extension; type 3 is superior-posterior extension; type 4 is inferior-anterior extension; type 5 is inferior-posterior extension; type 6 is confluent extensions with more than one extension direction; and type 7 is complex type with outlet septum involvement. Type 2 defects are often associated with aortic valve prolapse and regurgitation, requiring soft, flexible devices to minimize valve injury. Type 5 defects lie close to the conduction system; deploying devices within an aneurysmal pouch helps prevent heart block and tricuspid regurgitation. Type 6 and 7 defects sometimes necessitate multiple devices for complete closure. Understanding these anatomical variants aids in selecting appropriate devices and optimizing procedural outcomes.

The Narrow QRS Deception: Alternating Bundle Branch Block Uncovered on Ambulatory Monitoring After TAVR.

BACKGROUND: Conduction disturbances are common after transcatheter aortic valve replacement (TAVR), whereas alternating bundle branch block reflects advanced conduction system disease. CASE SUMMARY: A 76-year-old man underwent TAVR with an initially normal postprocedural electrocardiogram (ECG). Six days later, he presented with syncope. The admission ECG demonstrated wide QRS complexes. A retrospective review of early 12-lead Holter monitoring revealed alternating bundle branch block. Conduction system pacing was performed. DISCUSSION: This case illustrates how dynamic conduction instability after TAVR may remain undetected on a resting ECG and require extended rhythm assessment for early recognition. TAKE-HOME MESSAGES: Extended rhythm surveillance after TAVR can detect transient or intermittent conduction abnormalities not apparent on a standard ECG. Early identification of such changes may enable timely electrophysiological evaluation and appropriate device therapy.

Precision Management of High-Risk Coronary Obstruction During TAVR Using a Physiology-Guided Strategy.

BACKGROUND: Coronary artery obstruction (CAO) is a rare but devastating complication of transcatheter aortic valve replacement (TAVR). Prophylactic chimney stenting is a bailout strategy but carries long-term risks. CASE SUMMARY: A 72-year-old female with severe aortic stenosis and high-risk CAO anatomy (low left coronary ostium height of 9.1 mm, redundant calcified leaflet) underwent TAVR. Post-deployment angiography showed ambiguous left coronary leaflet displacement with delayed contrast clearance. However, immediate and dynamic fractional flow reserve (FFR) assessments consistently remained above the ischemic threshold (>0.80) despite aggressive balloon post-dilations. Consequently, chimney stenting was safely deferred. The patient was asymptomatic at the 3-month follow-up. DISCUSSION: Relying solely on anatomical predictors may lead to overtreatment. Physiological assessment using FFR effectively defines the functional significance of anatomical proximity, safely avoiding unnecessary permanent implants. TAKE HOME MESSAGES: Dynamic FFR monitoring differentiates anatomical proximity from true functional ischemia during TAVR, safely guiding the avoidance of unnecessary chimney stenting.

A Combined Strategy for TAVR in High-Risk Anatomy: Small Ventricle and Low Coronary Ostia.

BACKGROUNDS: Transcatheter Aortic Valve Replacement (TAVR) in patients with a critically small left ventricle (LV) carries risks of hemodynamic collapse ("suicide LV") and coronary occlusion. CASE SUMMARY: A 73-year-old woman with severe aortic stenosis, marked LV hypertrophy, and a tiny LV cavity (LVEDD 29.3mm) faced imminent bilateral coronary occlusion due to low ostia and small sinuses. We employed aggressive volume loading to maintain preload and a prophylactic bilateral chimney stenting strategy. A 23-mm self-expanding bioprosthesis was successfully implanted with the chimney stents preserving coronary perfusion. Post-procedural echocardiography showed excellent valve function with minimal paravalvular leak, and the patient recovered without complications. DISCUSSION: This case underscores the necessity of managing both intraventricular space constraints and extreme coronary risks simultaneously. The double-chimney approach provided robust protection where anatomical reserves were absent. TAKE-HOME MESSAGE: For TAVR candidates with a critically small LV and high-risk coronary anatomy, a unified protocol combining volume optimization and prophylactic bilateral chimney stenting ensures procedural safety and success.

Hemodynamic Improvement With the Double-Tap Technique During Transcatheter Aortic Valve Replacement Using a Pressure-Sensing Guidewire.

Postdilatation using the original delivery system balloon at the same filling volume (the double-tap technique) has been proposed to improve balloon-expandable transcatheter heart valve (THV) expansion during transcatheter aortic valve replacement (TAVR); however, its immediate hemodynamic impact remains unclear. Here, we report a case series of 6 consecutive patients who underwent TAVR with balloon-expandable valves in whom the double-tap technique was performed with hemodynamic assessment using a pressure-sensing guidewire. The mean transvalvular pressure gradients and midportion THV diameters were evaluated before and after the double-tap technique. This technique was significantly associated with reduced mean transvalvular pressure gradients (median difference: -6.5 mm Hg; P = 0.036) and increased midportion THV diameter (median difference: 0.8 mm; P = 0.036), whereas paravalvular leak was reduced to trivial or none in all patients, and no cardiovascular death, stroke, or permanent pacemaker implantation occurred at 30 days. The double-tap technique under pressure-sensing guidewire guidance may facilitate safer valve optimization during TAVR.

Trilogy Transcatheter Aortic Valve Implantation for Freestyle Graft With Flail Left Coronary Cusp.

CASE SUMMARY: This clinical vignette describes successful transcatheter aortic valve implantation (TAVI) in a Freestyle graft with a flail left coronary cusp using a 27-mm Trilogy valve (JenaValve Technology). Using a Trilogy valve in cases with a flail cusp raises concerns of insufficient valve sealing and stability; our report demonstrates the feasibility and safety of the procedure with excellent procedural outcomes. TAKE-HOME MESSAGES: TAVI using the Trilogy valve for degenerated Freestyle graft with flail left coronary cusp is feasible, with several advantages over commercially available TAVI platforms. However, additional cases are required to demonstrate its safety and reproducibility.

Transcatheter Aortic Valve Implantation in a Massive Aortic Annulus With a Novel Balloon-Expandable Valve.

CASE SUMMARY: This clinical vignette describes successful transcatheter aortic valve implantation (TAVI) in the largest reported annulus (1,040 mm2) using a novel 35-mm balloon-expandable valve. TAVI can be performed off-label in selected patients with a massive aortic annulus using commercially available 29-mm transcatheter aortic valves by adding additional volume; however, this risks paravalvular leak, valve embolism, and damage to bioprosthetic leaflets. TAKE-HOME MESSAGE: TAVI is feasible in patients with a massive aortic annulus measuring >1,000 mm2 using Myval 35-mm balloon-expandable valve with balloon overfilling.

Stroke Risk After TAVR: Balloon-Expandable vs Self-Expanding Valves in Community Practice.

BACKGROUND: Stroke is a serious complication after transcatheter aortic valve replacement (TAVR), yet contemporary data from community hospital practice are limited. OBJECTIVES: The purpose of this study was to evaluate the association between valve type and the risk of stroke within 1 year after contemporary TAVR in community practice. METHODS: We analyzed patients who underwent TAVR across CommonSpirit Health hospitals from January 2021 to February 2023 using data from the Society of Thoracic Surgeons (STS)/American College of Cardiology Transcatheter Valve Therapy Registry. Valve type was categorized as balloon-expandable valves or self-expanding valves (SEV). The primary outcome was stroke within 1 year. Kaplan-Meier methods were used to compare stroke-free survival between valve types. Baseline differences were adjusted using inverse probability of treatment weighting. Independent predictors of stroke were identified using weighted time-to-event models. RESULTS: A total of 6,663 patients underwent TAVR during the study period; 5,445 (81.7%) received balloon-expandable valve, and 1,218 (18.3%) received SEV. More females received a SEV (56.7% vs 37.5%; P < 0.001). The STS risk score (4.5 ± 3.8 vs 4.0 ± 3.5; P < 0.001) was higher in the SEV group. A total of 87 (1.3%) patients experienced stroke within the study period. The primary endpoint of stroke-free survival at 1 year was not different between valve types (log-rank P = 0.448). After inverse probability of treatment weighting adjustment, valve type was not associated with stroke (adjusted HR: 1.54; 95% CI: 0.79-2.68; P = 0.294). Age, lower body mass index, prior stroke, STS risk, and alternative access were associated with stroke. CONCLUSIONS: In this registry of patients receiving TAVR, valve type did not predict stroke at 1 year. The predominant drivers of stroke were clinical variables: age, STS risk, and a history of stroke.

Two-Staged Transcatheter Aortic Valve Replacement in Severely Calcified Sinotubular Junction.

OBJECTIVE: Severe sinotubular junction (STJ) calcification presents important challenges during transcatheter aortic valve implantation, including risk of aortic dissection or aortic root rupture and valve malposition. We describe a straightforward and reproducible two-stage balloon inflation technique with a balloon-expandable SAPIEN 3 valve to optimize precision and procedural safety in this difficult setting. TECHNIQUE: Step 1: Initial balloon inflation at 2 mL less than nominal volume to secure annular anchoring and limit radial force on the calcified STJ. Step 2: Balloon advanced 1-2 mm under fluoroscopy toward the inflow and inflated to the full nominal volume, completing valve deployment. PITFALLS: Inadequate anchoring may cause migration or embolization, underestimation of calcification can compromise expansion, and balloon overinflation may cause root injury. CONCLUSION: This staged inflation method anchors the valve, minimizes STJ stress, and provides a simple, reproducible strategy that may improve safety in anatomically complex patients.

Gender Matters: A State-of-the-Art Review of Transcatheter Structural Interventions in Older Women Vs Men.

With rising life expectancy, the population of older adults over the age of 65 is rapidly expanding, with women comprising the majority. Structural heart disease is common in this group, and transcatheter interventions have transformed its management. Optimal outcomes require careful consideration of sex-specific differences. This review examines transcatheter structural heart interventions in older adults with a focus on sex-based outcomes, procedural planning, and current knowledge gaps.

[World Report] The medicine of…cruise ships

Although the hantavirus outbreak on MV Hondius has drawn the world's attention, day-to-day practice is usually a little more prosaic. Talha Burki embarks on an examination of cruise ships.

[Comment] Offline: Hantavirus—surprise, complacency, and peril

Memories resurface. An unfamiliar virus. Deaths. A stricken cruise ship. Quarantines. Hastily arranged WHO press briefings. Scientists interviewed on radio and television about what is known—and, more importantly, not known—about disease transmission. WHO has assessed the public health risk as low. But for the families of the three passengers on the MV Hondius who died, together with those with either confirmed or suspected hantavirus infection, the news of an outbreak of a mysterious virus will be frightening.

Deferral of percutaneous coronary intervention in patients undergoing transcatheter aortic valve implantation (PRO-TAVI): an investigator-initiated, multicentre, open-label, non-inferiority, randomised controlled trial.

BACKGROUND: Coronary artery disease is common in patients undergoing transcatheter aortic valve implantation (TAVI). We aimed to assess whether deferral of percutaneous coronary intervention (PCI) is non-inferior to routine PCI before TAVI in patients with coronary artery disease. METHODS: In this investigator-initiated, open-label, randomised controlled trial, done at 12 hospitals in the Netherlands, TAVI patients with coronary artery disease were randomly assigned in a 1:1 ratio to deferral of PCI or PCI before TAVI. Randomisation was done by use of a web-based system with random block sizes of 2 and 4, and stratification by presence of coronary artery disease involving proximal left anterior descending artery. The primary endpoint was a composite of all-cause mortality, myocardial infarction, stroke, and major bleeding at 1 year. Non-inferiority testing was done in the intention-to-treat population against the prespecified margin of 11 percentage points. The study is registered with ClinicalTrials.gov (NCT05078619) and long-term follow-up is ongoing. FINDINGS: Between Oct 7, 2021, and Nov 19, 2024, 466 patients were enrolled: 233 were assigned to deferral of PCI and 233 to PCI before TAVI. Median age was 81 years (IQR 78-84), and 166 (36%) of 466 patients were female. The primary endpoint occurred in 56 (24%) of 233 patients in the deferral group as compared with 60 (26%) of 233 patients in the PCI group (rate difference -1·7% [95% CI -9·5 to 6·2]; hazard ratio 0·89 [95% CI 0·62-1·28]; p=0·0008 for non-inferiority; p=0·68 for superiority). INTERPRETATION: In patients with coronary artery disease undergoing TAVI, deferral of PCI was non-inferior to PCI before TAVI for the 1-year composite of all-cause mortality, myocardial infarction, stroke, and major bleeding. These findings suggest that an initial conservative strategy can be appropriate in selected patients, although patient-tailored treatment decisions remain essential. FUNDING: ZonMw.

Wearable-Echo-FM: an ECG echo foundation model for 1-lead electrocardiography.

AIMS: Artificial intelligence (AI) models can now detect patterns of structural heart diseases (SHDs) from electrocardiograms (ECGs), though scaling them requires the broader use of 1-lead ECGs that are now ubiquitous in wearable and portable devices. However, model development for these devices is limited by a lack of diagnostic labels for SHDs for wearable ECGs. METHODS AND RESULTS: Here, we present Wearable-Echo-FM, a foundation model that encodes 1-lead ECGs with information from echocardiographic text reports. Using 194 551 1-lead ECG-echo pairs from 77 378 adults (2015-2018), we contrastively pre-trained ECG convolutional neural network (CNN) and RoBERTa text encoders. The ECG encoder was fine-tuned on a distinct progressively larger ECG set (250 to 250 260 ECGs) to detect different cardiac disorders: (i) left-ventricular systolic dysfunction (LVSD), (ii) diastolic dysfunction, and (iii) a composite SHD. This was compared with a randomly initialized CNN, with both approaches evaluated in an independent held-out test set. With the full training set, Wearable-Echo-FM matched the baseline CNN (AUROC 0.894 vs. 0.884 for LVSD; 0.849 vs. 0.843 diastolic dysfunction; 0.887 vs. 0.869 composite). With only 0.5% (∼1000 ECGs) of data, it markedly outperformed baseline (0.855 vs. 0.548; 0.819 vs. 0.582; 0.863 vs. 0.496, respectively). CONCLUSION: Contrastive pre-training of 1-lead ECGs on echocardiographic text reduces label requirements for label-efficient development of SHD screening models on 1-lead ECGs, providing a foundation for future validation on wearable and portable devices.

Structural heart disease screening using artificial intelligence-enabled electrocardiogram and novice handheld cardiac ultrasound: a cost analysis.

AIMS: Early detection of structural heart disease (SHD) improves patient outcomes. However, population-based screening is not recommended due to the lack of accurate and cost-effective tools. We evaluated the costs of artificial intelligence-enabled electrocardiogram (AI-ECG) alone vs. AI-ECG followed by handheld cardiac ultrasound (HCU) for SHD screening. METHODS AND RESULTS: We performed a model-based cost analysis using data from 286 adult patients who underwent ECG and same-day HCU performed by a novice operator. Transthoracic echocardiogram (TTE) was the reference standard. We compared two screening strategies: (i) AI-ECG alone and (ii) a stepwise approach (AI-ECG followed by HCU). We assessed costs per diagnosis of aortic stenosis (AS), increased left ventricular wall thickness (ILVWT), and left ventricular systolic dysfunction (LVSD). Sensitivity analyses were conducted for varying disease prevalence. The stepwise approach decreased the cost per diagnosis of AS from $6386 (AI-ECG alone) to $2746 (57.0% savings), ILVWT from $4448 to $2895 (34.9% savings), and LVSD from $1469 to $1296 (11.8% savings). Overall, the cost per diagnosis for all SHDs combined decreased from $1940 to $1570 (19.1% savings). Sensitivity analysis demonstrated that cost savings were inversely proportional to disease prevalence. Nevertheless, stepwise screening remained cost-saving compared with AI-ECG alone until prevalence exceeded ∼55.9% for AS, 28.9% for ILVWT, 20.7% for LVSD, and 40.8% for all SHDs combined. CONCLUSION: A stepwise screening strategy incorporating HCU after a positive AI-ECG reduces the immediate costs of SHD detection by minimizing unnecessary TTEs. This approach may enhance the feasibility of population-based SHD screening, particularly in lower-prevalence settings.

Impact of cardiac amyloidosis on survival in aortic stenosis patients undergoing TAVR: a systematic review and reconstructed time-to-event meta-analysis.

BACKGROUND: New evidence suggests a relatively high prevalence of occult cardiac amyloidosis (CA) among patients with aortic stenosis (AS). While transcatheter aortic valve replacement (TAVR) is an established treatment for AS, the impact of concomitant CA on long-term outcomes remains unclear. We conducted a systematic review and meta-analysis to evaluate survival and procedural outcomes of TAVR in AS patients with and without CA. METHODS: PubMed, Scopus, Web of Science, Google Scholar, and the Cochrane Library were searched through 21 April 2026. Studies comparing outcomes of TAVR in patients with and without CA and reporting Kaplan-Meier survival curves were included. Individual patient survival data were extracted from Kaplan-Meier curves and reconstructed for pooled analysis. Secondary outcomes were analyzed using random-effects meta-analysis. RESULTS: Seven studies including 2747 patients were analyzed. In the primary analysis, which included both definitive and probability-based definitions of CA, CA was associated with increased all-cause mortality following TAVR (HR: 1.58; 95% CI 1.23, 2.03; P < 0.001). However, in a sensitivity analysis restricted to studies with confirmed CA, this association was no longer significant (HR: 1.32, 95% CI 0.84, 2.07, P = 0.226). There were no significant differences in pacemaker implantation (OR: 1.33; 95% CI 0.69, 2.56; P = 0.40) or more than mild aortic regurgitation (OR: 0.96; 95% CI 0.25, 3.78; P = 0.96). CONCLUSION: The association between CA mortality after TAVR in AS patients is highly dependent on how CA is defined. While analyses including screening-based cohorts suggest increased risk, this was not observed in analyses of studies with confirmed CA. These findings highlight the impact of differing diagnostic approaches in CA and underscore the need for future studies to use standardized criteria and prospective designs to clarify the independent prognostic role of confirmed CA.

Transcatheter ventricular septal defect closure in children: ten-year experience with multiple devices and long-term outcomes.

BACKGROUND: Transcatheter closure has become a widely accepted alternative to surgery for VSD, but long-term pediatric data are limited. This study evaluated procedural success, complications, and long-term outcomes with different occluders. METHODS: We retrospectively analyzed 118 children who underwent attempted transcatheter VSD closure between 2014 and 2024, with clinical, echocardiographic, and electrocardiographic follow-up. RESULTS: Closure was successful in 110 patients (93%). Failures were due to multifenestrated anatomy, embolization, residual shunt, atrioventricular (AV) block, tricuspid regurgitation, or insufficient aortic rim. Major complications occurred in six patients, including device embolization, progressive aortic regurgitation requiring surgery, persistent nodal rhythm requiring device removal, ventricular perforation, infective endocarditis, and subarachnoid hemorrhage. Minor complications included mild to moderate tricuspid regurgitation (n = 4) and mild aortic regurgitation (n = 5). Arrhythmic events comprised supraventricular tachycardia (n = 2, both resolved), nodal rhythm (n = 1, transient), right bundle branch block (n = 5, persistent in four), and left bundle branch block (n = 1, resolved). Residual shunt was present in 36.4% immediately, declining to 9.8% at follow-up. Larger VSD diameter (OR 1.75, 95% CI 1.14-2.69) and higher body weight (OR 1.07, 95% CI 1.00-1.15) were independent predictors. No late complete AV block, endocarditis, or embolization occurred. Patients treated with Konar-MF were younger and lighter, while Nit-Occlud was associated with higher residual shunt rates (85.7% vs. 33.0%, p = 0.010). CONCLUSION: Transcatheter VSD closure in children demonstrated high success, acceptable complication rates, and favorable long-term outcomes. Results were influenced by device choice, defect size, and patient characteristics, highlighting the need for individualized strategies and continued surveillance.

Stable valve function after post-transapical TAVR with anchoring strut fracture: a 3-year multimodal imaging follow-up case report.

BACKGROUND: Transcatheter aortic valve replacement (TAVR) for native aortic regurgitation (AR) remains technically challenging due to the absence of annular calcification and difficulties in achieving stable anchoring. Mechanical complications such as anchoring strut fracture are rare but may have implications for long-term valve durability. CASE SUMMARY: A 64-year-old man with severe symptomatic native AR underwent transapical TAVR using a 29-mm self-expanding J-Valve system. Routine echocardiography and gated CT on postoperative day 7 identified an isolated fracture of the right coronary sinus anchoring strut without migration, leaflet dysfunction, or haemodynamic compromise. No balloon post-dilatation was performed. Serial multimodal imaging over nearly 3 years demonstrated persistent structural stability, preserved valve function, and marked left-ventricular reverse remodelling. DISCUSSION: This case provides long-term multimodal imaging follow-up of isolated anchoring strut fracture after TAVR for native AR. Early fracture detection and absence of calcification support a deployment-related stress mechanism rather than late cyclic fatigue. Although this favourable evolution suggests that isolated fracture does not necessarily result in immediate structural valve dysfunction, prognostic conclusions cannot be generalized. Careful, individualized imaging surveillance remains essential.

Electrical storm treated with radiation therapy in a patient with ischaemic cardiomyopathy and left ventricular thrombus: a case report.

BACKGROUND: Electrical storm in patients with structural heart disease is associated with high morbidity and mortality. Catheter ablation is recommended for drug-refractory ventricular tachycardia (VT), but may be contraindicated in the presence of a left ventricular (LV) thrombus due to increased thromboembolic risk. Stereotactic arrhythmia radiotherapy (STAR) has emerged as a non-invasive treatment option for refractory VT. This case highlights the potential role of STAR as a rescue therapy when conventional approaches are not feasible. CASE SUMMARY: An 80-year-old man with advanced ischaemic cardiomyopathy presented after out-of-hospital cardiac arrest due to monomorphic VT. Evaluation revealed severe LV dysfunction (LVEF 15%), an anteroapical LV aneurysm and a newly detected LV thrombus. Catheter ablation was deferred due to embolic risk. Eleven weeks later, the patient was admitted with recurrent VT and developed electrical storm refractory to antiarrhythmic drug therapy, overdrive pacing, and bilateral stellate ganglion blockade. Non-invasive target delineation using contrast-enhanced cardiac computed tomography with scar characterization and ECG-based localization was performed. A single fraction of 25 Gy stereotactic arrhythmia radiotherapy was delivered to the suspected VT substrate. Electrical storm terminated immediately after treatment, and no further VT episodes occurred during hospitalization or during 6 months of follow-up. DISCUSSION: This case demonstrates that stereotactic arrhythmia radiotherapy may provide an effective non-invasive rescue strategy for electrical storm when catheter ablation is contraindicated. Integration of advanced cardiac imaging with ECG-based localization enables target definition in the absence of invasive electroanatomical mapping.

A diagnostic pitfall of CT calcium scoring in paradoxical low-flow, low-gradient severe aortic stenosis with rheumatic morphology: a case report.

BACKGROUND: Computed tomography (CT) calcium scoring is used to adjudicate paradoxical low-flow, low-gradient (LFLG) severe aortic stenosis (AS). However, its reliability may be limited in rheumatic disease. CASE SUMMARY: An 82-year-old woman with prior mitral valve replacement for rheumatic mitral stenosis was referred for AS. Transthoracic echocardiography revealed an aortic valve area (AVA) of 0.50 cm2, mean pressure gradient of 27 mmHg, stroke volume index of 30 mL/m2, and preserved systolic function, suggesting paradoxical LFLG severe AS. The CT calcium score was 889 Agatston units, below the female threshold for severe AS. Three-dimensional transoesophageal echocardiography (TEE) demonstrated commissural fusion, leaflet tip thickening, and planimetry-derived AVA of 0.69 cm2, confirming severe AS. The patient underwent transcatheter aortic valve implantation, with 6-min walk distance improving from 150 to 254 m. DISCUSSION: In rheumatic morphology, low CT calcium burden may not exclude severe AS because obstruction may be driven by commissural fusion and fibrosis rather than bulky calcification. Three-dimensional TEE planimetry can serve as an anatomy-based adjudicator when echocardiographic and CT calcium findings are discordant.

Fulminant prosthetic valve endocarditis after transcatheter aortic valve implantation caused by non-typeable

BACKGROUND: Infective endocarditis (IE) after transcatheter aortic valve implantation (TAVI) is an uncommon but life-threatening complication, often associated with diagnostic challenges. Streptococcus agalactiae (GBS) is increasingly recognized as a cause of invasive infection in older adults and may exhibit a rapidly progressive clinical course with central nervous system involvement. CASE SUMMARY: An 85-year-old woman with a history of TAVI presented with acute-onset fever and was diagnosed with GBS bacteraemia. Initial transthoracic echocardiography (TTE) showed no vegetations. On hospital Day 3, she developed delirium and neck stiffness suggestive of meningitis, with intracranial haemorrhage on computed tomography. Repeat TTE demonstrated newly developed vegetations on the prosthetic aortic valve and anterior mitral leaflet, with worsening mitral regurgitation, leading to a diagnosis of IE. The causative organism was identified as non-typeable GBS. Despite intensive antimicrobial therapy, her condition rapidly deteriorated with shock and multiorgan failure, and she died on hospital Day 7. DISCUSSION: This case highlights the fulminant nature of invasive GBS infection in elderly patients, particularly when associated with prosthetic valve IE after TAVI. Notably, this case was characterized by multivalvular involvement and possible central nervous system involvement. These features may reflect a severe disease phenotype driven by highly invasive bacteraemia and structural vulnerability related to the transcatheter valve system. Initial echocardiographic findings may be inconclusive, necessitating repeated evaluation. In addition to embolic complications, central nervous system involvement should be considered in cases of neurological deterioration. Early recognition is critical; however, prognosis remains poor once severe complications develop.

Transfemoral transcatheter aortic valve replacement in a patient with a history of artificial aortic arch replacement and stent implantation: a case report and strategies for a super-stiff approach.

BACKGROUND: Transfemoral transcatheter aortic valve replacement (TAVR) is challenging in patients with stiff and tortuous anatomy. In the present case, we presented a patient with super-stiff aortic arch (prior history of aortic arch replacement, stent implantation, and anastomotic fistula plugging) and a summary of strategies for managing such stiff approach. CASE SUMMARY: A 59-year-old man with symptomatic severe aortic stenosis and a super-stiff aortic arch underwent transfemoral TAVR. Techniques including buddy wire, balloon deflection, balloon-assisted tracking, snare assistance, and long sheath use were considered. Balloon-assisted tracking combined with a long sheath ultimately enabled successful TAVR. Supra-annular anchoring was also confirmed in this case. DISCUSSION: For patients with extremely stiff anatomy, multiple techniques may facilitate successful transfemoral TAVR. Furthermore, in bicuspid aortic valve cases, the narrowed supra-annular region can serve as an effective anchoring zone.

Diagnostic challenge of mitral regurgitation caused by concomitant coronary obstruction and dynamic left ventricular outflow tract obstruction after transcatheter aortic valve replacement: a case report.

BACKGROUND: Transcatheter aortic valve replacement (TAVR) is an established therapy for severe aortic stenosis (AS), but rare complications can rapidly become life-threatening, particularly in anatomically high-risk patients. CASE SUMMARY: A 94-year-old woman with very severe AS underwent transfemoral TAVR using a self-expanding valve. After transcatheter heart valve implantation, she developed haemodynamic collapse with right coronary artery obstruction and severe mitral regurgitation (MR). At that time, the aetiology of the severe MR could not be clearly identified. Although intra-aortic balloon pump (IABP) was initiated, cardiac arrest occurred, requiring extracorporeal membrane oxygenation (ECMO). Percutaneous coronary intervention was unsuccessful, necessitating conversion to coronary artery bypass grafting. ECMO was discontinued on postoperative Day 1, but recurrent haemodynamic collapse developed under IABP support, revealing left ventricular outflow tract obstruction (LVOTO) and severe MR with systolic anterior motion (SAM). Discontinuing IABP and initiating medical therapy rapidly stabilized haemodynamics. DISCUSSION: This case illustrates the diagnostic and haemodynamic complexity of simultaneous coronary artery obstruction and dynamic LVOTO with SAM-associated MR after TAVR. Because management strategies for these conditions are inherently contradictory, identifying the dominant mechanism of shock can be challenging. Although severe MR was initially attributed to ischaemia secondary to coronary obstruction, retrospective echocardiographic review demonstrated early SAM. Subsequent changes in loading conditions and myocardial contractility unmasked LVOTO. This case emphasizes the importance of repeated echocardiographic assessment and stepwise haemodynamic reassessment when multiple mechanisms of instability coexist after TAVR.

Smarter FoCUS: AI-guided focused cardiac ultrasound enables novice detection of left ventricular dysfunction.

AIMS: Heart failure is prevalent; however, there is no cost-effective screening option. Against formal echocardiography, we assessed the diagnostic performance of focused cardiac ultrasound (FoCUS), performed by novice users guided and interpreted by artificial intelligence (AI) for the assessment of left ventricular ejection fraction (LVEF). METHODS AND RESULTS: We prospectively enrolled 496 adults referred for diagnostic echocardiography. Novice operators (without clinical or imaging experience) underwent a 4-h imaging workshop, then performed FoCUS using a point-of-care device (Philips Lumify) utilizing real-time AI-image guidance (UltraSight). Images were assessed by AI-image interpretation software (Mayo Clinic), and two expert blinded echocardiologists. Median age was 67, 39% female, and body mass index range 17-56 kg/m2. Forty-one subjects (8.3%) exhibited moderate or greater LV dilatation and 28 (5.6%) had LVEF <40%. The median scan time was 4 min (IQR 3-5). Adequate views were achieved in 95.0% and 97.4% of subjects for AI interpretation and expert analysis, respectively. A two-step diagnostic screening process for low EF in which only abnormal AI reads or uninterpretable scans were reviewed by experts (15.1%) had a sensitivity 96.2%, specificity 95.4%, PPV 54.3%, and NPV 99.8%. A subsequent prospective validation study of 344 subjects demonstrated similar results (sensitivity 100%, specificity 99.4%). CONCLUSION: In this early feasibility investigation, AI-guidance technology embedded on a handheld device, enabled novice users without clinical or imaging experience to acquire sufficient quality images to accurately assess LVEF with minimal training. The technology evaluated in this study may hold promise for AI-guidance and interpretation to facilitate low-cost screening for cardiac dysfunction.

Bailout transcatheter edge-to-edge mitral valve repair for acute mitral regurgitation attributable to systolic anterior motion during transcatheter aortic valve implantation: a case report.

BACKGROUND: Systolic anterior motion (SAM) of the mitral valve is a rare but life-threatening complication of transcatheter aortic valve implantation (TAVI) that can cause acute severe mitral regurgitation (MR) and/or left ventricular outflow tract (LVOT) obstruction, leading to rapid haemodynamic deterioration. Evidence supporting the use of transcatheter edge-to-edge mitral valve repair (M-TEER) for SAM-related MR during TAVI, particularly in the absence of significant LVOT obstruction, is limited. CASE SUMMARY: A 78-year-old woman with severe symptomatic aortic stenosis and multiple comorbidities underwent transfemoral TAVI. Immediately after predilatation, she experienced haemodynamic collapse and required percutaneous cardiopulmonary support. Transoesophageal echocardiography revealed SAM of the anterior mitral leaflet with severe MR without apparent LVOT obstruction. Although a transcatheter aortic valve was subsequently implanted, severe MR with haemodynamic instability persisted. As medical management did not stabilize haemodynamics, bailout M-TEER was performed 3 days after TAVI. Thereafter, MR improved from severe to mild and haemodynamic stabilization rapidly occurred. The patient was discharged with New York Heart Association class I and remained asymptomatic. Sustained MR improvement was observed during 6-month follow-up. DISCUSSION: In this case, SAM-related MR without apparent LVOT obstruction developed immediately after predilatation in a patient with a sigmoid septum, and off-label M-TEER achieved haemodynamic stabilization. Although evidence supporting M-TEER for SAM-related MR during TAVI is limited to case reports and small case series, this case suggests that M-TEER may be considered a bailout option for selected patients when MR is the primary cause of haemodynamic collapse, even without apparent LVOT obstruction.

Left ventricular changes in moderate aortic stenosis in women compared to men.

AIMS: Sex differences in myocardial changes have been identified, but longitudinal investigations in moderate aortic stenosis populations are lacking. The objective of this study was to investigate sex differences in myocardial changes in aortic stenosis. METHODS AND RESULTS: We retrospectively collected longitudinal echocardiographic and clinical data of 542 patients with a diagnosis of asymptomatic moderate aortic stenosis. Baseline was defined as the first echocardiogram showing non-severe aortic stenosis.We enrolled 205 (37.8%) females and 337 (62.2%) males, with a median age of 69 years and a median follow-up duration of 6.47 years.Over the course of aortic stenosis, women had higher left ventricular ejection fraction, lower left ventricular mass index, larger relative wall thickness, and more diastolic dysfunction compared to men. Although the prevalence and incidence of concentric hypertrophy did not differ by sex, women developed concentric hypertrophy and diastolic dysfunction at lower mean gradients than men.Incidence and time of symptom occurrence did not differ by sex. Overall, 99 (48%) women and 148 (44%) men developed symptoms, at a median age of 73.4 [64.2;81.0] years and a mean gradient of 39.8 [31.5;47.5] mmHg, which was similar between the sexes. When symptomatic, women more commonly presented with dyspnoea (87.8% vs. 74.8%; P = 0.021). Incidence and time from baseline to aortic valve replacement and mortality were similar between men and women. CONCLUSION: Women with aortic stenosis have worse diastolic function, develop concentric hypertrophy and diastolic dysfunction at lower mean gradients, and more often present with dyspnoea. We observed no sex differences in time from baseline to replacement or mortality. SOCIAL MEDIA SUMMARY: Women with moderate aortic stenosis developed concentric hypertrophy at lower mean gradients, had more and earlier diastolic dysfunction, and more often presented with dyspnoea compared to men. No difference was observed in outcomes. #vhdAS #TAVR #WomenInCardiology.

Prognostic impact of cardiovascular magnetic resonance-derived left atrioventricular coupling Index in patients with severe aortic stenosis undergoing transcatheter aortic valve replacement.

AIMS: Transcatheter aortic valve replacement (TAVR) is an established therapy improving outcome in patients with severe aortic stenosis (AS). Cardiovascular magnetic resonance (CMR)-derived left atrioventricular coupling index (LACI) has demonstrated prognostic value, however, its prognostic utility in severe AS remains unknown. METHODS AND RESULTS: Between January 2017 and September 2023 138 consecutive patients with severe AS (80 years (70-83), 62% male) referred for TAVR were prospectively recruited for pre-procedural CMR imaging. LACI was defined as the ratio of the left atrial (LA) end-diastolic volume index (LA EDVi) and left ventricular (LV) end-diastolic volume index (LV EDVi). The primary endpoint was cardiovascular (CV)-mortality. The cohort was dichotomized at a median of 44.1% (high vs. low LACI). Patients with increased LACI (≥44.1%) had higher symptom burden (NYHA III/IV prevalence (68.1% vs. 44.9%; P = 0.047)), more frequently atrial fibrillation (50.7% vs. 14.5%; P < 0.001), and elevated NT-proBNP (2017 ng/L vs. 1012 ng/L; P = 0.007). Over a median follow-up of 2.7 years (IQR 1.7-3.6), high LACI was associated with higher CV mortality (log-rank P = 0.016). In exploratory multivariable Cox regression models, LACI remained associated with CV-mortality after adjustment for established parameters of left atrial or ventricular function (LA reservoir strain: HR 2.19, 95% CI 1.05-4.57, P = 0.036; LV GLS: HR 2.21 95% CI 1.00-4.9, P = 0.049). CONCLUSION: In patients with severe aortic stenosis, CMR-derived LACI was associated with cardiovascular mortality and may serve as a structural marker of advanced atrioventricular remodelling. Given its simplicity and routine availability in standard CMR workflows, LACI may serve as a clinically practical risk marker for baseline stratification.

Risk and Outcomes of Reintervention After Transcatheter Aortic Valve Implantation.

BACKGROUND: Concerns about transcatheter aortic valve implantation (TAVI) durability and failure management are increasing. This study assessed the time-varying risk and outcomes of reintervention after TAVI in Medicare patients. METHODS: Between 2013 and 2022, 2,387 out of 324,701 (0.7%) TAVI patients underwent reintervention. Bayesian survival analysis was used to identify three intervals based on the change in the hazard of reintervention after TAVI. Multivariable Bayesian models were used to assess the association between survival or heart failure (HF) hospitalizations and intervals controlling for relevant confounders. RESULTS: Three intervals of reintervention were identified: early <3.5 years post TAVI, mid-term 3.5-< 7 years, and late ≥7 years. The hazard rate of reinterventions increased after TAVI from 0.26% during the early interval to 0.35% at mid-term and to 0.98% at the late interval. The most frequent cause for reintervention was valve stenosis, and it increased in mid-term (60.4%) and late (70.8%) intervals vs. early (31.3%), P<0.001. The rate of valve-in-valve procedures increased from 53.9% in the early interval to 79.6% in mid-term and to 97.2% in late interval. The 30-day and 1-year mortality risk was similar for all intervals. The adjusted risk of HF hospitalization was higher after early vs mid-term or late reinterventions. CONCLUSIONS: The hazard of reinterventions after TAVI increased over time with a major rise after 7 years. Mortality after reintervention was similar in different intervals, however, the HF risk of readmission was higher after early reinterventions. Post-TAVI care should be adapted to the increasing risk of reintervention over time.

Outcomes of Unplanned Additional Transcatheter Aortic Valve Deployment.

BACKGROUND: Significant residual aortic insufficiency (AI), paravalvular leak, and an embolized valve after transcatheter aortic valve replacement (TAVR) may require an additional TAVR valve as an unplanned intervention. However, the outcome of an unplanned additional valve deployment is scarcely documented. We evaluated postoperative outcomes in patients with unplanned additional TAVR valve deployment. METHODS: Between January 2021 and September 2023, 1131 patients underwent TAVR at Albany Medical Center Hospital (Albany, NY). A balloon-expanding valve was placed in 98.3% of patients, whereas a self-expanding valve was used in 1.7%. RESULTS: An additional unplanned transfemoral transcatheter aortic valve deployment was required in 0.01% (9 of 1131) of the patients (0.07% [7 of 1112] in the balloon-expanding valve group and 10.5% [2 of 19] in the self-expanding valve group. The indication for an additional valve was severe AI, valve embolization, or improper position of the first valve (66.7%, 22.2%, and 11.1%, respectively). AI was resolved in all patients except for 1, who died after second valve deployment for severe AI. Permanent pacemaker placement after a second TAVR was required in 2 patients (22%). The 30-day mortality was 16.7% (1 of 6) in the severe AI group, 0% (0 of 2) in the valve embolization group, and 0% (0 of 1) in the improper position group. The mean follow-up term was 5.3 (6.4) months. No aortic valve reintervention was performed in the follow-up term. The cumulative survival rates in patients with unplanned additional valve deployment were 88.9% at 1 month and 71.1% at 12 months. CONCLUSIONS: The outcome of unplanned second valve deployment in TAVR was satisfactory. However, unplanned additional valve deployment may increase the risk of permanent pacemaker placement.

Right-heart reversibility, not tricuspid grade alone, should guide intervention in aortic stenosis

Carducci and colleagues1 should be congratulated for bringing attention to an important and often-underrecognized problem in contemporary aortic stenosis care: significant tricuspid regurgitation (TR) at the time of transcatheter aortic valve replacement (TAVR) evaluation is not benign. Their finding that moderate-to-severe TR predicts worse long-term survival after TAVR is clinically important.

Balloon-expandable vs. self-expandable transcatheter aortic valve implantation in bicuspid aortic valve stenosis: a meta-analysis of observational studies.

PURPOSE: If patients with bicuspid aortic valve (BAV) stenosis are high-risk candidates for traditional open-heart surgery, they can be treated with transcatheter aortic valve replacement (TAVR). The purpose of this study is to understand the effects of balloon-expandable valves (BEVs) and self-expandable valves (SEVs) as they are used in TAVR on patients with BAV stenosis. METHODS: We searched the databases PubMed, Embase, Cochrane, and ScienceDirect from their inception until January 2025. An odds ratio (OR) and corresponding 95% confidence interval (CI) were determined for every outcome, with statistical significance at p-value < 0.05. Random-effects models were used for studies with high heterogeneity (I 2 > 50%), and fixed-effects models for low heterogeneity (I 2 ≤ 50%). RESULTS: Nine observational studies were included. There was no significant difference found for the following outcomes: procedural death, 30-day mortality, 1-year all-cause mortality, annulus rupture, acute kidney injury, stroke, and moderate/severe paravalvular leak between BEV and SEV.Still, having a BEV was associated with a lower risk of needing a pacemaker or requiring second valve surgery. CONCLUSION: From this analysis, it seems that BEVs may provide better results than SEVs in terms of reducing the need for a pacemaker and a second valve in patients with BAV stenosis treated with TAVR. The number of deaths and serious complications was about the same for the two valves. Additional randomized controlled trials are needed to study both the lasting effects and the factors that shape these results. PROSPERO ID: CRD420251003387. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s12055-025-02111-6.

Outcome of cerebral embolic protection during transcatheter aortic valve replacement in high-risk patient for stroke.

OBJECTIVES: The sentinel cerebral embolic protection device has been used as prophylaxis of stroke and transient ischemic attack during transcatheter aortic valve replacement. However, there are no absolute criteria guiding cerebral embolic protection device placement. This study aimed to evaluate the impact of cerebral embolic protection on postoperative cerebrovascular events in patients at high risk for stroke. METHODS: Between April 2021 and August 2023, 695 patients underwent transcatheter aortic valve replacement through a transfemoral approach. The cerebral embolic protection device was placed at the beginning of transcatheter aortic valve replacement procedure when 1 of the following criteria was met preoperatively: bicuspid aortic valve, valve-in-valve procedure, or calcium score in computed tomography greater than 1000. Of 695 patients with transcatheter aortic valve replacement, 636 met the criteria. The cerebral embolic protection device was placed in 55% of patients (350/636, cerebral embolic protection group) and not placed in 45% of patients (286/636, non-cerebral embolic protection group) because cerebral embolic protection was not feasible anatomically. A 1:1 propensity score matching was performed using the nearest neighbor method between cerebral embolic protection and non-cerebral embolic protection groups. RESULTS: A total of 245 pairs were matched in propensity score matching. After matching, postoperative stroke/transient ischemic attack occurred in 0.4% (1/245) in the cerebral embolic protection group and 2.9% (7/245) in the non-cerebral embolic protection group. A significant difference was noted in postoperative stroke/transient ischemic attack between the 2 groups (P = .03). Early mortality and other complications did not differ between the 2 groups. In postoperative follow-up, incidence of stroke/transient ischemic attack was similar in 30 days (2.0% vs 1.2%, P = .72) and 1 year (0.4% vs 1.2%, P = .62). There was no vascular complication at the cerebral embolic protection access site. CONCLUSIONS: Cerebral embolic protection during transcatheter aortic valve replacement might reduce postoperative cerebrovascular events in patients who are high risk for stroke in this patient cohort.

Midterm analysis of tricuspid regurgitation in patients undergoing transcatheter mitral valve-in-valve replacement: A retrospective study.

OBJECTIVE: The evolution of concomitant tricuspid regurgitation (TR) after transcatheter mitral valve-in-valve replacement (TM-ViV) is poorly characterized. Therefore, we aimed to analyze the midterm changes in TR following TM-ViV at our center. METHODS: Clinical data of patients who underwent TM-ViV at Guangdong Provincial People's Hospital was retrospectively analyzed. In total, 96 patients underwent TM-ViV between April 2020 and October 2023. RESULTS: Preoperatively, 26 patients had mild or less TR (none/mild TR group), whereas 70 patients had moderate or more TR (moderate/severe TR group). The mean follow-up time was 32.4 ± 11.8 months, and the proportion of patients with moderate/severe TR at 1 month and 1 year postoperatively was significantly lower than the preoperative value (1 month: 47.3% vs 72.9%; P < .001; 1 year: 50.0% vs 72.9%; P = .001). No significant difference in midterm mortality outcomes was observed between the 2 groups (P > .999). CONCLUSIONS: After TM-ViV surgery, the degree of TR decreased in a majority of patients who had moderate or severe TR preoperatively at midterm follow-up. However, due to limited statistical power, our exploratory analysis could not establish an association between preoperative TR and midterm mortality. Therefore, the prognostic influence of TR severity in this setting remains uncertain and requires validation in future studies.

Outcomes of transatrial transcatheter mitral valve replacement with a balloon-expandable valve for severe mitral annular calcification.

OBJECTIVE: To evaluate operative and midterm outcomes, including 1-, 3-, and 5-year survival, of transatrial transcatheter mitral valve replacement (TA-TMVR) with a balloon-expandable valve for severe mitral annular calcification (MAC). METHODS: We retrospectively reviewed patients with severe MAC who underwent TA-TMVR from 2014 to 2024 using a balloon-expandable prosthesis. RESULTS: Twenty-five patients (68% were female, mean age 75 years) had TA-TMVR for mitral valve disease (92% severe stenosis, 52% moderate-to-severe mitral regurgitation). Previous cardiac surgery was common (48%). Median Society of Thoracic Surgeons Predicted Risk of Operative Mortality was 9% (2%-26%). Most patients were New York Heart Association class III or IV (76%). Preoperative left ventricular ejection fraction was 66%. Concomitant procedures were performed in 68% of cases (aortic valve replacement in 11, septal myectomy in 6, other procedures in 9). A SAPIEN 3 valve was used in 24 patients; most were modified with a felt skirt to improve sealing. Anterior leaflet resection was performed in 24 patients. Operative mortality was 12%. Median length of stay was 14 days. Postoperative left ventricular ejection fraction was 64%, and the mean mitral valve gradient was 5 mm Hg. Paravalvular leak were observed in 6 patients; 3 underwent successful transcatheter closure. One of these patients required a percutaneous valve-in-valve for on-going hemolysis. One-, 3-, and 5-year survival was 68%, 59.5%, and 50.6%, respectively. CONCLUSIONS: TA-TMVR with a balloon-expandable valve is a feasible and durable option for high-risk patients with severe MAC and those requiring concomitant procedures, offering an alternative to conventional surgery in anatomically complex or otherwise-inoperable cases.

Mitral valve surgery post-transcatheter aortic valve replacement: A 10-year, single-center, retrospective analysis.

OBJECTIVE: Cardiac operations after transcatheter aortic valve replacement (TAVR) are complex procedures with high morbidity and mortality. We sought to determine the outcomes of mitral valve surgery in patients with previous TAVR. METHODS: Among 2339 patients who underwent mitral valve surgery at our institution between July 2014 and July 2024, a retrospective, descriptive analysis was performed on 19 consecutive patients with a history of TAVR requiring mitral valve surgery. RESULTS: Mean age was 73.1 ± 9.5 years. The median (interquartile range) time since TAVR was 1 year (1, 3). The indication for mitral valve surgery was active infective endocarditis in 4 patients (21%), and degenerative disease in the remaining. The average Society of Thoracic Surgeons predicted risk of mortality was 12.0 ± 9.3%, with 6 (31.6%) urgent and 2 (10.5%) emergent operations. Nine patients (47.3%) had history of previous cardiac surgery. Mitral valve repair was performed in 1 patient, whereas replacement with a bioprosthetic valve in all other cases. Transcatheter valve explant was necessary in 10 operations (52.6%), and 13 patients had a concomitant procedure. The primary end point of all-cause mortality at 30 days was met in 5 patients (26.3%), 3 of whom underwent TAVR explant. One patient (5.3%) suffered a stroke. Median crossclamp and cardiopulmonary bypass times were 144 (106, 189) and 214 (155, 253) minutes, respectively. Postoperative dialysis was required in 4 (21.1%). One patient required a reintervention and 3 were re-hospitalized after discharge. CONCLUSIONS: Mitral valve surgery in the presence of TAVR is uncommon but carries a high risk of mortality and morbidity.

Predicting subclinical leaflet thrombosis in self-expandable prosthesis: A multimodal machine learning analysis.

OBJECTIVE: Subclinical leaflet thrombosis is a known finding after transcatheter aortic valve implantation, but its predictors remain poorly defined. Machine learning offers new opportunities for identifying complex, nonlinear relationships among clinical, anatomic, and hematological variables. METHODS: We analyzed data from 118 patients who underwent transcatheter aortic valve implantation with self-expanding valves and scheduled multidetector computed tomography at 6 months. A total of 120 preprocedural and postprocedural variables were included. Three machine learning models, least absolute shrinkage and selection operator logistic regression, Random Forest, and Extreme Gradient Boosting, were trained and internally validated using stratified 5-fold cross-validation. RESULTS: Subclinical leaflet thrombosis was identified in 22 patients (18.6%). Bicuspid aortic valve morphology emerged as one of the strongest predictors across all machine learning models (least absolute shrinkage and selection operator β = 1.33; Gini = 1.31; SHapley Additive exPlanations = 0.42). Other top predictors included serum creatinine (β = 0.29; Gini = 0.90), hemoglobin decrease (β = 0.05; Gini = 1.32; SHapley Additive exPlanations = 0.10), hematocrit decrease (β = 0.02; Gini = 1.43; SHapley Additive exPlanations = 0.11), and platelet nadir (SHapley Additive exPlanations = 0.09). All models demonstrated strong discriminative ability (area under the curve range, 0.84-0.89; Brier scores: 0.040-0.163). CONCLUSIONS: This is the first study to apply a multimodal machine learning framework to predict subclinical leaflet thrombosis after transcatheter aortic valve implantation. Bicuspid anatomy and perioperative hematological changes were consistently associated with subclinical leaflet thrombosis, highlighting the potential of machine learning to enhance postprocedural risk stratification. Incorporating routinely available variables into machine learning models may help guide early imaging and personalized antithrombotic strategies.

Transapical transcatheter valve implantation for aortic regurgitation: a multicenter, prospective trial.

OBJECTIVES: We evaluated the safety and efficacy of transcatheter aortic valve replacement (TAVR) up to 1-year follow-up for patients with severe pure aortic valve regurgitation (AR) or mixed severe aortic valve regurgitation and aortic valve stenosis (AR+AS) using a novel self-expandable bioprosthesis. METHODS: From 2021 and 2022, transapical TAVR using Ken-Valve (Jenscare Biotechnology Ltd, Ningbo, China) was performed in 142 symptomatic patients (mean age 70.3 ± 5.5 years) with pure AR (n = 109) or AR+AS (n = 33) across 15 hospitals in China. All patients were considered high-risk or inoperable after heart team evaluation, with a mean Society of Thoracic Surgeons score of 5.9 ± 3.0%, and 99.3% in NHYA class III/IV. Procedural characteristic, echocardiography data and clinical outcomes up to 1 year were analyzed. RESULTS: Technical success was achieved in 97.2% of cases. Two (1.4%) patients were converted to open surgery due to unsuitable anatomy or valve migration during the procedure. New permanent pacemakers were implanted in 20(14.1%) patients. Three (2.1%) patients had stroke, and 3(2.1%) patients had major bleeding. 30-day mortality was 2.1%, and all-cause mortality at 1-year was 5.6% (8/142). Mean aortic valve gradient and effective orifice area (EOA) at 1 year postoperatively were 9.4 ± 5.4 mmHg and 1.9 ± 0.6cm2, respectively. Significant improvement in clinical symptoms, positive left ventricular remodelling, and quality-of-life were observed up to 1-year. There was no significant difference in mortality, complications, and haemodynamic performance between patients with pure AR and AR+AS at 1-year. CONCLUSIONS: TAVR using the Ken-Valve was safe and effective in patients with pure AR or mixed AR+AS in mid-term.Transapical transcatheter valve implantation for aortic regurgitation: a multicentre, prospective trial.

Autonomous Agents for Auditable Cardiovascular Artificial Intelligence Development

Clinical artificial intelligence (AI) models are usually reported as finished artifacts, but each model reflects a limited human search across a much larger space of architectures, inputs, losses, optimizers, and training recipes. We tested whether autonomous code-writing agents could perform a controlled model-development experiment: proposing and evaluating code changes, and seeking performance gains without new data or human-guided edits. We built two such agents: an Iteration Agent that searches sequentially, keeping the best variant at each step, and an Evolution Agent that searches for variations in parallel using multiple large language models and prioritizes high-performing lineages across generations. In two architecturally distinct AI-enhanced electrocardiography (AI-ECG) models for structural heart disease, agent-optimized variants improved rank discrimination across held-out, external, and cross-institution evaluations, with area under the receiver operating characteristic curve gains of +0.006 to +0.039 (paired p < 0.05). At a fixed 90% sensitivity, specificity rose by up to 7.1 percentage points and positive predictive value by up to 4.8 percentage points. The selected code changes were substantive, spanning architecture, representation, and training recipe variations. These findings position autonomous agents as an auditable layer for clinical AI model improvement, provided that candidate selection, external validation, and post-update governance are explicit. We release these agents as an open, reusable toolkit.

Ecological Cascades and Future Hantavirus Spillover Risk in a Changing Climate

Anthropogenic climate change is reshuffling global biodiversity and accelerating zoonotic spillover at the human-wildlife interface. The 2026 multi-country cruise ship outbreak of Andes virus highlights the unpredictable and globalized threat posed by rodent-borne orthohantaviruses, which cause severe, highly fatal human diseases worldwide. Despite this significant public health risk, macroecological synthesis linking environmental drivers to systemic shifts in hantavirus hazards has been lacking. Here, we implement an integrated ecological and machine learning framework combining 89 unique virus-host associations across 61 reservoir species with mechanistic Force-of-Infection (FOI) modeling to project global spillover hazards under current and future climate scenarios (SSP2-4.5 and SSP5-8.5) for 2041-2060. Our models demonstrate a spatially uneven but geographically extensive expansion of spillover hazards, with approximately 74.9% of modeled land area experiencing an increase in FOI. We identify three distinct high-hazard belts heavily concentrated in already-temperate reservoir ranges: western and central North America, central and northeastern Europe extending into western Russia, and discrete patches within central South America. Crucially, our findings reveal that hantavirus hazards are fundamentally shaped along virus-specific ecological axes. While thermal and precipitation anomalies predominate the transmission dynamics of Old and New World lineages like Sin-Nombre virus and Thailand virus, distinct urban-centric Profiles emerge for Seoul virus and Mamore virus, driven explicitly by fine-scale anthropogenic landscape modifications. These results reveal that climate change will not simply intensify viral spillover uniformly but will fundamentally restructure it across varied climatic and human-dominated environments. Our maps provide a critical baseline for targeted global surveillance and highlight the urgent need to integrate spatial conservation planning with public health preparedness.

Enteric pathogen burden and co-infection patterns across age and a rural-urban gradient: findings from the ECoMiD birth cohort, Northern Ecuador

Enteric pathogen infections are a major global health challenge, influenced by a variety of host and environmental factors, and their clinical presentation and treatment can be complicated by the presence of co-infections. The prevalence of enteric infections and co-infections tend to vary between rural and urban contexts, likely driven by underlying environmental, geographic, and demographic characteristics. To improve understanding of urbanicity and age on enteric pathogen prevalence and on co-infection risk, we measured 22 enteric pathogens in fecal samples collected from children aged 6, 12, and 18 months across a rural-urban gradient within the ECoMiD birth cohort study (n=473). Enteric pathogen burden was high and increased with age, with at least one pathogen detected in 91% of children at 6 months, 97% at 12 months, and 98% at 18 months. However, prevalence of some pathogens-- notably Salmonella enterica, enterovirus, and rotavirus-- decreased with age. Co-infections were also common (88%), and children were infected with as many as 11 pathogens simultaneously. The most frequently observed co-infection profiles included enteroaggregative E. coli and atypical enteropathogenic E. coli, followed by combinations with diffusely adherent E. coli, enterovirus, enterotoxigenic E. coli, and/or adenovirus. Enteric pathogen detection generally was higher in more rural settings, though patterns varied by pathogen. These results provide useful information for future examination of pathogen dynamics of co-occurrence. Given the ubiquity of enteric infections in high transmission settings, strategies that aim to reduce overall microbial exposure may be needed to supplement interventions targeting control of individual pathogens.

IL-21-producing peripheral helper T cells associate with autoimmune bile duct injury in biliary atresia

Abstract Background: Biliary atresia (BA) is a severe neonatal liver disease characterized by progressive fibrosis and bile duct obliteration. Objective: Although immune dysregulation is implicated in the pathogenesis of BA, the specific mechanisms driving bile duct injury remain incompletely understood. This study aimed to characterize tertiary lymphoid structures (TLSs) within extrahepatic biliary remnants (EBRs), identify their cellular mediators, and evaluate the therapeutic potential of targeting IL-21 receptor signaling. Design: We performed integrated bulk RNA sequencing, single-cell RNA sequencing, spatial transcriptomics, multiplex immunohistochemistry, and flow cytometry on clinical samples from BA patients and non-BA cholestatic controls. TLS maturation was assessed by CD23 immunohistochemistry in EBRs from 148 BA patients and correlated with clinical parameters. Anti-IL-21R antibody treatment was evaluated in a rhesus rotavirus-induced BA mouse model, with treatment initiated on day 4 post-infection. Results: TLSs were identified in BA EBRs with significantly higher prevalence than in matched liver tissues. Mature TLSs containing CD23 germinal centers were associated with elevated serum matrix metalloproteinase-7, more advanced hepatic fibrosis, and localized autoantibody deposition on injured bile ducts. Single-cell profiling revealed expanded CD4+ T peripheral helper (Tph) cells expressing IL-21 and CXCL13 within TLS-containing EBRs. Tph cells were enriched in peripheral blood of BA patients compared to non-BA cholestatic controls (P = 0.0025), and serum IL-21 was significantly elevated (P < 0.0001). Post-infection IL-21R blockade in the mouse model reduced jaundice incidence, improved weight gain, prevented extrahepatic biliary obstruction, and significantly improved long-term survival. Conclusion: TLSs in BA extrahepatic biliary remnants harbor expanded Tph cells associated with IL-21-mediated B cell activation and bile duct injury. IL-21R blockade ameliorated disease in a murine BA model, identifying the IL-21/IL-21R axis as a potential therapeutic target warranting further investigation.

Mechanism of membrane perforation in rotavirus cell entry

Cell entry of non-enveloped, animal viruses requires translocation of a macromolecular assembly across a cellular membrane. Double-stranded RNA viruses introduce into the target cell an inner capsid particle that does not uncoat further. Instead, it extrudes capped viral mRNA by virtue of polymerase and capping activities within it. As described here, we used cryogenic electron tomography to visualize the full course of rhesus rotavirus entry, from cell attachment and virion uptake to release of the subviral particle. The cryo-tomograms and subtomogram averaging of classified subparticles link high-resolution structures of the virion and its components with time series from live-cell fluorescence microscopy. We outlined the mechanism of each step in the entry process, including the membrane perforation step that transfers a subviral particle into the cytosol.

Exposure to P. falciparum and common cold viruses shape vaccine responses in early life

Vaccine immunogenicity is consistently lower in low-income countries than in high-income settings, yet the factors driving this disparity remain incompletely understood. Using multiplexed electrochemiluminescence serology, we measured IgG and IgA responses to Expanded Program on Immunization (EPI) vaccines and common childhood viral infections in 89 Ugandan infants. We integrated detailed parasitological surveillance and maternal clinical data to examine how P. falciparum infection history, concurrent parasitemia, maternal gravidity, and early-life viral exposures shaped serological profiles. We found that infants mounted robust responses to most EPI vaccines, but critical gaps in protection persisted for diphtheria, measles and rubella. Children born to primigravid mothers had lower antibody levels at 8 weeks of age, independent of placental malaria and only partially explained by maternal age. Contrary to expectation, cumulative P. falciparum exposure was positively associated with antibody concentrations to diphtheria and varicella, and concurrent parasitemia was positively correlated with responses to multiple antigens. Early seroconversion to rhinovirus C was associated with higher polio IgA and rotavirus IgG concentrations at 24 weeks. Together, these findings suggest that common microbial exposures during infancy, including respiratory viruses and P. falciparum may positively modulate vaccine responsiveness.

Dithionite quenching of NBD-labeled lipids reveals artificial lipid droplet purity and neutral lipid surface accessibility

Artificial lipid droplets (aLDs) provide a controllable platform for studying lipid biochemistry, but their use is limited by contamination with other membrane structures and the lack of quantitative methods to assess sample purity. Here, we establish dithionite quenching of NBD-labeled lipids as a simple approach to evaluate aLD purity. The approach relies on dithionite's ability to selectively quench NBD fluorophores exposed in the phospholipid monolayer of aLDs and in the outer leaflet of liposome bilayers, but not those protected within the inner leaflet of liposome bilayers. Consistent with liposome contamination, bulk aLD preparations exhibit incomplete quenching, which can be separated by sucrose gradient centrifugation into liposome-like and droplet-enriched populations based on quenching behavior. Guided by this assay, sonication conditions were optimized to increase aLD purity and reduce liposome contamination. A biotin-streptavidin immobilization strategy further enabled stable imaging of individual aLDs. Finally, we applied this method to probe the accessibility of neutral lipids within aLDs. This revealed hydrophobicity-dependent quenching kinetics of neutral lipids, with less hydrophobic diacylglycerols showing greater surface exposure within aLDs than more hydrophobic triacylglycerols and cholesterol esters. Taken together, these establish dithionite quenching of NBD-labeled lipids as a simple quantitative method for assessing aLD purity and demonstrate its utility for studying lipid accessibility.

Leptospirosis occurs as frequently as malaria among adolescent and adult acute febrile patients in Hoima, Uganda: A prospective health facility-based study

Background Leptospirosis is substantially underdiagnosed across sub-Saharan Africa, with its contribution to acute undifferentiated fever (AUF) poorly characterized. We determined the prevalence, risk factors, and clinical profile of leptospirosis among adolescents and adults presenting with AUF at a referral hospital and health centre in Hoima, western Uganda. Methods: In a prospective health facility-based study with convalescent follow-up, blood and urine from AUF patients were tested by LipL32 real-time PCR (qPCR) and microscopic agglutination (MAT). Leptospirosis was confirmed by qPCR positivity, a single test MAT titre of 1:800, or at least a fourfold titre rise or seroconversion in paired sera. Seroconversion was defined as a change from negative or 1:50 to 1:100 (conservative) or 1:200 (lenient). Seroprevalence was defined as a MAT titre of 1:100 or above in any sample. Risk factors were identified by multivariable logistic regression. Results: Among 330 AUF patients, acute leptospirosis prevalence was 27.0% (95% CI 22.3 to 32.1; conservative) and 32.7% (95% CI 27.7 to 38.1; lenient), comparable to malaria at 30.3% (95% CI 25.3 to 35.3), with co-infection in 8.8% (95% CI 5.7 to 11.8). qPCR detected Leptospira DNA in 9.1%, with 63.3% of qPCR-positive cases serologically confirmed and 24.4% of serological cases, qPCR-positive. Seroprevalence was 35.8% (95% CI 30.6 to 41.2); L. interrogans serovar Bataviae was predominant (18.2% of serological cases), reported here for the first time in Uganda. Skinning animals (aOR 5.19, 95% CI 1.40 to 21.16) and mosquito exposure (aOR 2.31, 95% CI 1.17 to 4.70) were the only independent risk factors in multivariable analysis. Discussion: Leptospirosis occurs as frequently as malaria among AUF patients in Hoima and warrants inclusion in Uganda's national febrile illness guidelines. The association of leptospirosis with skinning of animals suggests a potential role of animal exposure in leptospirosis transmission. Poor qPCR-MAT concordance confirms that accurate case ascertainment requires combined molecular and serological diagnostics.

SAFER-TAVI: Radial Eases Secondary Access Site Problems

SAFER-TAVI: Radial Eases Secondary Access Site Problems cmacahilig@crf.org Mon, 07/06/2026 - 15:41 Todd Neale The findings should lead to changes in practice, David Cohen says, but as seen in the setting of PCI, “old habits die hard.”

TCTMD’s Top 10 Most Popular Stories for June 2026

TCTMD’s Top 10 Most Popular Stories for June 2026 cmacahilig@crf.org Wed, 07/01/2026 - 15:13 Todd Neale TAVI news, including stories from the recent New York Valves conference, claimed several of the top spots.

Enteric pathogen infections among infants in rural Bangladesh: prevalence, trial impact, and associations with enteric dysfunction and growth.

Background: Repeated enteric infections and chronic enteric dysfunction have been associated with undernutrition in children. Interventions that reduce enteric pathogen exposure in young children could thereby improve growth and developmental outcomes. We assessed enteric pathogen prevalence in Bangladeshi infants, the impact of a combined homestead food production and food hygiene intervention on pathogen infections, and associations between pathogen infections, enteric dysfunction markers, and child growth outcomes. Methods: We analyzed panel data from 231 children born between April and December 2018 within the Food and Agricultural Approaches to Reducing Malnutrition (FAARM) cluster-randomized trial in Sylhet, Bangladesh. Stool samples were collected at 0-3, 6-8, and 10-13 months of age and assessed for enteric dysfunction biomarkers (myeloperoxidase, alpha-1 antitrypsin, and neopterin) by ELISA and 14 enteric pathogens by multiplex RT-PCR. Diarrhea prevalence was recorded using 7-day recall. Child length and weight were measured at birth and trial endline. Multilevel regression assessed the intervention effect and quantified associations between pathogen exposure, enteric dysfunction, and growth outcomes. Findings: Enteric pathogen prevalence was high (84%) despite low 7-day diarrhea prevalence (5%), and co-infections were common. There was no intervention effect on the prevalence of enteric pathogens. Shigella spp. and Giardia lamblia were associated with higher myeloperoxidase concentrations, while sapovirus was associated with higher alpha-1 antitrypsin concentrations. Repeated protozoan infections (mainly Giardia lamblia) were associated with lower length-for-age, while repeated viral infections (mainly rotavirus and sapovirus) and Cryptosporidium infections were associated with lower weight-for-height and weight-for-age. There was marginal evidence that bacterial infections were associated with lower length-for-age. Conclusion: The intervention was insufficient to reduce the high burden of enteric pathogens in infants, and subclinical infections were associated with enteric dysfunction and poorer growth outcomes. Comprehensive strategies addressing all key exposure pathways are needed to limit pathogen infections and their consequences for child development.

Top Cardiology News for June 2026

Top Cardiology News for June 2026 cmacahilig@crf.org Wed, 06/24/2026 - 07:38 Publish Date --> 20 hours 57 minutes ago Teaser --> The TCTMD journalists talk about 10-year TAVI data, a FLOW subanalysis, and women's heart centers in Europe. NY Valves co-director David Cohen joins as a guest.

Agentic Autodiscovery of Diastolic Dysfunction Phenotypes from Surface Electrocardiogram

Background: Left ventricular diastolic dysfunction (LVDD) is a major determinant of heart failure (HF), yet its assessment relies on multiparametric echocardiography, limiting scalability. We previously demonstrated that generative artificial intelligence (AI) can synthesize tissue Doppler imaging (TDI) waveforms from the 12-lead ECG. The growing complexity of candidate architecture creates a need for automated model-discovery frameworks. Objectives: To evaluate agentic AI-based auto-discovery for ECG-based LVDD assessment using either raw ECG or synthetic TDI waveforms. Methods: Two attention-based agentic AI architectures were developed using an automated large language model-driven refinement framework that optimized transfer-learning and multimodal architectures through autonomous proposal, validation, and selection of candidate model configurations. Development was performed in 1,011 paired ECG-echocardiography studies and externally validated in 983 patients using two reference frameworks: (i) data-driven phenogroups and (ii) the 2025 ASE Diastolic Function Guidelines. External validation was performed in CODE-15% (n=219,567) for HF-related mortality and EchoNext (n=35,718) for structural heart disease associations. Results: Despite the modest cohort size, the ECG-based agentic search achieved area under the receiver operating characteristic curve (AUCs) of 0.87 (95% CI: 0.85-0.89) and 0.83 (95% CI: 0.80-0.86) for phenogroup and guideline-based LVDD severity classification. Corresponding AUCs for the synthetic TDI-based model were 0.82 (95% CI: 0.80-0.85) and 0.80 (95% CI: 0.77-0.84), respectively. In large-scale external validation, both models stratified incident HF mortality with subdistribution hazard ratios ranging 5.5 to 9.5 (Gray's p<0.001 for all). Time-dependent discrimination for incident HF mortality exceeded a publicly available convolutional neural network model (ECG2HF) ({Delta}AUC range: +0.14 to +0.20). Both models demonstrated consistent associations with structural heart disease outcomes. Conclusions: Agentic auto-discovery enabled data-efficient assessment of LVDD from surface ECG by combining physiologically informed transfer learning with autonomous architecture optimization, achieving robust external generalizability. This approach may facilitate broader access to diastolic function assessment beyond conventional echocardiography.

Characterisation of disease progression in hantavirus haemorrhagic fever with renal syndrome

Hantaviruses can cause haemorrhagic fever with renal syndrome (HFRS). This is a clinically variable disease in which severe outcomes are hypothesized to arise from dysregulated host responses. To characterise this, longitudinal, label-free plasma proteomics was used to compare disease progression in a unique well-defined cohort of patients infected with either Dobrava virus (DOBV) or Puumala virus (PUUV) hantaviruses. Patients were stratified by clinical severity. The average viral load in the first available sample from hospitalized patients was higher in those who went on to have severe infection, and higher in patients infected with DOBV. There was marked separation of infected patients from controls across early, mid and late disease, including after viral RNA clearance, suggesting a sustained systemic host-response signature. Proteomic signatures were consistent with a strong acute-phase response in both mild and severe disease. There was evidence of activation of the adaptive humoral response at later stages. Hierarchical clustering identified severity-associated pathways linked to endothelial dysfunction, thrombocytopenia, vascular leakage and renal injury. These findings define a durable plasma proteomic signature of hantavirus disease and support a model in which severe HFRS is driven by persistent inflammatory, complement and platelet/coagulation pathway activation rather than viral burden alone.

Cardio Heart Connect: Protocol for a Randomized Trial of a Commercially Available mHealth Fitness Intervention for Cardiac Rehabilitation After Transcatheter Aortic Valve Replacement

Background: Despite ample evidence of the benefits of cardiac rehabilitation (CR), few transcatheter aortic valve replacement (TAVR) patients participate. Commercially available mobile health offers an opportunity to deliver activity-promotion content to populations that are challenged to participate in CR. This study aims to test the efficacy of clinically controlled, commercially available fitness programming for improving physical activity and cardiovascular health outcomes designed to be initiated while patients are on waitlists for traditional CR. Methods: The Cardio Heart Connect study is a hybrid type I effectiveness-implementation trial aiming to enroll N=200 patients who have been placed on a cardiac rehab waitlist following a TAVR procedure from the University of Colorado Hospital Heart and Vascular Center. Participants will be randomized 1:1 to the Cardio Heart Connect intervention with commercially available fitness or attention control, designed to control for technology access. At baseline, post-intervention (8 weeks), and follow-up (12 months), we will assess the primary outcome of participants? daily steps as measured by smartwatch accelerometer and secondary outcomes of interest including functional capacity (Duke Activity Status Index; VO2max), quality of life (Kansas City Cardiomyopathy Questionnaire), and cardiovascular health status (Life Essential 8). In addition, we will use mixed methodologies to evaluate the implementation of intervention using the Reach, Effectiveness, Adoption, Implementation, and Maintenance (RE-AIM) Framework. Conclusions: Commercially available fitness programs have the potential to provide more accessible opportunities for patients recovering from TAVR to engage in physical activity and may be preferred due to their customizability, convenience, and ease of scheduling. Overall, this study will provide insight into the use of commercial mHealth to promote activity following TAVR.

Co-Circulation of Multiple Kolmiovirus Lineages Through Vertebrate Evolution

Although once only characterised by human hepatitis deltavirus (HDV), membership of the family Kolmioviridae has dramatically expanded in recent years. Despite this transformation in our understanding of the host range of the kolmioviruses, the evolutionary history of this enigmatic group of RNA viruses is unclear. Kolmioviruses are characterised as small (~1.7kb) satellite viruses that require unrelated helper viruses for replication and encode a single ~200 amino acid delta antigen (DAg). Here, we describe eight novel kolmioviruses from metatranscriptomic studies of the American alligator (Alligator missippiensis), red kangaroo (Osphranter rufus), and central bearded dragon (Pogona vitticeps), as well as avian kolmioviruses mined from the Sequence Read Archive (SRA). Although the novel kolmioviruses were often found in samples co-infected by other viruses, there was no evidence for the presence of hepatitis B virus as seen in HDV. By employing a range of sequence data sets, alignment methods, alignment trimming methods, and substitution models, we provide an evolutionary history of the Kolmioviridae that maximises the extent of virus-host co-divergence and refines estimates of their evolutionary timescale. Although DAg amino acid sequences are more conserved than nucleotide sequences and hence might be expected to result in more accurate phylogenetic trees, we show that full genome nucleotide sequences likely provide the best representation of kolmiovirus evolution. More broadly, our results reveal that irrespective of the data set used, multiple distinct kolmiovirus lineages have co-circulated throughout vertebrate evolution over timescales spanning hundreds of millions of years, with the association between HDV and HBV only appearing recently.

Prevalence and Clinical Impact of Pathogenic Variants in Cardiomyopathy Genes Among Individuals with Cardiac Conduction Disorders

Importance: Cardiac conduction disorders have traditionally been regarded as a secondary manifestation of underlying structural heart diseases. However, isolated conduction disorders may precede the onset of heart failure (HF) suggesting shared mechanisms. Objective: To evaluate the prevalence and clinical significance of pathogenic/likely pathogenic (P/LP) rare variants in cardiomyopathy genes among individuals with conduction disorders. Design, Setting, and Participants: Biobank analysis of 192,834 participants with whole genome sequence data from Vanderbilt's BioVU and 353,092 participants from the All of Us Research Program (AoU). Participants with primary conduction disorder (left bundle branch block [LBBB], right bundle branch block [RBBB], high-grade atrioventricular block [AVB]) were identified after excluding secondary causes. Exposures: P/LP variants in cardiomyopathy genes. Main Outcomes and Measures: Primary outcome was P/LP carrier status by age and HF status. Secondary outcomes included incident HF and composite ventricular arrhythmias/sudden cardiac death/mortality (VA/SCD/mortality). Results: Among 16,959 participants with conduction disorders in BioVU and 13,442 in AoU, 432 (2.6%) and 206 (1.5%) were P/LP carriers, respectively. Conduction disorder was independently associated with carrier status (BioVU p<0.001; AoU p=0.005). Carrier probability varied by age at conduction disorder onset and HF status. Among participants with HF at age 30 years, predicted carrier probability for LBBB was 7.5% in BioVU and 20.2% in AoU; for high-grade AVB, 7.7% and 8.5%, respectively, compared with 3.7% and 2.9% among those with HF without conduction disorder. P/LP carrier status among participants with conduction disorders was associated with increased risk of incident HF (BioVU p<0.001; AoU p<0.001) and ventricular arrhythmia/sudden death/mortality (BioVU p<0.001; AoU p<0.001). Carriers also demonstrated increased susceptibility to conduction disorder following HF diagnosis, including more than two-fold higher risk of third-degree AVB (BioVU aOR 2.48, 95% CI 1.85-3.32; AoU aOR 2.26, 95% CI 1.35-3.80). Conclusions: Adults with primary conduction disorders have an increased prevalence of P/LP variants in cardiomyopathy genes, which is most pronounced with diagnoses at early ages of adulthood. Furthermore, there is evidence of an interaction between P/LP carrier status and conduction disorder to increase HF risk and composite cardiovascular outcomes, underscoring the potential role of genetic evaluation in patients with primary conduction disorders to inform long-term outcomes.

Hantavirus Disease in Uruguay: Trends and Mortality Before and During the COVID-19 Pandemic.

Introduction: Hantavirus disease is an emerging and potentially severe zoonosis of global distribution. In Uruguay, it is transmitted by rodents inhabiting peridomestic, suburban, and rural areas. Global incidence is estimated at 150,000 to 200,000 cases per year, with up to 300 annual cases in the Americas. Since 1997, Uruguay's Ministry of Public Health (MPH) has monitored Hantavirus cardiopulmonary syndrome (HCPS), the most common clinical presentation in the region. By 2019, a total of 271 cases had been identified in the country, with an estimated mortality rate of nearly 50%. Objectives: To describe the clinical, epidemiological, and occupational characteristics of patients with Hantavirus disease in Uruguay during the pre-pandemic (2018-2019) and pandemic (2020-2021) periods. Methods: A descriptive, cross-sectional, observational study was conducted, including all serologically confirmed cases of Hantavirus infection reported to the MPH between 2018 and 2021. Clinical and demographic data were extracted from the mandatory reporting form for zoonotic diseases. Incidence and case fatality rates were calculated, and factors associated with fatal outcomes were analyzed. Results: A total of 58 confirmed cases were identified between 2018 and 2021. Most patients were male (62%), with a mean age of 36.5 years (SD 16). A decline in incidence was observed during 2020-2021, with no significant change in case fatality. Direct rodent exposure was the most frequently associated risk factor. Montevideo and Canelones were the most affected departments. Renal and pulmonary involvement were significantly associated with mortality. Conclusion: Hantavirus remains a relevant public health concern in Uruguay. Although a decrease in incidence was observed during the COVID-19 pandemic years, case fatality rates remained high. The findings underscore the need for sustained surveillance and early recognition, particularly in urbanizing regions.

Promera: a unified model for biomolecular structure prediction, filtering, and design

Generative models have become staple tools for modeling and designing biomolecular structures. However, although these tools have improved in structural prediction accuracy, their ability to filter designed binders---an essential use case---remains insufficient; whereas design methods have focused more on unconstrained binder generation rather than capabilities enabled by controllable design. We introduce Promera, a unified generative model that combines all-atom structure prediction with improved filtering and controllable design. We find that Promera's confidence metrics are more accurate for filtering binders from non-binders for both miniproteins and nanobodies, while its co-folding performance surpasses popular open-source models (OpenFold3-p2, Boltz-2) on therapeutically relevant categories. As a design model, Promera generates binders by predicting masked protein sequences with optional epitope, paratope, and template constraints. Remarkably, our nanobody designs match the in silico success rates from backprop-based techniques (mBER) when evaluated under co-folding confidence filters. We further provide two in silico demonstrations of the the versatile capabilities of our design method: epitope targeting of the Andes hantavirus glycoprotein with VHHs and active state stabilization of the beta-2 andrenergic GPCR. We conclude by proposing a scaling law for co-folding models, suggesting a path for further performance improvement.

Multi-Pathogen Wastewater Surveillance enables Real-Time Targeted Public Health Interventions During the 2025 African Nations Championship Football Tournament

Mass gatherings pose significant public health risks by facilitating the spread of infectious diseases. While wastewater-based surveillance (WBS) has been widely used to monitor pathogens in high-income settings, its use as a practical, multi-pathogen surveillance tool during mass gatherings in low- and middle-income countries remains limited. This study aimed to assess the operational feasibility, epidemiological significance, and public health utility of multi-pathogen WBS during the African Nations Championship (CHAN) football tournament in Uganda. Wastewater surveillance was conducted at Mandela National Stadium during eight match days in August 2025. Moore swabs were deployed at 38 manholes receiving wastewater from different toilet facilities across the stadium to capture representative wastewater samples. Samples were processed using Nanotrap(R) microbiome virus particles to concentrate pathogens, followed by nucleic acid extraction. Samples were analyzed for multiple enteric and respiratory pathogens, including Mpox, using quantitative PCR (qPCR). Descriptive analyses were performed to characterize pathogen detection patterns, positivity rates, and temporal distribution across surveillance sites. A total of 304 wastewater samples were collected and analyzed, of which 259 (85.2%) tested positive for at least one pathogen. Multiple pathogens were consistently detected across sampling days, with enteric pathogens predominating, particularly Shigella spp. (53.6%), Rotavirus A (35.9%) and Enterovirus (32.2%). The mpox virus was also detected in a notable proportion of samples (28.6%) across several sampling days. Respiratory pathogens, including SARS-CoV-2 (11.8%) and Influenza B (8.2%), were identified intermittently at lower frequencies. Pathogen diversity varied over time, with up to eight pathogens detected on a single day, and co-detection of multiple pathogens observed in the majority of positive samples. Cq value distributions further demonstrated variability in detected signal patterns across pathogens. Surveillance findings informed real-time public health interventions, including sanitation reinforcement, intensified hygiene promotion, environmental disinfection, and targeted risk communication, strengthened syndromic surveillance with on-site triage, and targeted environmental health assessments of food handling and wastewater infrastructure. These findings demonstrate the operational feasibility and public health utility of integrating multi-pathogen wastewater-based surveillance into mass-gathering preparedness and response frameworks in low-resource settings. By capturing diverse pathogen signals and informing targeted interventions during the CHAN football tournament, WBS can provide actionable population-level insights that can support outbreak preparedness and response. Scaling WBS within national preparedness systems could strengthen epidemic intelligence, enhance early warning capacity, and support data-driven public health decision-making during future mass gatherings and emerging infectious disease threats.

Detection and genomic characterisation of a novel hantavirus in Australian dolphins

We report the detection of a novel hantavirus in the lung tissue of two diseased Australian dolphins with histopathological changes. Phylogenetic analysis placed this virus within the genus Mobatvirus. This highlights the ability of hantaviruses to infect non-terrestrial mammals and the potential role of marine mammals as one health sentinels.

KESOZI Digital Twin: Physics-Informed Neural Network for Independent Estimation and Prediction of Childhood Diarrheal Disease Burden in Kenya, Somaliland, and Zimbabwe

Childhood diarrheal disease remains a leading cause of morbidity and mortality among children under five years in sub-Saharan Africa, particularly in settings affected by inadequate sanitation, climate variability, malnutrition, and limited healthcare access. Conventional forecasting approaches are often constrained by sparse surveillance data, weak spatial representation, and limited incorporation of mechanistic disease dynamics. This study presents a Physics-Informed Multimodal Artificial Intelligence Digital Twin framework that integrates Physics-Informed Neural Networks, Graph Neural Networks, diffusion-reaction epidemiological modeling, multimodal fusion learning, and Digital Twin simulation to estimate and predict childhood diarrheal disease burden in Kenya, Somaliland, and Zimbabwe. Using public epidemiological, environmental, climate, sanitation, and synthetic proof-of-concept datasets, the framework modeled temporal disease dynamics, spatial transmission, pathogen-attributed burden, and outbreak trajectories while enforcing epidemiological consistency through physics-informed optimization. Results demonstrated robust forecasting performance, enhanced spatial transmission modeling, uncertainty-aware predictions, and realistic outbreak simulations across the three countries. Rotavirus, Shigella, and Cryptosporidium were identified as major contributors to modeled mortality burden, while unsafe water exposure, poor sanitation, malnutrition, and climate-sensitive transmission substantially increased disease risk. Compared with a Bayesian baseline model, the multimodal framework achieved superior nonlinear risk characterization, geospatial learning, and temporal prediction. These findings highlight the potential of scientific machine learning and digital twin systems for infectious disease surveillance, outbreak forecasting, climate-health analytics, and evidence-based public health decision-making in low-resource African settings. Keywords: Physics-Informed Neural Networks, Graph Neural Networks, Digital Twin, Childhood Diarrheal Disease, Epidemiology, Kenya, Somaliland, Zimbabwe, Scientific Machine Learning, Spatial Epidemiology, Multimodal Fusion

Viral reservoir status in small mammals emerges as a predictable life-history trait after correcting for surveillance bias

Small mammals, particularly rodents and shrews, act as primary reservoirs for Arenaviruses and Hantaviruses, zoonotic pathogens causing substantial global morbidity. However, our understanding of reservoir ecology is obscured by biased surveillance efforts, where sampling preferentially targets synanthropic species and high-income regions. It remains unclear whether observed patterns of reservoir competence, such as the association with synanthropy, are biological realities or artefacts of surveillance bias. We conducted a systematic review and data synthesis of global surveillance efforts (1960-2023), creating a harmonised database of over 590,000 recorded small mammals contributing 716,000 assay results. We then integrated this with macroecological trait data and phylogenetics to model reservoir probability using Bayesian phylogenetic dyadic generalised linear mixed models. We identified substantial taxonomic and geographic biases; surveillance is heavily skewed towards the Palearctic and widespread, large-bodied species, while 46% of host genera remain entirely unsampled. Geographically, surveillance intensity correlates strongly with accessibility and night-light intensity rather than host biodiversity. After statistically correcting for historical sampling volume, we demonstrate that reservoir status is a predictable biological trait. A fast pace of life (e.g., early maturity, large litters) is associated with an increased probability of reservoir status, independent of sampling effort. Synanthropy also remains a strong, independent predictor, indicating that commensal species act as genuine biological amplifiers in modified landscapes. Evolutionary analyses reveal a mosaic of broad lineage-level co-divergence punctuated by frequent, reactive host-switching. By projecting these models globally, we demonstrate that anthropogenic disturbance acts as an ecological filter, fundamentally challenging the assumption that pristine tropical ecosystems represent the highest intrinsic hazard for viral emergence.

Prevalence, Genetic Diversity, and Landscape Associations of Orthohantavirus puumalaense in Bank Voles (Clethrionomys glareolus) from Northern Sweden

Puumala hantavirus (PUUV, Orthohantavirus puumalaense) is one of the primary causative agents of haemorrhagic fever with renal syndrome in Europe and is maintained in natural populations of the bank vole (Clethrionomys glareolus, also known as Myodes glareolus). Despite public health relevance, we are only starting to understand the molecular properties and interplay between environmental and ecological factors of the pathogen that explain PUUV infection in bank voles. Here, we investigated PUUV occurrence, genetic structure, and environmental associations in bank voles sampled from two boreal forest areas in northern Sweden, during a complete vole population cycle (2020-2023). In total, 519 voles were screened for PUUV RNA using targeted reverse transcription PCR (RT-PCR). PUUV small (S-) segment RNA was detected in both study areas and observed infection patterns varied with sex, body weight, season and year. Specifically, we detected significant interactions between season and area and between season and body weight, with males showing consistently higher infection probabilities. Infection probability was also higher during periods of increased vole abundance and peaked in 2022. Phylogenetic analysis of partial S segment sequences demonstrated that all detected sequences clustered within the North-Scandinavian PUUV lineage, with no apparent spatial differentiation, indicating limited genetic structuring between the sampling areas. Habitat analyses at multiple spatial scales did not identify significant associations between PUUV occurrence and land-use variables, suggesting that infection dynamics were driven primarily by host demographic and temporal factors rather than broad-scale habitat composition. These findings highlight the importance of host demographics and temporal dynamics in shaping PUUV epidemiology in its reservoir, and provide additional insight into the molecular ecology of PUUV in northern Europe.

Early Prediction of Post-TAVR Left Ventricular Remodeling Using CT-Derived Radiomics and Clinical Variables

Background: Adverse left ventricular (LV) remodeling after transcatheter aortic valve replacement (TAVR) is associated with impaired functional recovery and adverse long-term outcomes, yet imaging-based risk stratification remains limited. Objectives: This study sought to determine whether CT-derived radiomic and geometric myocardial features, integrated with procedural and clinical variables, can predict adverse LV remodeling after TAVR. Methods: We retrospectively analyzed 232 consecutive TAVR recipients with paired pre- and post-procedural LV mass index (LVMI) measurements. Adverse remodeling was defined as a [&ge;]10% increase in LVMI at follow-up. Pre-procedural CT was used to derive three-dimensional LV geometric descriptors, ray-tracing wall-thickness metrics, and myocardial texture radiomic features. Random forest classifiers were developed across six models of sequentially increasing complexity. Results: Adverse LV remodeling occurred in 52 patients (22.4%). Geometry-only model showed limited discrimination (AUC 0.62), whereas wall-thickness radiomics substantially improved performance (AUC 0.84). A multimodal pre-procedural model combining CT radiomics with pre-procedural LVMI, residual valve insufficiency, and prior coronary revascularization achieved an AUC of 0.86 (95% CI 0.73 to 0.98). Addition of post-procedural mean transvalvular gradient further improved discrimination (AUC 0.91, 95% CI 0.81 to 0.98). SHAP analysis identified post-procedural mean aortic gradient and radiomic markers of myocardial heterogeneity as the leading predictors. Conclusions: CT-derived radiomic characterization of myocardial heterogeneity provides incremental prognostic information beyond conventional geometric assessment for identifying patients at risk of adverse LV remodeling after TAVR. These findings extend the role of pre-procedural CT beyond anatomical planning toward quantitative myocardial phenotyping and individualized risk stratification, although prospective validation is required to establish clinical utility.

The AFRIDIARRHEA multimodal fusion framework for Estimating the Burden of Diarrheal Diseases Among Children Under Five in Kenya, Zimbabwe, and Somaliland

Background: Accurate estimation of childhood diarrheal disease burden in Africa remains challenging because of limited surveillance, incomplete mortality data, pathogen-attribution uncertainty, and complex environmental and socioeconomic drivers. This study developed the African Diarrheal Disease Integrated Risk Intelligence and Burden Estimation Architecture (AFRIDIARRHEA), a multimodal fusion framework for estimating under-five diarrheal burden in resource-constrained settings. Methods: AFRIDIARRHEA integrates Bayesian epidemiological modeling, machine learning, temporal forecasting, geospatial analytics, pathogen attribution, environmental intelligence, and uncertainty quantification within a unified framework. Synthetic datasets representing Kenya, Zimbabwe, and Somaliland were used to evaluate mortality, morbidity, hospitalization burden, pathogen-attributed mortality, and predictive performance. Results: The framework identified substantial heterogeneity in disease burden across countries, with Zimbabwe exhibiting the highest modeled mortality and morbidity burden and Somaliland the highest hospitalization burden. Rotavirus and Shigella were the dominant contributors to pathogen-attributed mortality. The multimodal fusion model outperformed the Bayesian baseline and individual component models, achieving improved predictive accuracy, robust uncertainty calibration, and strong agreement with benchmark estimates. Conclusions: AFRIDIARRHEA demonstrates the potential of multimodal fusion modeling for integrated estimation of childhood diarrheal burden, pathogen attribution, and uncertainty in African settings. The framework provides a scalable, transparent, and policy-relevant approach for supporting vaccine prioritization, WASH investments, outbreak preparedness, and child survival programs in data-limited environments. Keywords: Diarrheal disease, burden estimation, multimodal fusion, pathogen attribution, machine learning, uncertainty quantification, Africa

Impact of Angina on Outcome After Percutaneous Coronary Intervention in Patients Undergoing Transcatheter Aortic Valve Implantation: Insights From the NOTION-3 Trial

Circulation, Volume 153, Issue 21, Page 1687-1690, May 26, 2026.

Artificial initiation codons and engineered initiator tRNAs enable N-terminal noncanonical amino acid incorporation in intact cell-free translation systems

Noncanonical amino acid (ncAA) incorporation at the protein N-terminus provides a powerful strategy for installing defined chemical handles while minimizing perturbation of internal protein sequences. However, highly efficient initiation-based ncAA incorporation systems suppress the native methionine pathway by removing methionine or methionyl-tRNA synthetase, limiting their use for proteins containing internal methionine residues. Here, we developed an orthogonal initiation system for selective N-terminal ncAA incorporation into proteins in intact cell-free translation systems. We systematically profiled background initiation from all 64 codons in reconstituted translation systems and identified low-background artificial initiation codons. Engineered initiator tRNAs, termed tRNAIniTx, were then designed to decode selected codons and support ncAA-dependent initiation. The optimized CAC/tRNAIniTx04GUG pair enabled efficient N-terminal incorporation of N-biotinyl-L-phenylalanine without removing methionine or methionyl-tRNA synthetase, reaching over 90% incorporation. The system was further extended to p-azido-L-phenylalanine and to an Escherichia coli extract-based cell-free translation system. Finally, N-terminally biotinylated proteins were directly immobilized on streptavidin biosensors for purification-free biolayer interferometry analysis of computationally designed Brd4BD2 binders. This work establishes a codon-guided orthogonal initiation strategy for N-terminal protein functionalization while preserving the native methionine translation pathway.

An engineered streptavidin condensate platform for chemically inducible control of endogenous proteins in mammalian cells

Inducible control of protein activity with temporal precision is essential for understanding and engineering dynamic cellular behaviors. However, current inducible molecular tools largely rely on overexpression of target proteins, which often disrupts the signaling pathways and cellular functions under investigation. A generalizable method to achieve inducible control of endogenous proteins in mammalian cells remains an unmet need. Here, we present a versatile platform based on engineered streptavidin biomolecular condensates to trap and release endogenously tagged proteins. By tagging endogenous loci with a short streptavidin-binding peptide via CRISPR knock-in, our synthetic streptavidin condensates efficiently partition and functionally inhibit the tagged endogenous proteins. The sequestered cargo protein is rapidly released upon the addition of biotin, restoring protein activity within minutes. We demonstrated the broad applicability of this system by controlling diverse endogenous targets: the anterograde motor KIF5B and retrograde motor DYNC1H1, which regulate intracellular vesicle trafficking, and the Arp2/3 complex subunit ARPC3, which regulates actin dynamics. Furthermore, we developed a dual-inducible system based on rapamycin-dependent condensation of streptavidin, enabling both rapid sequestration and release of endogenous proteins at user-defined time points. Altogether, this engineered streptavidin condensate platform provides a robust, rapid, and scalable approach for manipulating endogenous protein function under physiologically relevant conditions in both basic and translational research.

A tomato fruit blotch viral replicon defines minimal requirements for cell autonomous replication and identifies functional RNA4-encoded movement and silencing suppression activities

Tomato fruit blotch virus (ToFBV) is an emerging multipartite positive-sense RNA virus associated with blotchy symptoms on tomato fruits and classified within the genus Blunervirus (family Kitaviridae). Despite its increasing agricultural relevance, the study of ToFBV has been hindered by the lack of mechanical transmissibility and the difficulty in reproducing infections under controlled conditions. In this work, we report a preliminary step toward the development of the first infectious agroclone system for ToFBV, based on full-length cDNA copies of its four genomic RNAs. We demonstrate that the cloned viral genome is capable of initiating cell autonomous replication in Nicotiana benthamiana, as indicated by the accumulation of negative-sense RNA intermediates in infiltrated tissues. To further validate the system, RNA3 was engineered to express GFP, enabling visualization of infection foci and confirming active viral replication in both N. benthamiana and tomato. Functional assays of RNA4-encoded proteins demonstrated that it encodes a movement protein capable of complementing movement-deficient viral vectors and a putative suppressor of post-transcriptional gene silencing (PTGS). Together, these results establish a versatile reverse genetics platform for ToFBV, providing new insights into the replication and functional organization of blunerviruses and enabling future studies on virus-host interactions, pathogenicity, and control strategies

Breastmilk antibody isotypes differentially protect against neonatal rotavirus infection and modulate the timing and clonal architecture of offspring B cell responses

Mother-to-offspring transfer of antibodies protects newborns during the critical phase of early life, preventing both infection and inflammation. Whether and how pre-existing passive immunity actively shapes immune memory formation in neonates remains unclear. Using a murine neonatal Rotavirus infection model in combination with cross-foster approaches and genetic models, we disentangled the contribution of maternal IgA and IgG to neonatal immune outcomes. While breastmilk antigen specific IgA is responsible for protection from Rotavirus infection, antigen specific IgG delays pup-intrinsic humoral immune induction to after weaning. Importantly, pre-existing maternal immunity delays and constrains, rather than ablates, long term humoral immunity. Together, our data move beyond a binary view of passive immunity as protective versus inhibitory, providing a more nuanced understanding in which breastmilk antibodies actively program the neonatal response for optimal immediate protection and long-term immune education in the growing organism.

Flow-gradient Phenotypes and Functional Recovery After Transcatheter Aortic Valve Implantation for Severe Aortic Stenosis: A COMPARE-TAVI 1 Sub-study

BACKGROUND Patients with severe aortic stenosis (AS) exhibit heterogeneous flow-gradient hemodynamics and ventricular remodeling, which may influence symptomatic, functional, and structural responses to transcatheter aortic valve implantation (TAVI). Thus, we evaluated differences in functional recovery and reverse remodeling after transfemoral TAVI across flow-gradient phenotypes. METHODS In this sub-study of the COMPARE-TAVI 1 trial, 975 patients undergoing transfemoral TAVI were classified as classical low-flow low-gradient (cLFLG, 9.1%), paradoxical low-flow low-gradient (pLFLG, 7.7%), low-flow high-gradient (24.7%), normal-flow low-gradient (NFLG, 13.0%), and normal-flow high-gradient (45.4%). The primary functional outcome was longitudinal change in six-minute walk test distance (6MWTD) from baseline to 1 year follow-up. Secondary endpoints included changes in NYHA functional class and reverse remodeling from baseline to 1 year follow-up along with the incidence and risk of all-cause death and a composite MACE-endpoint. RESULTS Mean 6MWTD increased by 59{+/-}4 meters at 1-month (p=0.000) with no additional improvement at 1-year, but with heterogeneity between groups (p=0.000). Improvements among NFLG, cLFLG and low-flow high-gradient AS were comparable with normal-flow high-gradient AS, while pLFLG AS exhibited significantly increments at 1-year (-28{+/-}15 meters, p=0.007). Patients with NFLG, cLFLG and pLFLG were more symptomatic at baseline (NYHA [&ge;]III: 40.5%, 57.3% and 50.6%, respectively, p=0.000). NYHA improved in all groups at 1-year follow-up (p=0.000), although persistent symptoms at 1-year were most frequent in pLFLG (NYHA [&ge;]II, 38.7%, p=0.012). Reverse remodeling was also comparable between normal-flow high-gradient AS and NFLG, cLFLG, and low-flow high-gradient AS, respectively, but attenuated in pLFLG AS in both unadjusted and adjusted analyses. No differences were observed in the incidence and risk of all-cause death or the composite MACE-endpoint. CONCLUSION TAVI associates with functional recovery across all flow-gradient phenotypes, although with heterogeneous responses. Patients with NFLG showed comparable functional recovery and reverse remodeling at 1-year follow-up compared with normal-flow high-gradient AS, whereas pLFLG demonstrated attenuated benefits across all parameters.

Evaluating the impact of a community-engagement intervention on the uptake of childhood vaccines in England: A synthetic control analysis

Objective: To evaluate the impact of equity-focused community-engagement initiatives on the uptake of five routine childhood vaccinations. Design: Quasi-experimental study within a synthetic control analysis framework. Setting: Primary care in England between April 2019 and March 2025. Childhood vaccination data were obtained from the Cover of Vaccination Evaluated Rapidly (COVER) programme. Intervention: The Health Equity Liverpool Project (HELP) is a community-engagement vaccination initiative implemented between October 2023 and June 2024 across nine sites in central and north Liverpool. Activities were co-developed with local partners and delivered in neighbourhoods with persistently low childhood vaccine coverage. Intervention practices were defined as those located within 1 km of HELP delivery sites (n=19). A weighted combination of non-intervention practices across England (n=5826) was used to construct a synthetic control group. Main outcomes: Quarterly counts of vaccinated children following intervention implementation for first doses of the measles, mumps and rubella vaccine (MMR1 at 24 months and at 5 years), second dose of MMR (MMR2 at 5 years), pneumococcal conjugate vaccine (PCV at 24 months), the 6-in-1 vaccine, covering diphtheria, tetanus, pertussis, polio, haemophilus influenzae type b, and hepatitis B (at 12 months), and the rotavirus vaccine (at 12 months). Results: Following HELP, rotavirus vaccine uptake increased by 10.03% (95% CI 0.37% to 24.63%), corresponding to 120 (95% CI 4 to 295) additional infants vaccinated in the intervention group compared to the synthetic control. Similarly, 6-in-1 vaccine uptake rose by 11.56% (95% CI 2.37% to 25.56% ~143 95% CI 29 to 317 additional children vaccinated. No statistically significant changes were observed for MMR1, MMR2, or PCV. Improvements were short-lived, with uptakes returning to pre-intervention levels after approximately nine months. Conclusions: Community-engagement vaccination interventions may produce a modest short-term improvement in uptake of selected early life vaccines but show limited evidence of benefit for MMR uptake. Our findings suggest that such approaches are unlikely to have a sustained impact without long-term investment, integration into existing immunisation systems and addressing the wider social determinants of health.

A New Right Bundle Branch Block–Like Rhythm Immediately After TAVR

Circulation, Volume 153, Issue 18, Page 1436-1438, May 5, 2026.

Estimated Impacts of Rotavirus Vaccine Recommendation Changes in the U.S.

In January 2026, the United States Department of Health and Human Services downgraded the recommendation for infant immunization with rotavirus vaccine to one of shared clinical decision-making. We use a validated model for the transmission dynamics of rotavirus to predict the magnitude and timing of increases in the number of rotavirus hospitalizations in the US and in representative states given possible decreases in vaccine coverage. Rotavirus hospitalizations are likely to increase within two to three years following a drop in vaccine coverage, resulting in over 200,000 hospitalizations between July 2026-June 2031 if coverage were to drop to 20%. The burden is likely to fall disproportionately on southern states that currently experience higher rates of rotavirus hospitalization.

Characterization of six environmental coli-phages isolated in Astana, Kazakhstan, during the School of Molecular and Theoretical Biology

Bacteriophage (phage) collections are essential resources for studying virus-host interactions in bacterial species. Here, we report six Escherichia coli-infecting phages that expand the Lund Collection of Bacteriophages. These phages were isolated in 2025 within the framework of the School of Molecular and Theoretical Biology for high-school students, from samples collected in Lake Taldykol, Astana, Kazakhstan, using E. coli strains MG1655{Delta}RM and EV36 as hosts. The isolated phages comprise Taldykol (LuPh6), a member of the genus Kagunavirus; Aidakhar (LuPh7) of the genus Phapecoctavirus; Samruk (LuPh8) of the genus Tequintavirus; the T-odd-like phage Baiterek (LuPh9) of the genus Vequintavirus; and two T-even-like phages Tulpar (LuPh10) and Shurale (LuPh11) that belong to the Tequatrovirus genus. This expanded phage collection enhances the toolkit for investigating phage-host interactions and their molecular mechanisms and highlights the use of phage isolation as a component of high school research education.

Ursolic Acid Inhibits Rotavirus Replication Through Modulation Of Lipid Droplet Homeostasis

Rotavirus (RV) replication occurs within viroplasms (VP), which are globular, membrane-less cytosolic inclusions primarily assembled by the viral NSP5 and NSP2 proteins. Among host factors, lipid droplets (LD) are strictly required for VP biogenesis. LD are ubiquitous organelles consisting of a neutral lipid core surrounded by a phospholipid monolayer and associated proteins. Ursolic acid (UA), a pentacyclic triterpenoid widely present in plants and fruits, displays multiple biological activities, including modulation of lipid metabolism, and exhibits antiviral activity against RV, as we have previously demonstrated. Here, we investigated the molecular mechanism underlying the antiviral effect of UA. Using biophysical approaches, we first examined the impact of UA on LD formation, finding that it impairs LD biogenesis, consistent with reduced LD budding from the endoplasmic reticulum. We then employed cell-based assays to assess LD turnover and observed that UA acts as a lipolytic stimulus, leading to a marked reduction in LD abundance. Notably, we found that autophagic pathways contribute to LD degradation in the presence of UA. Finally, molecular dynamics simulations proposed that UA, owing to its intrinsic lipid-partitioning capacity, inserts into the LD phospholipid monolayer, establishing interactions with interdigitated neutral lipids. Together, our results indicate that UA both hampers LD biogenesis and accelerates LD degradation, likely through its association with and destabilization of the LD membrane. This dual effect leads to LD depletion, thereby impairing VP formation and ultimately inhibiting RV replication.

Molecular Identification and Characterization of mobatvirus (Hantaviridae) in Lao PDR

Hantavirids, specifically the members within the genus Orthohantavirus, represent a significant global public health threat, with bat-associated lineages challenging traditional reservoir paradigms. To investigate the genetic diversity of hantavirids in Southeast Asia, we conducted an expanded surveillance program in Lao PDR from May 2023 to October 2025 in bat populations and wild animals from local wet markets. Using molecular screening and deep sequencing to characterize hantavirids from bat populations and wild animals from local wet markets, we identified 20 positive samples across four bat species, recovering coding-complete genomes for multiple novel variants. Phylogenetic analysis confirmed that these viruses form a monophyletic group within Mobatvirus, resolving into two major subclades. The first subclade clustered with Quezon and Robina viruses found in fruit-eating bats. The second subclade further split into two lineages corresponding to Dakrong and Xuan Son viruses, which are associated with trident and leaf-nosed bats, respectively. Despite the strong host specificity observed, the detection of these viruses in a wet market, a critical interface for human-wildlife contact, indicates a potential zoonotic risk. These findings significantly expand the known diversity of mobatviruses in Laos and highlight the urgent need for serological surveillance in at-risk human populations to assess the potential for spillover.

Structure-Guided Design and Dynamic Evaluation of VP4-Targeting siRNAs Against Rotavirus A

Rotavirus is a major cause of severe diarrheal disease in children under the age of five, with reduced vaccine effectiveness in low-resource settings causing substantial morbidity and mortality. In the absence of approved antiviral therapeutics, treatment is largely supportive, urging the need for targeted and precision-based interventions. VP4 protein plays an essential role in viral attachment, entry, and infectivity, making it a suitable target for targeted therapy. In this context, RNA interference is a specific method for inhibiting viral gene expression with its efficacy depending on sequence conservation, target accessibility, and compatibility with the RISC-loading machinery. In the present study, an integrative in silico approach was employed to design and evaluate siRNAs targeting conserved regions of the VP4 gene across six geographically diverse countries. Candidate siRNAs were screened using established design rules and regression-based scoring with off-target filtering. Three optimized siRNAs were further assessed through structural modeling, molecular docking, and molecular dynamics simulations to examine interactions with human Dicer, TRBP, and Argonaute-2. Comparative dynamic analyses identified one siRNA with enhanced structural compatibility, reduced conformational fluctuations, and stable interactions with RISC-loading proteins. These findings provide a rational computational basis for VP4-targeted siRNA development, facilitating experimental validation.

Left Ventricular Geometry Improves Prediction of Sex-Specific Post-TAVR Remodeling in Aortic Stenosis

Background: Women with severe aortic stenosis (AS) are diagnosed later and experience poorer outcomes than men, partly because clinical approaches rely on 2D, valve-centric thresholds derived from male-predominant cohorts that underutilize information from 3D left ventricular (LV) geometry. We hypothesize that a sex-specific computational framework integrating statistical shape analysis (SSA) of pre-TAVR CT with machine learning would improve prediction of 1-year LV mass regression (LVMR). Objective: To develop a computational framework leveraging 3D LV geometry and evaluate whether it improves sex-specific prediction of 1-year LVMR after TAVR. Methods: We studied 339 patients with severe AS who underwent TAVR from 2013 to 2020 and had pre-TAVR CT and 1-year post-TAVR echocardiography. LV geometries were segmented into digital twins, and shape modes predictive of LVMR were extracted using SSA and partial least squares. These modes were incorporated into support vector regression models and compared with conventional echocardiographic predictors, including pre-TAVR LVEF, LVMI, and E/A ratio. Performance was assessed using RMSE and R^2. Results: After one year, 65% of patients showed positive LVMR, with median regression of approximately 10%; regression was significant overall and within each sex (p<0.001) and similar between sexes (p=0.99). Predictive shape modes differed by sex (p<0.01), with women showing more localized variation and men broader geometric gradients. Sex-specific shape modes outperformed general modes and clinical metrics, particularly in women (R^2=0.80, RMSE=0.09 vs. R^2=0.59, RMSE=0.13; clinical-only baseline R^2=0.16, RMSE=0.22). In men, sex-specific modes also performed strongly (R^2=0.89, RMSE=0.08). Conclusion: In severe AS, 3D LV geometry predicts post-TAVR reverse remodeling more accurately than conventional metrics and may improve risk stratification, particularly in women.

A Deep Learning-Based Single-View Echocardiographic Analysis for Prediction of Left Ventricular Outflow Tract Obstruction After Transcatheter Aortic Valve Replacement

Aims: Dynamic left ventricular outflow tract obstruction (LVOTO) is a hemodynamically significant complication following transcatheter aortic valve replacement (TAVR) that remains difficult to predict with conventional transthoracic echocardiography (TTE). We examined whether a deep learning (DL) model developed for LVOTO detection in hypertrophic cardiomyopathy (HCM) could predict post-TAVR LVOTO from pre-TAVR TTE in patients with severe aortic stenosis (AS). Methods and Results: In this retrospective study of 302 consecutive patients undergoing TAVR for severe AS, a pre-trained DL model was applied to pre-TAVR TTE to generate a patient-level DL index of LVOTO (DLi-LVOTO; range 0-100). Post-TAVR LVOTO was defined as a peak pressure gradient [&ge;]30 mmHg on follow-up TTE. Logistic regression and receiver operating characteristic analyses assessed the association and discriminative performance of DLi-LVOTO. Pre-TAVR LVOTO was present in 32 patients (10.6%) and post-TAVR LVOTO in 35 (11.6%). Follow-up TTE was performed at a median of 47 days (IQR 37-63) after TAVR, with the majority of TTE (216 of 302, 71.5%) performed within 2 months. DLi-LVOTO was significantly higher in patients with LVOTO at both pre- and post-TAVR TTE (all p<0.001). In multivariable analysis, DLi-LVOTO remained independently associated with post-TAVR LVOTO even after adjusting for conventional TTE parameters and pre-TAVR LVOTO (adjusted OR 1.29, 95% CI 1.06-1.56 per 10-score increase, p=0.011), with an AUROC of 0.78 (95% CI 0.72-0.85). Among patients without pre-TAVR LVOTO, DLi-LVOTO retained independent predictive value (adjusted OR 1.56, 95% CI 1.19-2.06, p=0.001; AUROC 0.84, 95% CI 0.77-0.91). Conclusion: A DL model originally trained in HCM patients independently predicts post-TAVR LVOTO from pre-TAVR TTE, including in patients without pre-existing LVOTO, suggesting it captures hemodynamic features beyond conventional echocardiographic assessment.

M1 macrophage-derived exosomal miR-155-5p exacerbates aortic dissection via SMAD5-Mediated regulation of vascular smooth muscle cell phenotype.

Aortic dissection (AD) is a life-threatening cardiovascular emergency characterized by acute aortic wall injury and high mortality, yet effective pharmacological therapies remain limited. Macrophage infiltration and vascular smooth muscle cell (VSMC) phenotypic switching from contractile to synthetic states are central to AD pathogenesis, but the mechanisms mediating intercellular communication between macrophages and VSMCs are incompletely understood. Emerging evidence suggests that exosomes can transfer bioactive miRNAs between cells; however, whether M1 macrophage-derived exosomes promote AD progression through specific miRNA delivery and whether they can be engineered for therapeutic intervention have not been clearly defined. In this study, we demonstrate that M1 macrophage-derived exosomes deliver miR-155-5p to VSMCs, where it targets and suppresses SMAD5, activates the RHOA/ROCK pathway, and drives contractile-to-synthetic phenotypic switching, thereby accelerating AD progression. Through comprehensive physicochemical characterization, including TEM, NTA, Zeta potential, and stability assays, we show that M0 macrophage-derived exosomes can be successfully engineered to load Antago-miR-155-5p via electroporation with favorable encapsulation efficiency and colloidal stability. In a BAPN-induced mouse model of AD, intravenous administration of Antago-miR-155-5p-loaded M0-Exos significantly improved survival, reduced AD incidence and aortic dilation, and restored VSMC contractile markers. Biodistribution studies using DiR and CY5 labeling confirmed efficient accumulation of these engineered exosomes in the injured aorta, while macrophage depletion and rescue experiments validated the pathogenic role of M1-derived exosomes. These findings identify a novel M1 exosome-miR-155-5p-SMAD5/RHOA/ROCK signaling axis in AD and establish engineered M0 macrophage-derived exosomes as a promising bioactive material platform for targeted miRNA therapy in aortic dissection.

Perioperative management of cardiac implantable electronic devices: a state of the art narrative review.

BACKGROUND AND OBJECTIVE: Cardiac implantable electronic devices (CIEDs) offer lifesaving treatment in patients with significant bradycardia or who at risk for malignant arrhythmias. As the implantation and sophistication of these devices continue to increase, it is imperative for perioperative clinicians to be knowledgeable in their management. While societies have produced documents for guidance, they differ in some recommendations. Furthermore, many societies have released updated or new guidance within the last several years. This review aims to summarize the latest types of CIEDs and perioperative management recommendations. METHODS: A search in PubMed was performed with a focus on locating guidelines, consensus statements, and practice advisories from major national and international organizations from January 2020 to September 2025. Secondary searches were subsequently conducted based on the content of the initial papers. Only papers in the English language were considered. KEY CONTENT AND FINDINGS: Five guidance documents were retrieved based on the search. Some had endorsement from numerous groups, but notable organizations included: (I) the American Society of Anesthesiologists (ASA); (II) European Heart Rhythm Association (EHRA)/Heart Rhythm Society; (III) British Heart Rhythm Society; (IV) American Heart Association (AHA)/American College of Cardiology (ACC); and (V) AHA. CONCLUSIONS: Familiarity with these devices and how to manage them perioperatively is necessary to safely care for these patients in the perioperative period. Although there are similarities between perioperative management strategies, differences exist between recommendations from various societies. Furthermore, the scope of each of these documents differs, with some being more detailed and others lacking details. In the absence of a universal protocol, clinicians could benefit from being familiar with guidance from each of these organizations, taking into consideration the strengths and limitations of the documents, and applying the recommendation that is most relevant and specific to their patient.

Global and Chinese co-occurrence patterns association with socio-demographic index for congenital heart disease and Down syndrome, 1990-2021.

BACKGROUND: Congenital heart disease (CHD) and Down syndrome (DS) are two major birth defects that severely impact the quality of life and survival of affected children. This study aimed to systematically assess the disease burden, spatial co-occurrence patterns, and associations with the Socio-demographic Index (SDI) for CHD and DS globally and in China from 1990 to 2021. METHODS: Data on disability-adjusted life years (DALYs) and prevalence for CHD and DS were extracted from the Global Burden of Disease Study 2021 (GBD 2021) for 204 countries and territories. Temporal trends were evaluated using Joinpoint regression analysis. Disease burden levels were categorized into quartiles to generate co-occurrence maps and year-SDI heatmaps. RESULTS: From 1990 to 2021, global age-standardized DALY rates for CHD and DS exhibited an overall downward trend [estimated annual percentage change (EAPC) =-1.59% and -0.14%, respectively]. China experienced substantially larger declines [CHD, average annual percentage change (AAPC) =-5.03%; DS, AAPC =-3.62%], yet prevalent cases continued to increase, reaching 2.35 million and 1.61 million in 2021, respectively. Globally, the concordant co-occurrence pattern for prevalence predominated (41.66% of countries) and remained persistently stratified by SDI: CHD-dominant in low-SDI regions, DS-dominant in high-SDI regions, and concordant across other SDI strata. In China, the co-occurrence pattern for DALYs shifted from high-high concordant in 1990 to low-low concordant in 2021, while the prevalence pattern transitioned from DS-dominant to concordant in 2017. CONCLUSIONS: Over the past 32 years, both global and China levels have seen declines in the DALY burden of CHD and DS, with China achieving a more pronounced reduction. However, the rising prevalence burden highlights that life-course health management remains a weak link. The concordant co-occurrence pattern in prevalence burden suggests that prevention and control strategies for CHD and DS should adopt an integrated approach, addressing both common patterns and unique characteristics of each condition to further improve overall health outcomes.

Phenotyping patients with a low-flow, low-gradient aortic stenosis and a preserved ejection fraction undergoing TAVI.

BACKGROUND: In patients undergoing transcatheter aortic valve implantation (TAVI), a low flow, low-gradient (LF-LG) is often caused by reduced left ventricular ejection fraction (LVEF). However, characteristics and causes of worse outcomes in patients with a paradoxical LF-LG with preserved ejection fraction (pEF) are less well understood. OBJECTIVES: To phenotype patients with LF-LG pEF, based on unsupervised echocardiographic clustering. METHODS: We included 827 patients undergoing TAVI in a tertiary medical centre in the Netherlands. LF-LG pEF was defined as LVEF≥50%, Aortic Valve Area: ≤ 1.0 cm2, mean gradient <40 mmHg, and a stroke volume index <35ml/m2. K-means clustering was performed using principal component analysis on 323 AI-assessed echocardiographic parameters (US2.ai). Validation was performed both internal (n=405) and external (n=173) (TUMunich, Germany). RESULTS: From 827 patients undergoing TAVI, 216 patients (35%) had a LF-LG pEF status (mean age of 78.8 (± 7.19) years, 57.9% female), in which two clusters were identified. Patients in cluster 1 (n=77) were characterized by distinct echocardiographic features related to HFpEF, including larger left (LA) and right atrial dimensions (as shown by volume, area, length, width and circumference), and impaired left ventricular global longitudinal strain and a reduced LA reservoir strain (in different echocardiographic views). Also, they were older, and had higher rates of atrial fibrillation (AF) and heart failure (HF), and higher HFpEF scores (49.4% H2FPEF score ≥6 and 71.4% HFA-pEFF score ≥5), compared to cluster 2 (n=139). Cluster 1 had a higher risk of 1-and 5-year cardiovascular mortality and HF-hospitalisations, similar to classical LF-LG patients. Internal and external validation revealed similar results. CONCLUSION: One-third of TAVI patients with LF-LG aortic stenosis have a typical HFpEF/AF-phenotype and a poor prognosis. They may benefit from guideline-directed medical therapies for patients with HFpEF, including SGLT-2 inhibitors and MRA.

Flow Normalization and Left Ventricular Ejection Fraction Improvement After Transcatheter Aortic Valve Replacement Across Low-Flow Aortic Stenosis Phenotypes.

BACKGROUND: Low-flow aortic stenosis (AS) is a high-risk subgroup of severe AS occurring with either reduced or preserved left ventricular ejection fraction (LVEF). Flow normalization (measured by stroke volume index [SVi]) and LVEF improvement are associated with improved outcomes after transcatheter aortic valve replacement (TAVR), yet whether these changes occur similarly across subtypes and concordantly remains unclear. OBJECTIVES: To evaluate flow normalization and LVEF improvement across low-flow AS subtypes, assess concordance, and identify predictors. METHODS: Patients with severe low-flow AS (SVi <35 mL/m²; aortic valve area ≤1 cm²) who underwent TAVR with 1-year echocardiographic follow-up were classified as low-flow, low-gradient (LFLG) AS with reduced LVEF, LFLG AS with preserved LVEF, or low-flow, high-gradient (LFHG) AS. Flow normalization and LVEF improvement ≥5% at 1 year were assessed. RESULTS: Among 174 patients (mean age 79 ± 8 years; 36% female), 18.4% had LFLG with reduced LVEF, 60.9% LFLG with preserved LVEF, and 20.7% LFHG. Flow normalization occurred in 38.5% overall at similar rates across phenotypes respectively (40.6%, 34.9%, and 47.2%; p=0.407). LVEF improvement ≥5% occurred in 35.6% overall but was most frequent in LFLG with reduced LVEF (65.6%) versus preserved LVEF (29.2%) and LFHG (30.6%; p<0.001). Only 16% showed concordant improvement; 40.8% showed neither. Lower baseline LVEF independently predicted LVEF improvement; no independent predictors of flow normalization were identified. CONCLUSIONS: Flow normalization after TAVR occurred at similar rates across low-flow AS subtypes, while LVEF improvement was most frequent in LFLG AS with reduced LVEF. These changes frequently occurred discordantly, though prognostic implications remain unclear.

Cardiovascular and Clinical Manifestations of Marfan Syndrome and Other Inherited Connective Tissue Disorders with Coexisting Genetic Variants.

Marfan syndrome (MS), Loeys-Dietz syndrome (LDS), Beals-Hecht syndrome (BHS), Ehlers-Danlos syndrome (EDS), and individuals with undifferentiated connective tissue disease (UCTD) exhibit phenotypic overlap, suggesting a likelihood of genotypic coexistence. Our objective was to evaluate genetic variants (GVs), encoding 174 genes related to aortopathies, cardiomyopathies, arrhythmias, structural heart disease, and hypercholesterolemia, and their relationship to clinical and cardiovascular damage in these syndromes. This was a prospective study in Mexican patients with MS, LDS, EDS, BHS, and UCTD. One hundred and seventy-four genes related to hereditary diseases were studied using next-generation sequencing targeting coding regions. Of the 136 patients, 25 were identified with the recurrent and coexisting GV of MYBPC3. In the MS group, in addition to the presence of GV in FBN1, eight patients had GV in MYBPC3, six in FBN2, and five in COL3A1 and COL5A1. In the LDS group, in addition to GV in TGFBR1, TGFBR2, and SMAD3, four patients presented with GV in MYBPC3 and two with FBN2. In the BHS group, in addition to FBN2, two patients had GV in MYBPC3 and one with TGFBR2. In the UCTD group, nine patients had GV in MYBPC3 and two in COL5A1 and COL5A2. All syndromes coexisted with GV in genes related to arrhythmias, sarcomeres, and hypercholesterolemia. In EDS, coexistence with several sarcomere proteins was found.

Computed Tomography Sizing Algorithm for Transcatheter Aortic Valve Implantation in Bicuspid valve: Results from the CASPER Registry.

BACKGROUND: Bicuspid aortic valve (BAV) stenosis presents specific challenges for transcatheter aortic valve implantation (TAVI). Several transcatheter heart valve (THV) sizing strategies have been proposed. The CASPER algorithm indicates whether and how much to downsize the THV based on anatomical characteristics. The aim of this study is to prospectively assess the CASPER algorithm in a multicenter cohort of BAV patients treated with a self-expandable THV. METHODS: Consecutive BAV patients undergoing TAVI were prospectively enrolled across six centers from 2022 to 2024. Pre-procedural computed tomography (MSCT) was used for THV sizing according to CASPER. Procedural features and clinical outcomes at 30 days and 1 year were recorded. Patients were compared based on whether CASPER recommended downsizing. RESULTS: A total of 101 patients were included, and THV downsizing was advised in 39 cases (34.6%). The mean post-TAVI transvalvular gradient was 8.3±4.3mmHg, and moderate paravalvular leak occurred in six patients (6%). No deaths or major structural complications were reported, while the 30-day permanent pacemaker implantation rate was 25%. No significant differences between downsizing and non-downsizing groups were observed regarding procedural characteristics, hemodynamic performance, or clinical outcomes. Post-procedural MSCT (available in 84/101 patients, 83%) showed comparable THV eccentricity in both groups. CONCLUSIONS: The CASPER algorithm offers a practical and reproducible sizing strategy for use in BAV anatomy and appears to support appropriate THV expansion while identifying cases requiring downsizing. However, in the absence of a comparator group, these findings should be considered hypothesis-generating and require validation in prospective comparative or randomized studies. NCT REGISTRATION NUMBER: NCT04817735.

Evaluation of a multi-component intervention aimed at reducing time to treatment in transcatheter aortic valve implantation: Protocol for a cluster randomized controlled trial.

BACKGROUND: Transcatheter aortic valve implantation (TAVI) has become widely used to treat symptomatic patients with aortic stenosis (AS), but increasing demand has led to treatment delays, which are associated with increased morbi-mortality. AIMS: To reduce time to treatment in patients awaiting a TAVI, we constructed a multi-component intervention which includes (1) a paper- and internet-based component aimed at improving AS and TAVI knowledge and (2) an organizational component aimed at TAVI centres to improve scheduling of examinations and procedures. Their effectiveness, cost-effectiveness and implementation were evaluated in a cluster randomized controlled trial (cRCT). METHODS: The cRCT (NCT_05237804) used a factorial design to evaluate the two components of the intervention, alone and together. The cluster was the TAVI centre. As patients may be referred to TAVI centres by regional hospitals, participating regional hospitals were included in the cluster of their referral TAVI centre. Clusters were allocated to one of four treatment groups after stratification on annual number of TAVI procedures, presence of a coordinating nurse and participation of a regional hospital. Patients aged ≥18 years with symptomatic AS and a TAVI indication were included in the study. The expected sample size was 798 patients. The primary outcome is the percentage of patients treated within 2 months of the TAVI indication. Secondary outcomes are time to treatment, mortality, quality of life, knowledge regarding TAVI and AS, medication compliance and incremental cost-effectiveness ratios. Implementation measures include dose, fidelity, adaptations, reached population, satisfaction and acceptability. TRIAL STATUS: Overall, 828 patients have been enrolled. Data had not been analysed at the time the protocol was submitted.

Timely hospital discharge in TAVI patients: towards a patient-centered care pathway.

Transcatheter aortic valve implantation (TAVI) has evolved into the dominant therapeutic option for severe aortic stenosis, with procedural refinements and expanding indications increasingly supporting shorter post-procedural monitoring and discharge. International evidence from randomized trials, multi-center registries, and consensus guidelines demonstrates that reduced length of stay (LOS), including next-day or early discharge, can be safely achieved in selected patients when supported by standardized workflows, careful patient selection, and structured outpatient monitoring. In Germany, LOS remains among the longest in Europe, driven by structural, reimbursement, and cultural barriers. With increasing TAVI volumes, demographic pressures, and workforce constraints, these barriers inhibit health system sustainability, procedural capacity, and patient experience. Early discharge below the currently defined thresholds often results in financial disadvantages under the Diagnosis-Related Group (DRG) reimbursement mechanism, thereby disincentivizing standardized adoption and pathway innovation. Yet, a reduction in LOS would yield meaningful system-level advantages, including increased procedural capacity, improved resource allocation, and lower post-procedural bed occupancy costs, all leading to better and more efficient patient pathways. This narrative, practice- and policy-oriented critical perspective evaluates the current German landscape and outlines pragmatic strategies to enable safe early discharge. It synthesizes relevant international evidence, identifies system-level barriers specific to Germany, and proposes a structured roadmap including: (1) standardized eligibility criteria, (2) protocolized peri- and post-procedural pathways, (3) pilot implementation in carefully selected centers with outcome reporting, and (4) reimbursement realignment to avoid wrong financial incentives. Supported by professional medical societies and aligned with international standards, early discharge pathways could enhance efficiency and improve patient-centered care, offering Germany a timely opportunity to modernize TAVI experience and delivery.

Cardiac damage stages at follow-up and subsequent clinical outcomes in patients with severe aortic stenosis.

Data on the impact of cardiac damage based on follow-up echocardiography at 1 year in patients with severe aortic stenosis (AS) are insufficient. The current study included 1991 patients with severe AS who underwent follow-up echocardiography at 1 year after the initial AVR strategy (n = 1211) and conservative management (n = 780) in the CURRENT AS Registry-2. In the initial AVR group, the higher adjusted risk for stage 1, 2, and 3 or 4 relative to stage 0 was not significant for the primary outcome (a composite of all-cause death or hospitalization for heart failure) (hazard ratio [HR] = 0.51, 95% confidence interval [CI] = 0.25-1.04; HR = 0.71, 95% CI = 0.39-1.29; and HR = 0.57, 95% CI = 0.22-1.48). Meanwhile, in the conservative management group, it was significant for the primary outcome (HR = 2.33, 95% CI = 0.99-5.52; HR = 2.89, 95% CI = 1.30-6.40; and HR = 6.44, 95% CI = 2.62-15). A significant association was observed between the initial treatment strategies and effects of cardiac damage stages at 1 year on the primary outcome (P interaction = 0.003). Cardiac damage stages based on follow-up echocardiography at 1 year were useful for prognostic stratification in patients who received conservative management, but not in those who underwent initial AVR. UMINID: UMIN000034169.

Compound Heterozygous SLC12A3 Variants in Gitelman Syndrome Presenting With Ventricular Fibrillation and Cardiac Arrest.

BACKGROUND: Gitelman syndrome (GS) is an autosomal recessive salt-losing tubulopathy characterized by hypokalemia, hypomagnesemia, and metabolic alkalosis. Although often considered benign, GS may predispose to malignant ventricular arrhythmias. CASE PRESENTATION: A 41-year-old male presented with cardiac arrest due to ventricular fibrillation (VF). Severe hypokalemia (1.6 mmol/L) and hypomagnesemia were identified, with no structural heart disease on imaging. Recurrent VF persisted despite antiarrhythmic therapy and resolved only after electrolyte correction. Genetic testing revealed pathogenic SLC12A3 variants. CONCLUSION: GS can cause an electrical storm in structurally normal hearts; prompt recognition and electrolyte management are essential.

Anomalous left circumflex artery obstruction after transcatheter aortic valve-in-valve placement.

Coronary obstruction (CO) after transcatheter aortic valve replacement (TAVR) valve-in-valve (VIV) is a rare, albeit severe, complication. Pre-procedural planning with Cardiac CT Angiography (CCTA) is crucial for identifying risk factors. However, the incidence of CO after TAVR over the past decade remains 0.8%1.

Multiparametric cardiac MRI in the diagnosis of transplant rejection in patients after orthotopic heart transplantation.

OBJECTIVES: Heart transplantation (HTx) remains the main long-term treatment for end-stage heart failure. Due to the high risk of acute cellular rejection (ACR), HTx recipients undergo multiple endomyocardial biopsies to monitor graft tolerance. This prospective, single-center study evaluated quantitative magnetic resonance imaging (MRI), particularly T1- and T2-mapping, as noninvasive tools for rejection monitoring. MATERIALS AND METHODS: The study included 17 adult HTx recipients (men, 88%; age, 53 ± 13 years) enrolled within 1 month after transplantation and 10 controls without structural heart disease. Htx recipients underwent 5 to 6 serial cardiac MRI scans with T1- and T2-mapping, coinciding with routine endomyocardial biopsies, to correlate imaging findings with histopathological evidence of ACR. Cardiac MRI relaxation times were compared based on the biopsy evidence of ACR. RESULTS: During the 6-month follow-up, HTx recipients underwent 87 cardiac MRI scans, with 13 ACR episodes reported in 9 patients (53%). They had significantly higher T1- and T2-mapping values than controls. Cardiac biomarkers, NT-proBNP and troponin, did not differ between patients with or without ACR. Global T2-mapping and regional abnormalities, particularly in septal segments, identified rejection, with a cutoff of 51 ms showing high specificity (92%) but modest sensitivity (46%) for ACR. In contrast, T1-mapping values were elevated only in selected myocardial segments, showing a consistent inferoseptal pattern, without differences in global myocardial T1 values between ACR and non-ACR patients, limiting their usefulness for identifying ACR. CONCLUSION: Noninvasive cardiac MRI, particularly T2-mapping, may help assess the risk of cardiac graft rejection and complement biopsy-based surveillance in HTx recipients. KEY POINTS: Question Monitoring acute cellular rejection (ACR) after heart transplantation is crucial, but whether noninvasive imaging can safely reduce the number of endomyocardial biopsies is still debatable. Findings Multiparametric cardiac magnetic resonance combining T1- and T2-mapping may improve diagnostic assessment and support more targeted use of invasive endomyocardial biopsies. Clinical relevance T2-mapping appears to be a promising noninvasive biomarker for detecting ACR in heart transplant recipients within the 6 months post-surgery, whereas T1-mapping shows regional differences but lacks consistency across the myocardium, having limited diagnostic utility in detecting acute inflammatory changes.

Uncertainty-aware classification and triage of structural heart disease using electrocardiography and echocardiography metrics.

Machine learning methods provide a methodological innovation that can help screen for cardiovascular disease through noninvasive and readily available measurement modalities. Recent investments in using electrocardiogram (ECG) data to screen for structural heart disease (SHD) are one example, where ECGs provide a low-cost, available modality for screening. This has led to the EchoNext dataset, a paired ECG-echocardiogram data repository for testing new methods of SHD detection. However, relatively few studies have investigated how more probabilistic classification through Bayesian inference may improve uncertainty quantification in this setting. Moreover, few studies have considered how triage systems can be developed to alleviate healthcare bottlenecks, such as the review of data from underserved, rural clinics by expert sonographers for SHD assessment. In this study, we leverage existing ECG-echocardiogram data to compare frequentist and Bayesian neural network classifiers. We show that the Bayesian approach is comparable or better than frequentist methods in SHD classification, and that they have a more robust uncertainty quantification attached to them. We provide an example of how this uncertainty-aware classification scheme can be used for screening SHD, providing a proof-of-concept for how machine learning can help with triage in getting individuals expert sonographer input when SHD is highly likely or measurements are highly uncertain.

Prognostic value of early haemodynamic valve deterioration after TAVI.

BACKGROUND: Early haemodynamic valve deterioration (HVD) was associated with worse clinical outcomes and bioprosthetic durability after transcatheter aortic valve implantation (TAVI) in a single-centre study. AIMS: The aim of this study was to evaluate the incidence, predictors, and prognostic impact of early HVD in a large-scale TAVI population. METHODS: We analysed the data from an international, multicentre registry including consecutive patients from 16 centres undergoing TAVI. Early HVD was defined as an increase of at least 10 mmHg in the mean transaortic gradient on echocardiography performed within the first three months after TAVI, compared with the discharge echocardiography. The primary endpoint was the valve-related long-term clinical efficacy according to the Valve Academic Research Consortium 3. RESULTS: Among 7,392 patients, early HVD was observed in 231 patients (3.1%). Body mass index (adjusted odds ratio [aOR] per 5 kg/m2 increase 1.15, 95% confidence interval [CI]: 1.02-1.30), prosthesis size <26 mm (aOR 1.96, 95% CI: 1.43-2.70), valve-in-valve procedure (aOR 2.76, 95% CI: 1.83-4.08), and the absence of anticoagulation at discharge (aOR 1.64, 95% CI: 1.22-2.22) were independent predictors of early HVD. After a median follow-up of 4 years (interquartile range 2-5), early HVD was independently associated with a lower valve-related long-term clinical efficacy (subdistribution hazard ratio [sHR] 0.42, 95% CI: 0.32-0.56), and a higher risk of stroke (sHR 2.32, 95% CI: 1.51-3.57), stage 2 or 3 (sHR 2.74, 95% CI: 2.10-3.57) or stage 3 bioprosthetic valve dysfunction (sHR 3.53, 95% CI: 2.15-5.79), and bioprosthetic valve failure (sHR 3.04, 95% CI: 2.06-4.52). Consistent findings were observed in a propensity score-matched cohort and in different sensitivity analyses. CONCLUSIONS: Early HVD was observed in 3.1% of patients and was associated with adverse clinical and haemodynamic outcomes after TAVI. These findings validate the clinical relevance of detecting early HVD and the necessity for further research to guide optimal management of these patients.

Early rehospitalisation after transcatheter aortic valve implantation: incidence, predictors and impact on mortality.

BACKGROUND: Early rehospitalisation after transcatheter aortic valve implantation (TAVI) is frequently required but data regarding its prevalence, aetiology, predictors and prognostic relevance are limited. METHODS: We retrospectively analysed consecutive patients undergoing TAVI between August 2012 and October 2025. Early rehospitalisation was defined as any admission within 30 days from the index hospitalisation. Data regarding rehospitalisation causes, predictors, outcomes and impact on mortality were collected. Associations were evaluated using univariable and multivariable logistic and Cox regression models and Kaplan-Meier curve analyses. RESULTS: A total of 1347 patients (43.8% women, mean age 81±6 years) were included. Early rehospitalisation was required in 131 (9.7%), most frequently due to infection (22.9%), heart failure (HF 19.8%) and bradycardia (9.9%). Independent predictors of rehospitalisation for infection were chronic HF (OR 2.60, 95% CI 1.02 to 6.59; p=0.045), chronic obstructive pulmonary disease (OR 3.18, 95% CI 1.27 to 7.96; p=0.013) and contrast dye volume (OR 1.25 per 25 mL increase, 95% CI 1.09 to 1.44; p=0.002). Rehospitalisation for decompensated HF was significantly associated with chronic HF (OR 3.82, 95% CI 1.24 to 11.81; p=0.020), paravalvular leak ≥mild (OR 5.05, 95% CI 1.50 to 16.98; p=0.009) and reduced postprocedural ejection fraction (OR 3.85, 95% CI 1.20 to 12.50; p=0.022). Conduction abnormalities at discharge predicted rehospitalisation for bradycardia requiring pacemaker implantation (OR 4.65, 95% CI 1.39 to 15.57; p=0.013). Early (≤2 days) discharge was not associated with an increased risk of rehospitalisation (27.7% vs 20.3%, p=0.073). 1-year all-cause mortality was higher for the early rehospitalisation group after multivariable adjustment (HR 3.03, 95% CI 1.90 to 4.86; p<0.001). CONCLUSIONS: Nearly one-tenth of patients were readmitted after index hospitalisation. The most prevalent causes were infection, HF and bradycardia. Modifiable risk factors were contrast dye volume, ≥mild paravalvular leaks and discharge conduction abnormalities. Early discharge did not predict rehospitalisation. Mortality risk at 1 year was three times higher in patients requiring early rehospitalisation.

Simplified transcatheter aortic valve implantation. An expert consensus of the Association of CardioVascular Interventions of Polish Cardiac Society.

Transcatheter aortic valve implantation (TAVI) has become the guideline-supported treatment of choice for older or higher-risk patients with severe aortic stenosis. With expanding indications the community has faced substantial challenges in meeting the growing demand for TAVI procedures. This led to a transition towards simplification of the procedure and shortening of the hospital stay, defined together as the "fast-track", "minimalist" or "simplified" TAVI. Current data suggest that such approach can be adopted without compromising patients' safety if certain procedural standards are maintained. This document aims at providing a practical guide by highlighting best practices of simplified TAVI with particular focus on the specific features of Polish health care system.

Regional Anesthesia Approaches for Transcatheter Aortic Valve Implantation: When and Where Does It Add Value? A Narrative Review of Techniques by Access Route.

Transcatheter aortic valve implantation (TAVI) is increasingly performed using local infiltration (LI) with monitored anesthesia care (MAC) as outcomes are equivalent to those of general anesthesia. The key clinical question is when regional anesthesia (RA) offers meaningful benefits beyond LI-MAC across different access routes. The objectives were to identify access-specific situations in which RA may provide clinical advantages over LI-MAC and to summarize implications for patient comfort, hemodynamics, and procedural safety. A narrative review of studies retrieved from PubMed (MEDLINE), Embase, and the Cochrane Library through September 2025 was performed. Eligible studies included case reports, randomized trials, observational cohort studies, and reviews describing RA techniques used for TAVI. Data were extracted on access route, RA technique, outcomes, and complications. For transfemoral (TF) TAVI, evidence supports LI-MAC as the default strategy, and RA has not been shown to improve major clinical outcomes. Selective RA adjuncts may enhance intraprocedural comfort: Ilioinguinal-iliohypogastric block reduces sedative and analgesic requirements, and fascia iliaca block may reduce opioid requirements in selected settings. For non-TF access, particularly subclavian or axillary and carotid routes, RA may preserve spontaneous ventilation, stabilize hemodynamics, and enable continuous neurologic monitoring. In transapical and transaortic procedures, thoracic epidural analgesia shows strong observational support for improved pulmonary and clinical outcomes, with paravertebral and plane blocks serving as neuraxial-sparing alternatives. RA should be used selectively when it enhances analgesia, reduces sedative requirements, or confers physiological advantages, particularly for non-TF access. Further studies directly comparing RA with LI-MAC are needed to clarify its access-specific role.

Immune Aging is an Independent Risk Factor for Cardiovascular Disease.

Cardiovascular disease remains the leading cause of mortality worldwide, yet substantial risk persists beyond traditional clinical and metabolic predictors. The immune system is a key mediator of this residual risk, but clinically scalable metrics of immune state are lacking. Here, we established the clinical and prognostic relevance of IMM-AGE, a system-level metric of immune aging derived from immune cell correlation structure. We developeda transcriptomic gene-ratio signature and optimized reduced-marker flow cytometry panels that accurately preserve IMM-AGE across blood fractions, platforms and cohorts. Applying these clinic-ready implementations across population-based and disease-specific datasets, we show that elevated IMM-AGE is consistently associated with cardiovascular phenotypes and disease. We leverage the UK biobank to show that incorporation of IMM-AGE into the PREVENT 10-year risk equation increase accuracy of risk stratification. We also show that in elderly patients undergoing transcatheter aortic valve replacement, baseline IMM-AGE independently predicted early maladaptive cardiac remodeling and one-year mortality. Finally, in the Baseline Health Study, a large longitudinal cohort, IMM-AGE stratified cardiovascular event risk among individuals with otherwise similar clinical profiles. Together, these findings establish immune aging as a transferable, biologically grounded risk dimension and support IMM-AGE as a practical tool for precision cardiovascular risk assessment.

Prognostic impact of neurologic events after transcatheter aortic valve implantation according to their timing.

BACKGROUND: Neurological events (NE) remain a feared complication after transcatheter aortic valve implantation (TAVI). The relationship between NE timing and prognosis remains uncertain. This study aims to assess the impact of NE on mortality according to the NE timing. METHODS: Patients undergoing TAVI at 18 European centers between 2007 and 2022, included in the Transfusion Requirements in Transcatheter Aortic Valve Implantation (NCT03740425) registry, were stratified according to the timing of NE. NE were defined as periprocedural (≤30 days) or non-periprocedural (>30 days) according to the Valvular Academic Research Consortium-3 criteria. The primary endpoint was two-year all-cause mortality as assessed by means of restricted mean survival time. RESULTS: Among 10079 patients undergoing TAVI, 263 (2.6%) experienced a NE over a median follow-up of 20.6 (IQR: 9.8-38.3) months after TAVI. A total of 171 NE (65.0%) were periprocedural and 92 (35.0%) non-periprocedural. Fatal stroke accounted for 6.4% of periprocedural NE and 40.2% of non-periprocedural NE. Median time from NE to death was 20.4 (9.4-38.1) months. Both types of NE were associated with significantly reduced two-year survival time: -164.7 days for periprocedural NE and -360.5 for non-periprocedural NE (p for trend: 0.029). The adverse prognostic impact of NE increased progressively over time. CONCLUSIONS: In this large multicenter registry, all types of NE after TAVI were associated with reduced mid-term survival. Later-occurring NE had the greatest detrimental effect on life expectancy, showing a significant temporal gradient across NE categories. Further studies are warranted to evaluate preventive strategies and long-term monitoring approaches.

Prognostic value of the endothelial activation and stress index (EASIX) for in-hospital and overall mortality in patients undergoing transcatheter aortic valve implantation.

BACKGROUND: Patients undergoing transcatheter aortic valve implantation (TAVI) are typically elderly with multiple comorbidities, making accurate preprocedural risk stratification essential. The Endothelial Activation and Stress Index (EASIX), calculated from lactate dehydrogenase, creatinine, and platelet count, reflects endothelial injury and systemic stress, however, its incremental prognostic value beyond established risk markers in TAVI populations has not been fully characterized.This study aimed to evaluate the association between preprocedural EASIX and both in-hospital and overall mortality after TAVI. METHODS: This retrospective cohort study included 742 consecutive patients who underwent TAVI for symptomatic severe aortic stenosis between January 2020 and January 2025. EASIX was calculated from laboratory parameters obtained 48-72 h before the procedure, and patients were stratified into tertiles. The primary outcome was overall mortality; in-hospital mortality was the secondary outcome. Cox proportional hazards and logistic regression analyses identified independent predictors. Incremental prognostic value was evaluated using Harrell's C-index, continuous Net Reclassification Improvement (NRI), and Integrated Discrimination Improvement (IDI), and survival was assessed by Kaplan-Meier analysis. RESULTS: The median age was 78 years (IQR 74-83), and 56.2% were female. During a median follow-up of 345 days, overall mortality occurred in 119 patients (16.0%) and in-hospital mortality in 63 (8.5%). Patients in the highest EASIX tertile had higher in-hospital (15.4%) and overall mortality (25.9%) than lower tertiles (p < 0.001). One-year survival was 87.4%, 93.4%, and 78.1% across tertiles 1-3, respectively (log-rank p < 0.001). EASIX independently predicted overall mortality (HR 1.21 per unit, 95% CI 1.07-1.38; p = 0.003) and in-hospital mortality (OR 1.29, 95% CI 1.05-1.59; p = 0.016). Adding EASIX to a base model (age, sex, LVEF, lnBNP) significantly improved reclassification for both endpoints (NRI = 0.314 and 0.357; IDI = 0.022 and 0.019; all p < 0.05). CONCLUSIONS: Preprocedural EASIX is independently associated with both in-hospital and overall mortality after TAVI and provides incremental reclassification beyond established clinical and biomarker variables. As an easily obtainable index from routine laboratory parameters, EASIX may serve as a simple and practical tool for preprocedural risk stratification, complementing rather than replacing established biomarkers such as BNP. Prospective multicenter studies are needed to validate these findings.

Infective endocarditis after transcatheter aortic valve implantation: risk factors and mortality impact in a case-control study.

AIMS: Infective endocarditis following transcatheter aortic valve implantation (TAVI-IE) is an uncommon but clinically devastating complication. We aimed to identify risk factors for TAVI-IE and to estimate its association with all-cause mortality. METHODS AND RESULTS: We conducted a case-control study including patients who underwent TAVI at Haukeland University Hospital, Norway, between 2012 and 2023. Patients who developed TAVI-IE (n=71) were compared with age-matched and sex-matched controls without IE (n=213; 1:3 ratio). Death was treated as a competing event in analyses of IE, and we estimated the subdistribution HRs (SHR) for IE using Fine-Gray competing risk regression. Cox regression models with IE as a time-dependent covariate assessed the impact of infection on mortality.The incidence of TAVI-IE was 1.2% per patient-year with a median time from TAVI to infection of 13 months (IQR 4-29). In multivariable competing risk analysis, diabetes mellitus remained an independent predictor of TAVI-IE (SHR 2.08, 95% CI 1.19 to 3.65, p=0.010). Obesity (27% vs 15%, p=0.019) and balloon-expandable valve use (28% vs 13%, p=0.003) were more often observed in patients with TAVI-IE. Enterococcus faecalis was the most frequent pathogen (30%). TAVI-IE was associated with an approximately twofold increase in all-cause mortality (adjusted HR 2.13, 95% CI 1.48 to 3.07, p<0.001) with the highest risk in early infections. CONCLUSION: TAVI-IE is an infrequent but severe complication associated with excess mortality. Diabetes mellitus was the dominant independent risk factor and E. faecalis the leading pathogen. These findings may help target monitoring and prevention in patients at the highest risk.

Aortic valve stenosis promotes pathological shear stress-dependent epigenomic dysregulation in circulating T cells.

BACKGROUND: Calcific aortic valve stenosis (AVS) is the most prevalent valvular heart disease in Western adults, yet no disease-modifying therapy exists. High shear stress (HSS) generated by progressive valvular obstruction drives endothelial injury and immune-mediated inflammation, but the contribution of circulating T cells to AVS pathogenesis remains poorly defined. OBJECTIVES: We tested whether chronic HSS corresponds with epigenomic reprogramming of peripheral T cells proportionate with hemodynamic severity to yield a clinically informative proxy of disease. METHODS: A prospective cohort of 70 participants was recruited for peripheral blood sampling, including 34 with severe symptomatic AVS (aortic valve area <1.0 cm 2 , mean gradient ≥40 mmHg) scheduled for transcatheter aortic valve implantation and 36 age- and sex-matched controls. Peripheral T cells were isolated and profiled by genome-wide CpG methylation (Illumina MethylationEPIC) and RNA-sequencing. To test whether HSS directly activates inflammatory signaling, Jurkat T cells were exposed to 20 dyn/cm 2 HSS via parallel-plate microfluidic chamber and concomitant CD3/CD28 stimulation, followed by assessment of NFAT nuclear translocation and NFAT target gene expression. RESULTS: Unsupervised clustering of the 5,000 most-variable CpG loci resolved an epigenomic axis segregating AVS from control T cells (PC1, 15.8% variance explained; P = 3.9×10 -6 ). Multivariable-adjusted analysis identified 3,950 differentially methylated positions (1,889 hyper-, 2,061 hypo-methylated), enriched in promoter-associated CpG islands implicating aortic valve morphogenesis (P = 6.0 x 10 -10 ) and cell-cell adhesion pathways (P = 9.5 x 10 -5 ). Multi-omics factor analysis isolated a latent factor that independently associated with AVS (adjusted P = 1.8×10 -3 ; AUC = 0.79), enriched for chemokine receptor binding and TNF-family signaling, and correlated with canonical HSS-responsive transcripts, consistent with a T cell-mediated shear stress activation. An 18-CpG elastic-net methylation risk score discriminated AVS from controls (AUC = 0.89) and independently predicted hemodynamic severity (β = 7.05 mmHg/SD, 95% CI 2.31-11.79). HSS augmented NFAT nuclear translocation in CD3/CD28-activated Jurkat T cells and induced NFAT-responsive inflammatory transcripts. CONCLUSIONS: Severe AVS is associated with promoter-enriched epigenomic remodeling of circulating T cells that converges on hemodynamic stress-dependent inflammatory programs. An 18-CpG methylation risk score outperforms clinical covariates and tracks hemodynamic severity, establishing peripheral T cell DNA methylation as a molecular corollary of AVS.

Value of Coronary CT Angiography in Ruling Out Coronary Artery Disease in Elderly Patients Candidates to TAVI.

Background: Coronary computed tomography angiography (cCTA) is now indicated as a non-invasive tool for ruling out obstructive coronary artery disease (O-CAD) in patients who are candidates for transcatheter aortic valve implantation (TAVI) showing low-intermediate pre-test probability of O-CAD. In elderly and comorbid TAVI candidates, the safety and accuracy of cCTA as an alternative to invasive coronary angiography (ICA) for ruling out O-CAD remain to be established. Aim: To assess the feasibility, diagnostic accuracy, and clinical safety of cCTA for ruling out proximal O-CAD in elderly, comorbid, high-risk patients undergoing TAVI. Methods: We conducted a retrospective, single-center study including all consecutive patients with severe symptomatic aortic stenosis who underwent TAVI between January 2019 and December 2020. All patients underwent pre-TAVI cCTA. Patients with positive or non-diagnostic cCTA underwent ICA selectively (ICA group). In patients with no-O-CAD, ICA was omitted and proceeded directly to TAVI (no-ICA group). Accordingly, patients were divided into two groups: no-ICA and ICA group. Clinical follow-up was extended up to 5 years, with assessment of major adverse cardiovascular events (MACEs), mortality, heart failure hospitalizations, and unplanned revascularization. Results: Among 355 patients enrolled, 210 were included in the study. Among them, 140 (66.7%) had negative cCTA for O-CAD, and ICA was safely omitted in 132 patients (62.8%). cCTA was inconclusive in 43 patients (20.5%) and positive in 27 (12.9%). ICA confirmed O-CAD in 53 of 78 patients (67.9%) and PCI was performed in 35 of 53 (66.0%). The accuracy of cCTA for ruling in O-CAD was low (66.28%). During the follow-up period (1513 ± 508 days), the no-ICA group showed comparable outcomes to the ICA group in terms of periprocedural complications and long-term results-at both 1 and 5 years-for MACEs, heart failure hospitalizations, mortality and unplanned revascularization. Outcomes remain comparable between the two groups after performing matched-pair analyses. Conclusions: Our data show that cCTA may provide a reliable, safe, and effective alternative to ICA for ruling out obstructive CAD in elderly patients undergoing TAVI when image quality is diagnostic. A cCTA-based strategy allows deferral of ICA in most cases without compromising procedural safety or long-term clinical outcomes, enabling a personalized and tailored clinical pathway. Whether advanced CT techniques, such as CT-FFR and photon-counting CT, may help refine patient selection for invasive coronary assessment remains to be demonstrated.

Recovery of atrioventricular conduction after transcatheter aortic valve replacement: A single center experience.

INTRODUCTION: Limited data are available on long-term changes in the conduction system following transcatheter aortic valve implantation (TAVI). OBJECTIVE: To assess AV conduction changes after TAVI and examine the relationship between pacemaker-derived parameters and surface ECG findings. METHODS: We retrospectively analyzed patients who underwent PM implantation after TAVI between July 2014 and June 2023. Demographic, imaging, procedural, and ECG data were collected. A dedicated follow-up (FU) visit, including device interrogation and a 12-lead ECG recorded during temporary VVI pacing at 30 bpm, was performed on average 1.7 ± 1.3 years post-implant. Based on FU ECGs, patients were classified as having persistent (persAVB) or regressive AV block (regrAVB). RESULTS: Among 377 TAVI procedures, 33 PM implantations (8.7%) occurred a mean of 5.7 days post-procedure. Indications included third-degree AV block in 27 (81%), second-degree AV block in 3 (9%), and bradycardia in 3 (9%). FU ECGs were available for 14 patients; 7 (50%) showed conduction recovery. Baseline QRS duration was significantly wider in persAVB than in regrAVB (107.1 ± 27.3 ms vs. 80.7 ± 1.6 ms; p = 0.038). Median right ventricular pacing (RVp) burden was substantially higher in persAVB (100% [IQR 98.8-100%]) compared with regrAVB (0% [IQR 0-2.5%]; p < 0.001). Pacemaker dependency was present in 28% of persAVB patients and in none of the regrAVB group. CONCLUSIONS: A substantial proportion of patients showed recovery of atrioventricular conduction over time, particularly those without pre-existing conduction disturbances. The degree of RVp closely reflected conduction recovery status during follow-up.

Routine cerebral embolic protection during TAVR: A Meta-analysis and trial sequential evidence from 11,000 randomized patients.

OBJECTIVES: To perform an updated meta-analysis assessing the effect of routine cerebral embolic protection (CEP) use on the incidence of stroke-disabling and non-disabling-following transcatheter aortic valve replacement (TAVR). METHODS: Electronic databases were systematically searched through August 2025 for eligible randomized controlled trials (RCTs) comparing CEP versus no CEP in TAVR. The primary outcomes were the incidence of overall stroke, disabling stroke, and non-disabling stroke at 2-5 days and 30 days post-procedure. Random-effects model was used to estimate risk ratios (RR) with 95% confidence intervals (CI). Evaluation of the certainty of evidence was done following the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) criteria. Trial sequential analysis was performed to assess the conclusiveness and the reliability of the data. RESULTS: Eight RCTs, including 11,692 patients, were analyzed. No statistically significant difference was observed in overall stroke incidence between CEP and control groups at 2-5 days (RR = 0.95; 95% CI: 0.75-1.19; p = 0.64) or at 30 days (RR = 0.93; 95% CI: 0.57-1.53; p = 0.79). Disabling stroke rates were also similar at 2-5 days (RR = 0.70; 95% CI: 0.41-1.18; p = 0.18) and at 30 days (RR = 1.18; 95% CI: 0.36-3.87; p = 0.78). Non-disabling stroke showed no significant difference at either time point. Safety outcomes, including major bleeding, vascular complications, and acute kidney injury, were also not significantly different. CONCLUSION: This updated meta-analysis found that a routine CEP strategy during TAVR was not associated with a statistically significant reduction in overall, disabling, or non-disabling stroke. The neutral effect on safety endpoints suggests a limited role for routine CEP use, although smaller benefits, device-specific effects, or benefits in selected higher-risk patients cannot be excluded.

Clinical Validation of an In-Silico Pace Mapping Approach to Localize both Focal and Reentrant Ventricular Arrhythmias in Patients with Structural Heart Disease.

BACKGROUND: Catheter ablation of ventricular tachycardia (VT) is characterized by long procedures and frequent recurrence. Personalized image-based computational models may provide non-invasive ablation target guidance, but are computationally demanding and cannot localize focal arrhythmias. OBJECTIVE: To clinically validate our near real-time in-silico pace-mapping (InSPM) approach which rapidly localizes both focal and reentrant arrhythmia site-of-origins within personalized image-based models. METHODS: Personalized models incorporating scar were reconstructed from imaging data of 18 structural heart disease patients. 12-lead ECGs were obtained during clinical pace-mapping and pacing site locations defined as ground truth. ECG templates of induced monomorphic VT were obtained. Virtual pacing was conducted in models and simulated ECGs correlated with clinical templates to produce high-resolution virtual pace-maps. Distance (d) between clinical ground truth sites and simulation predicted target areas with highest correlation quantitatively assessed InSPM accuracy for localizing focal activations. For reentrant VT, predicted targets were compared with surrogates of VT site-of-origin and mapped VT circuits. RESULTS: Intrinsic resolution of clinical pace-mapping was approximately 4mm for similarly correlated ECGs (mean correlation coefficient >0.99). Across 270 clinical pace-mapping locations, d was 8.2mm (6.9-12mm), relatively insensitive to cardiomyopathy, but with increased accuracy in right- versus left-ventricles. Patient-specific ECG electrodes alongside accurate scar representation, particularly in ischemic patients, was important for optimizing InSPM accuracy. InSPM created from clinical ECG VT templates reliably identified reentrant VT exit sites. CONCLUSIONS: InSPM provides a rapid and validated personalized computational modelling ablation technology to accurately localize both focal and reentrant VTs which may be practically integrated into clinical workflows.

METTL3 depletion mitigates hypoxic pulmonary arterial smooth muscle cell over-proliferation via YTHDF2-dependent regulation of FOXO1 mRNA N6-methyladenosine modification: a potential mechanism of hypoxic pulmonary hypertension.

AIMS: To determine the role of METTL3-mediated m6A modification in hypoxic pulmonary arterial smooth muscle cells (PASMCs) over-proliferation and hypoxic pulmonary hypertension (HPH). MATERIALS AND METHODS: Human PAH tissues, smooth muscle-specific Mettl3 knockout mice, HPH models, scRNA-seq, hPASMCs culture, MeRIP-qPCR, RIP-qPCR, luciferase assay, and functional assays. KEY FINDINGS: METTL3 was upregulated in HPH PASMCs. Mettl3 depletion alleviated HPH and suppressed PASMC proliferation via FOXO1 upregulation. METTL3 reduced m6A on FOXO1 3'UTR, decreased YTHDF2 binding, and stabilized FOXO1 mRNA. FOXO1 or YTHDF2 manipulation abolished METTL3-dependent effects. SIGNIFICANCE: We identify a METTL3-YTHDF2-FOXO1 axis driving PASMC proliferation in HPH, providing a potential therapeutic target.

Tanshinone IIA inhibits foam cell formation and alleviates atherosclerosis by regulating the Hedgehog signaling pathway through TRPM2 suppression.

The development of foam cells is crucial in the advancement of atherosclerosis (AS). Tanshinone IIA (Tan IIA), the primary lipophilic component of Salvia miltiorrhiza, has various pharmacological effects. Despite this, the precise role of Tan IIA in AS has not been fully elucidated. In this research, we employed ApoE-/- mice to establish an AS model. Oil Red O and HE staining indicated that Tan IIA obviously reduced plaque areas in both the aorta and aortic arch. Additionally, serum analysis revealed that Tan IIA notably decreased lipid and inflammatory factor levels in AS mice. In vitro studies showed that Tan IIA primarily prevented foam cell formation by enhancing cholesterol efflux rather than increasing lipid uptake. Mechanistic investigations reveal that Tan IIA suppresses the Hedgehog (Hh) signaling pathway by downregulating the expression of transient receptor potential melastatin 2 (TRPM2) and subsequently inhibiting Ca²⁺ influx. This cascade ultimately attenuates foam cell formation and impedes the progression of AS. Overall, this research provides a solid theoretical foundation for the potential application of Tan IIA in the treatment of AS.

Bailout valve-in-valve therapy during transcatheter aortic valve replacement in bicuspid and tricuspid aortic stenosis: an observational single-centre study in China.

BACKGROUND: Bailout valve-in-valve (ViV) transcatheter aortic valve replacement (TAVR) is a critical rescue strategy for procedural failure, yet evidence regarding its outcomes in bicuspid aortic valve (BAV) anatomy remains limited. METHODS: This retrospective, single-centre study analysed 1597 patients (48.3% BAV) undergoing TAVR. Patients were stratified by the requirement for bailout ViV, which was conducted for significant residual aortic regurgitation (AR) or valve embolisation. Predictors were identified via multivariate logistic regression. Early- and mid-term survival outcomes were compared using Inverse Probability of Treatment Weighting (IPTW) via entropy balancing. RESULTS: Bailout ViV was required in 6.20% of patients (BAV: 6.87%; tricuspid aortic valve (TAV): 5.57%). Larger annulus perimeter and significant residual AR after initial deployment were identified as consistent independent predictors of bailout ViV across all cohorts. Additionally, lower annulus calcification volume, non-repositionable self-expanding valves and the learning phase were predictors in the overall cohort. Significant mitral regurgitation and lower calcification volume in BAV and male sex in TAV cohorts were independent risk factors. IPTW-adjusted analysis revealed significantly higher 30-day all-cause (HR 3.09, p=0.019) and cardiovascular mortality (HR 3.49, p=0.021) in the bailout ViV group. However, no significant differences were observed in mid-term all-cause or cardiovascular mortality between groups. CONCLUSIONS: Bailout ViV was associated with elevated early mortality but offered satisfactory mid-term survival. Key predictors include anatomical challenges (large annulus and insufficient calcification) and procedural factors (non-repositionable self-expanding valve, learning phase TAVR and significant residual AR after the first prosthesis).

Reimbursement policy and outcomes after transcatheter aortic valve implantation.

BACKGROUND: Transcatheter aortic valve implantation (TAVI) is an established treatment for severe aortic stenosis. While reimbursement policies significantly expand access, the impact of Taiwan's National Health Insurance (NHI) coverage introduced in February 2021 on patient characteristics and outcomes remains unclear. This study evaluates changes in patient profiles and clinical outcomes before and after NHI reimbursement. METHODS: We compared patient profiles, procedural variables, and clinical outcomes, including 30-day complications and 1-year all-cause mortality, cardiovascular death, and rehospitalization for heart failure (HF). Risk was stratified using the Society of Thoracic Surgeons (STS) score. RESULTS: We analyzed 467 patients undergoing TAVI at a tertiary referral center between May 2010 and April 2024. Patients were divided into pre-reimbursement (n=258) and post-reimbursement (n=209) groups. Reimbursement was associated with a shift toward higher-risk patients, reflected by an increase in median STS scores (5.9% to 7.2%, p=0.002) and a greater proportion of patients with STS score ≥8% (44.0% vs. 31.8%, p=0.019). Post-reimbursement patients had higher prevalence of dialysis (17.7% vs. 7.6%, p=0.001) and more commonly underwent valve-in-valve TAVI for degenerated bioprosthetic valves (8.4% vs. 2.7%, p=0.007). Despite of this higher-risk profile, hospital stay was significantly shorter post-reimbursement (7.0 vs. 12.0 days, p<0.001). Valve Academic Research Consortium-3 (VARC-3) defined thirty-day outcomes were similar, except for reduced acute kidney injury in post-reimbursement patients (1.0% vs. 6.6%, p=0.021). One-year mortality was unchanged, but HF rehospitalization decreased significantly (2.9% vs. 8.1%, p=0.017). After multivariable adjustment, high STS risk (≥8%) independently predicted worse one-year outcomes. CONCLUSION: In this single-treatment group experience, NHI reimbursement in Taiwan expanded TAVI access to higher-risk patients without compromising short- or mid-term mortality, and was associated with reduced heart failure readmission, especially among high-risk patients.

The Relationship Between Digital Game Addiction, Computational Thinking Skills, and Well-Being of Middle School Children With and Without Congenital Heart Disease.

Background: Digital gaming is an integral part of children's everyday lives and may relate to both cognitive development and psychosocial well-being. Although computational thinking is considered a key skill for navigating digital environments, limited research has examined how digital game addiction relates to computational thinking and well-being, particularly among children with chronic health conditions such as structural heart disease. Objectives: This study aimed to examine the associations among digital game addiction, computational thinking skills, and well-being among middle school children with structural heart disease and their typically developing peers. Methods: An exploratory correlational design was employed. The sample consisted of 30 children with structural heart disease and 25 typically developing peers aged 10-14 years. Data were collected using the Computational Thinking Skills Scale, the Digital Game Addiction Scale for Children, and the EPOCH Well-Being Scale. Relationships among variables were examined using correlation analyses. Results and Conclusions: Among children with structural heart disease, higher levels of digital game addiction were associated with lower creativity, collaboration, and overall computational thinking skills. Computational thinking skills were positively associated with selected dimensions of well-being, particularly connectedness and perseverance. In typically developing children, digital game addiction was negatively associated with several computational thinking dimensions, whereas perseverance and certain aspects of well-being were positively associated with computational thinking skills. Overall, digital game addiction showed limited associations with well-being in both groups. These findings suggest that the relationships among digital game addiction, computational thinking, and well-being may be complex and context-dependent. Given the exploratory correlational design and relatively small sample size, the results should be considered preliminary.

Feasibility and safety of "fast-track" protocol after TAVI.

BACKGROUND: Transcatheter aortic valve implantation is the standard treatment for symptomatic severe aortic stenosis. Advances in technology and minimally invasive techniques have made early discharge following transcatheter aortic valve implantation a feasible and safe option, optimizing hospital resource utilization without compromising care quality. AIM: To evaluate the feasibility and safety of early discharge ("fast-track") following transcatheter aortic valve implantation in a single high-volume centre. METHODS: This single-centre retrospective study included consecutive patients undergoing transcatheter aortic valve implantation (TAVI) for symptomatic severe aortic stenosis between April 2022 and December 2023. Patients were stratified into FT- (ineligible), FT+/+ (next day discharge achieved), and FT+/- (early discharge failed) groups. The primary endpoint was a 3-month composite safety outcome. RESULTS: Between April 2022 and December 2023, 506 patients aged>18 years with severe symptomatic aortic stenosis underwent transcatheter aortic valve implantation at the University Hospital of Marseille Timone; of these, 479 patients were included in the analysis. Overall, 80.8% (n=409; 95% confidence interval 77.2-84.0%) of the total patient population were eligible for fast track (FT+). The primary reason for ineligibility (FT-) was the presence of complete right bundle branch block (49.6%, n=54; 95% confidence interval 40.1-59.2%). Among FT+ patients, 69.9% (n=286; 95% confidence interval 65.3-74.1%) were discharged the next day (FT+/+); the early discharge strategy failed in 30.1% (n=123) (FT+/-). Prolonged rhythm monitoring as a result of acquired conduction disorders delayed discharge in 55.9% (n=76; 95% confidence interval 47.0-64.3%) of FT+/- cases. High-grade conduction disorders necessitated a mean wait of 4.1 days for pacemaker implantation. At 3-month follow-up, cardiovascular events occurred in 4.4% (n=12/275) of FT+/+ patients, 6.9% (n=8/116) of FT+/- patients and 11.4% (n=10/88) of FT- patients (P=0.06). CONCLUSIONS: Next-day discharge after transcatheter aortic valve implantation was feasible and safe for 69.9% of eligible patients (representing 56.5% of the overall cohort). Eligibility for the fast track protocol was achieved in 80.8% of patients. Conduction disturbances and vascular complications remain key obstacles leading to prolonged hospital stays and requiring optimization.

Exploratory metabolomic profiling in migraine with PFO reveals dysregulated pathways and highlights indoleacrylic acid.

Patent foramen ovale (PFO) is increasingly linked to migraine, yet its systemic metabolic effects remain unclear. Using untargeted metabolomics, we analyzed arterial and venous plasma from migraine patients with PFO (PFO-M, n = 30) and venous plasma from healthy controls (n = 17). We identified 211 differentially expressed metabolites and multiple pathways involving branched-chain amino acids, neurosteroids, and tryptophan metabolism. The gut microbiota-derived metabolite indoleacrylic acid (IA) was inversely associated with migraine severity and was reduced in female PFO-M patients. In an independent cohort (n = 220), lower IA remained negatively associated with PFO-M (OR = 0.97, 95% CI 0.96-0.98), and the combination of IA and hs-CRP improved discriminative performance compared with either marker alone (AUC = 0.722). Together, these exploratory findings suggest systemic metabolic alterations in PFO-comorbid migraine and highlight IA as a candidate metabolic feature, supporting a potential role of gut-brain axis dysregulation.

Development of a Novel Holistic Assessment Strategy of TAVI-Induced Flow Restoration via Dimensionality Reduction Techniques.

PURPOSE: Restoration of physiological aortic hemodynamics is a crucial therapeutic target after transcatheter aortic valve implantation (TAVI). However, quantifying this restoration is challenging, particularly using conventional markers. This study presents a novel, unsupervised approach based on proper orthogonal decomposition (POD), suitable for holistic characterization of patient-specific aortic flow field and their association with procedural outcome. MATERIAL AND METHODS: Patients (n = 8) with severe aortic valve stenosis (AS) undergoing TAVI were studied. Three metrics were evaluated: patient-specific composite cardiovascular stress signature, pre-procedural free hemoglobin levels and degree of flow restoration. Flow restoration was quantified using POD-based similarity measures (Euclidean distances and Dynamic Time Warping), and compared with conventional hemodynamic markers, i.e. shear stresses, helicity and turbulence production. Unsupervised clustering was applied to explore agreement with biochemical patterns and clinical outcomes. RESULTS: POD identified coherent flow structures and enabled quantification of restoration relative to healthy references. POD-based markers provided more clinically interpretable groupings than conventional measures in this cohort. Patients with low restoration exhibited more pathological composite cardiovascular stress signatures and adverse outcomes during short-term follow-up. CONCLUSION: POD-based flow analysis provides a holistic and interpretable quantification of post-TAVI aortic hemodynamics. In the given cohort, the method showed agreement with biochemical patterns and clinical outcomes, highlighting its potential to complement conventional hemodynamic and procedural assessment.

Outcomes of Transcatheter Aortic Valve Replacement in Mixed Aortic Valve Disease: A Comparison Between Bicuspid and Tricuspid Valves.

BACKGROUND: The impact of aortic valve morphology on outcomes after transcatheter aortic valve replacement in patients with mixed aortic valve disease, characterized by the coexistence of aortic stenosis and regurgitation, remains poorly defined. This study aimed to compare outcomes of transcatheter aortic valve replacement between bicuspid and tricuspid aortic valve morphologies in patients with mixed aortic valve disease. METHODS: We retrospectively analyzed 282 patients with mixed aortic valve disease who underwent transcatheter aortic valve replacement between January 2019 and June 2024, including 82 with bicuspid aortic valve and 200 with tricuspid aortic valve. Propensity score matching at a 1:1 ratio yielded 82 well-balanced pairs. The primary end point was all-cause death, and secondary end points included technical success, paravalvular leak, clinical adverse events, hemodynamic performance, and left ventricular reverse remodeling. RESULTS: Both groups achieved high technical success rates (97.6% versus 93.9%; P=0.443) with comparable procedural outcomes. Although mild or greater paravalvular leak occurred more frequently in the bicuspid aortic valve group, this difference did not translate into higher 1-year all-cause death (3.7% versus 3.7%; P>0.999) or adverse events. Hemodynamic performance and left ventricular remodeling improved significantly in both groups; however, patients with bicuspid aortic valve showed more pronounced increase in left ventricular ejection fraction (median, 6.5% [interquartile range, -2.0% to 15.5%] versus 0.5% [interquartile range, -5.0% to 12.0%]; P=0.023), whereas the degree of reverse remodeling was less evident (median, -7.0 [interquartile range, -17.0 to -3.0] versus -11.0 [interquartile range, -20.0 to -6.0] mm; P=0.045). CONCLUSIONS: In patients with mixed aortic valve disease undergoing transcatheter aortic valve replacement, bicuspid aortic valve morphology was associated with more mild or greater paravalvular leak but similar procedural safety, hemodynamic outcomes, and clinical prognosis compared with tricuspid aortic valve, with distinct left ventricular recovery patterns.

Balloon-Expandable Versus Self-Expanding Prostheses for Transcatheter Treatment of Patients With Low-Flow, Low-Gradient Aortic Stenosis.

BACKGROUND: The use of balloon-expandable valves (BEVs) or self-expanding valves (SEVs) for transcatheter aortic valve replacement (TAVR) in patients with low-flow, low-gradient aortic stenosis (LFLG-AS) has been poorly investigated. Aim of this study is to evaluate the procedural and clinical outcomes of patients with severe low-flow, low-gradient aortic stenosis undergoing TAVR with current-generation prostheses. METHODS: This registry-based, multicenter, cohort study included consecutive patients with low-flow, low-gradient aortic stenosis undergoing TAVR from January 2019 to December 2024 at 17 high-volume Italian centers. The study population was divided into 2 groups according to the use of BEVs or SEVs. The primary outcome was all-cause mortality up to 1 year. RESULTS: The study involved 1380 patients; 592 (42.9%) underwent TAVR with BEVs, and 788 (57.1%) with SEVs. At discharge, BEVs were linked to higher mean transvalvular gradients (P<0.001) and a higher percentage of moderate predicted patient-prosthesis mismatch (P<0.001) compared with SEVs. After propensity score weighting, the Cox analysis showed no difference for the risk of the primary outcome (adjusted hazard ratio [HR]:1.23; 95% CI: 0.88-1.72), cardiovascular mortality (adjusted HR:1.37; 95% CI: 0.94-1.97), stroke (adjusted HR:1.83; 95% CI: 0.85-3.95), and myocardial infarction (adjusted HR:1.03; 95% CI: 0.40-2.69) between groups; however, the use of BEVs was associated with a significantly higher risk for HF hospitalization up to 1 year (adjusted HR: 1.54; 95% CI:1.05-2.25). CONCLUSIONS: In this real-world study on TAVR treatment for patients with low-flow, low-gradient aortic stenosis, there was no difference in mortality rates between BEVs and SEVs up to 1 year. However, the use of BEVs was linked to less favorable hemodynamic performance and a higher risk of HF hospitalization. REGISTRATION: URL: https://clinicaltrials.gov/; Unique identifier: NCT06589063.

Geometric coronary constraints and anatomical feasibility of redo TAVR in Asian patients with Evolut valves: A CT-based simulation study.

Redo transcatheter aortic valve replacement (TAVR) when implanting a second transcatheter valve within a tall-frame self-expanding valve can be challenging because of unfavorable coronary-related anatomy. However, computed tomography (CT)-based data in Asian patients with smaller aortic root dimensions remain limited.This study aimed to evaluate the CT-based geometric coronary constraints by simulating implantation of a balloon-expandable SAPIEN 3 (S3) within a previously implanted self-expanding Evolut valve in Asian patients. Consecutive patients who underwent TAVR using Evolut at a single center between May 2021 and May 2023 and had post-procedural CT were analyzed. Virtual S3-in-Evolut implantation was simulated at three depths (node 4: low; node 5: intermediate; node 6: high). Geometric coronary constraint was assessed based on the relationship between the neo-skirt plane and coronary ostia and the valve-to-aorta distance. Among 113 patients, the distribution of geometric coronary constraint differed by simulated S3 implantation depth. With high S3 implantation (node 6), severe, intermediate, and low constraint were observed in 63.7%, 23.9%, and 12.4% of patients, respectively; with intermediate implantation (node 5), in 31.0%, 29.2%, and 39.8%; and with low implantation (node 4), in 3.5%, 16.8%, and 79.6%. In multivariable analysis, smaller sino-tubular junction diameter was independently associated with severe geometric coronary constraint.Geometric coronary constraints that may affect coronary access after redo TAVR with S3-in-Evolut configurations depend on the implantation depth of both the index Evolut and the simulated S3. However, the hemodynamic significance and clinical impact of these geometric findings require validation through flow studies.

Exploratory Analysis of Early Renal Function Changes After Transcatheter Aortic Valve Implantation (TAVI): Limited Predictive Value Beyond Baseline Renal Function.

Background: In elderly, multimorbid patients, renal function changes are frequent following transcatheter aortic valve implantation. However, the early renal recovery following the relief of aortic stenosis is not sufficiently characterized. Methods: This retrospective single-center study comprised 410 consecutive patients who underwent TAVI. Serum creatinine and estimated glomerular filtration rate (eGFR) were measured prior to and within 72 h of TAVI to evaluate renal function. Primary outcomes were defined as absolute alterations (Δcreatinine and ΔeGFR). Spearman's correlation and multivariable regression were implemented to assess associations. Results: The mean age was 82.0 ± 8.7 years, and 46.9% of the participants were female. The eGFR demonstrated modest improvement (mean ΔeGFR +3.83 mL/min/1.73 m2), while creatinine showed minimal change (mean Δ -0.015 mg/dL). Renal function exhibited bidirectional alterations. Baseline creatinine was inversely associated with Δcreatinine (ρ = -0.127, p = 0.010), which was consistent with regression to the mean. Conversely, baseline eGFR was not associated with ΔeGFR (ρ = 0.004, p = 0.934). There were no significant correlations between renal changes and BMI (ρ = -0.041 and ρ = 0.047; both p > 0.30). In multivariable analysis, baseline creatinine remained independently associated with Δcreatinine (β = -0.279, p < 0.001), whereas ejection fraction exhibited a modest association (β = 0.012, p = 0.020). Acute kidney injury was observed in 13.9% of the population (57/410) and was not independently correlated with baseline variables. Conclusions: Early renal alterations following TAVI are frequent and frequently favorable; however, they are primarily indicative of baseline renal function, with limited independent predictive value of other variables. The results should be regarded as hypothesis-generating.

Rationale And Design Of The NPAC-India Study: A Prospective Multicenter Observational Study Of Pregnant Women With Heart Disease.

Cardiovascular disease (CVD) is a leading and preventable cause of maternal mortality in low and middle-income countries (LMICs), yet most management guidelines rely on data from high-income countries. Robust, nationally representative data on pregnant women with heart disease (PWHD) are limited in India, underscoring the need for locally relevant evidence to guide clinical practice and policy. The National Pregnancy and Cardiac Disease Study in India (NPAC-India) is a multi-phase national initiative, and this paper describes the protocol for Phase 1, a prospective multicenter observational study initiated at 56 sites across India. All consecutive pregnant women presenting for antenatal care with known or newly diagnosed cardiovascular diseases, including congenital or acquired structural heart disease, cardiac arrhythmia, ischemic heart disease, aortopathies, or pulmonary vascular disease, will be enrolled from July 2024. Clinical details related to antenatal, intranatal, and postnatal care will be systematically documented. All study participants will be followed up for six months after the end of their pregnancy. The primary outcome is a composite of maternal cardiac events during pregnancy and up to six weeks postpartum. The secondary outcomes cover obstetric and fetal parameters. The study will evaluate the predictive accuracy of widely used general and lesion-specific risk assessment tools in the Indian population and explore the development and validation of a population-specific risk stratification model. The NPAC-India study is expected to facilitate the development of evidence-based, locally tailored guidelines for managing heart disease in pregnancy, thereby reducing maternal and fetal risks in India. The generation of national data may strengthen clinical care, improve resource allocation, and inform public health policy.

How to Individualize Coronary Assessment and Revascularization in Severe AS Patients Undergoing TAVI in the Era of Lifetime Management?

Coronary artery disease (CAD) often coexists with severe aortic stenosis (AS) in patients undergoing transcatheter aortic valve implantation (TAVI), posing a complex diagnostic and therapeutic challenge. As TAVI is increasingly used for younger, lower-risk patients, managing CAD is becoming a personalized, long-term clinical concern. This narrative review summarizes the current evidence on coronary assessment and revascularization strategies in individuals with severe AS. Invasive coronary angiography remains the leading method for anatomical coronary imaging, but coronary computed tomography angiography is emerging as a reliable alternative that may reduce unnecessary invasive procedures in certain patients. The routine performance of PCI before TAVI is under increasing scrutiny, and available data support a more selective approach based on lesion significance, CAD complexity, procedural timing, and anticipated need for future coronary access. Significant uncertainties remain concerning the physiological evaluation of lesions, the timing and completeness of revascularization, and the treatment of left main or multivessel disease. Additional phenotype-specific and longitudinal studies are needed to improve management algorithms for this population.

A Transformer-Based Machine Learning Framework for Risk Stratification of Left Bundle Branch Block After Transcatheter Aortic Valve Replacement.

Background/Objectives: Left bundle branch block (LBBB) remains a common complication after transcatheter aortic valve replacement (TAVR) and is associated with adverse clinical outcomes. However, accurate prediction of LBBB remains challenging due to the complex interactions among the anatomical, procedural, and clinical factors. This study aimed to develop a machine learning (ML)-based framework to predict LBBB and identify relevant contributing features. Methods: In this multicenter retrospective study, we analyzed 242 patients undergoing TAVR across three institutions. A machine learning framework incorporating transformer-based feature selection and conventional classifiers was developed. Model performance was evaluated using accuracy, precision, recall, F1-score, and area under the receiver operating characteristic curve (AUC). Internal validation was performed using bootstrap resampling. Results: The gradient boosting model using ML-derived features demonstrated the most balanced performance, achieving an accuracy of 78.05% and an F1-score of 50.46%, with modest discrimination (AUC 0.61). The ML-based approach identified clinically relevant features, including coronary height, left ventricular outflow tract/annulus ratio, and prosthetic valve size, as well as additional variables not emphasized in conventional analyses. Conclusions: ML-based feature selection can capture complex feature interactions beyond traditional statistical approaches and provide clinically meaningful insights into risk stratification for LBBB after TAVR. Although predictive performance was modest, this approach highlights the potential of ML for improved risk stratification and individualized procedural planning. Further large-scale external validation is warranted.

Outcomes of Transcatheter Aortic Valve Implantation with Abbott's Portico Compared to Edwards' SAPIEN 3: A Systematic Review and Meta-Analysis.

Background/Objectives: Nowadays, transcatheter aortic valve implantation (TAVI) is widespread in patients with severe aortic valve stenosis. New prosthesis designs are becoming available to address the shortcomings of their predecessors and improve clinical outcomes. Methods: Electronic databases were screened for studies comparing outcomes of TAVI with Portico and SAPIEN 3. In a random-effects meta-analysis the pooled incidence rates of procedural, clinical and functional outcomes, according to VARC-2 definitions, were assessed. Results: Thirteen observational studies and one multi-center randomized clinical trial enrolling 20,522 patients (Portico N = 3001 and SAPIEN 3 N = 17,521) were included in the analysis. The need for more than one prosthesis during initial implantation was significantly higher among Portico recipients compared to SAPIEN 3 recipients: (RR 2.72 [1.36, 5.45] p = 0.005). Pre- and post-dilatation were performed more frequently in the Portico group (RR 1.53 [1.12, 2.09], p = 0.008 and RR 4.21 [2.83, 6.26], p < 0.00001, respectively). Moderate-to-severe paravalvular leak (PVL) was significantly more common in the Portico arm (RR 3.27 [1.80, 5.91] p < 0.0001). In contrast, the mean gradient and rate of prosthesis-patient mismatch (PPM) was significantly lower in the Portico group (MD -31.58 [-37.02; -26.14] mmHg and RR 0.42 [0.32, 0.55], p < 0.00001). Recipients of Portico demonstrated over 60% higher risk of permanent pacemaker implantation (PPI) compared to SAPIEN 3 (RR 1.62 [1.25, 2.10], p = 0.0002). Other procedural and short-term clinical outcomes, including neurologic events, major vascular complications, life threatening or major bleeding, acute kidney injury, myocardial infarction and mortality did not differ between the devices. A difference in mortality was observed at the 1-year follow-up (RR 1.26 [1.06, 1.51], p = 0.01; I2 = 5%). Conclusions: The evidence shows good short-term outcomes for both valves. Compared to SAPIEN 3, Portico was associated with a significantly higher rate of moderate-to-severe PVL and PPI, but a lower mean gradient and incidence of PPM. A significantly higher 1-year mortality was observed in the Portico group.

Incidence, Clinical Characteristics and Outcomes of Severe Prosthesis-Patient Mismatch in Patients Undergoing TAVI with Large Aortic Annuli.

Background and Objectives: Recent studies have focused on evaluating the hemodynamic results in patients undergoing transcatheter aortic valve implantation (TAVI) with small aortic annuli. There is limited data on the incidence, clinical characteristics, and mortality of prosthesis-patient mismatch (PPM) in patients undergoing TAVI with large aortic annuli. Materials and Methods: This is a retrospective analysis of consecutive patients with severe aortic stenosis and large annuli who underwent TAVI at a single UK center. PPM was defined according to the Valve Academic Research Consortium (VARC-3) criteria and identified using echocardiography within 4-6 weeks following TAVI. Measurements were analyzed by an experienced operator who was blinded to the type of valve platform and clinical outcomes. Results: A total of 447 patients were screened, of whom 353 patients were included in the analysis. The incidence of any PPM or severe PPM was 38% and 15% of patients, respectively. Patients with severe PPM were younger, had larger body surface area, and were more likely to receive a balloon-expandable valve (BEV). At a mean follow-up of 35 months, mortality was numerically higher in patients with severe PPM (46% vs. 36%, p = 0.20) but this did not reach statistical significance. Similar mortality rates were observed among patients with or without severe PPM in those who received SEV as well as BEV. There was a differential role of body surface area in mortality in patients who developed severe PPM versus non-severe PPM. Conclusions: Severe PPM was evident in patients with large aortic annuli undergoing TAVI, particularly those who received BEV. Nonetheless, severe PPM did not impact mortality rate at three-year follow-up. Longer-term follow-up may be required to assess the impact of severe PPM on mortality.

Photon counting detector CT contrast agent-reduced transcatheter aortic valve reconstruction planning: a comparative study.

OBJECTIVES: Continuous efforts are made to reduce contrast media, improving patient safety, reducing environmental risks, and addressing recurring supply shortages. The aim of this study was to evaluate contrast agent-reduced CT protocols for transcatheter aortic valve reconstruction (TAVR) planning in photon counting detector CT (PCDCT). MATERIALS AND METHODS: 162 BMI-matched examinations with standard dose contrast media (SCD; 80 mL; Iohexol 300 mg/mL; 81 examinations) and reduced contrast media dose (RCD; 50 mL; 81 examinations) for TAVR planning on a PCDCT were included in this retrospective monocentric study. Virtual monoenergetic reconstructions (VMI) at 70 keV, 60 keV and 50 keV of contrast agent-reduced examinations were compared with polyenergetic images. Quantitatively, regions-of-interest (ROIs) were placed in the abdominal aorta, iliac bifurcation, femoral artery, left ventricle and trapezius muscles. Signal-to-noise-ratio (SNR) and contrast-to-noise-ratio (CNR) were calculated. Qualitatively, diagnostic quality and contrast were assessed on a visual grading scale of 1 (non-diagnostic) - 5 (excellent) and contrast agent dose was estimated. RESULTS: Averaged, SNR and CNR decreased by 8.71% and 16.78%, respectively, on PCDCT with reduced contrast dose (RCD vs. SCD; both p < 0.001). VMI50keV increased SNR by 44.10% (p < 0.001) and CNR by 52.73% (p < 0.001) compared with SCD. In the ascending aorta, SNR increased from 19.80 ± 6.24 (SCD) to 35.78 ± 13.20 (RCDVMI50keV) and CNR from 18.84 ± 7.78 to 29.77 ± 16.70. Median contrast intensity was 5 for SCD, 4 for RCDCR, and 5 for RCDVMI50keV. CONCLUSION: The diagnostic efficacy of TAVR planning assessment using PCDCT with minimized contrast agent dosing is preserved, presenting a practical approach to conserve contrast media. KEY POINTS: Question The aim of the study was to implement a PCDCT-adapted contrast media dose protocol to reduce contrast agent volume at sufficient diagnostic quality. Findings PCDCT enables substantial contrast dose reduction for TAVR planning with maintained diagnostic image quality. Low-keV virtual monoenergetic image reconstructions compensate for the reduced iodine concentration. Clinical relevance The study demonstrates the potential of contrast media reduction of PCD-CT in clinical routine. This can benefit patients with renal impairment, for example, and reduce the negative effects of iodinated contrast media on the environment.

Strain characterization of multi-chamber cardiac dysfunction and associated prognosis in patients undergoing TAVR for severe AS.

BACKGROUND: In patients with severe aortic stenosis (AS) undergoing transcatheter aortic valve replacement (TAVR), myocardial dysfunction may extend beyond the left ventricle and remain underrecognized by conventional severity classification paradigms. Strain echocardiography allows early detection of subclinical dysfunction across cardiac chambers, potentially enhancing prognostic stratification. METHODS: We retrospectively analysed 234 patients with severe AS undergoing TAVR who had echocardiograms suitable for strain analysis. Left ventricular (LV), left atrial (LA), and right ventricular (RV) strain values were quantified pre- and post-TAVR. Chamber dysfunction was defined using consensus strain thresholds, and multichamber impairment (MCI) was defined by dysfunction in two or more chambers. A modified damage staging system incorporating strain data was compared to an established model. The association between chamber impairment and all-cause mortality was explored. RESULTS: Strain-defined chamber impairment was common, with 29% of patients exhibiting MCI. LA dysfunction was the most frequent isolated abnormality, accounting for 88% of single chamber impairment. Modest improvement was observed post-TAVR, predominantly in LV global longitudinal strain (+ 1.8 ± 3.5%, p < 0.01). MCI was associated with higher rates of atrial fibrillation, chronic kidney disease, and mitral/tricuspid regurgitation. At 12-month follow-up, patients with three-chamber impairment had significantly increased mortality risk (HR 6.84, 95% CI 1.77-26.4, p = 0.005). The modified staging system reclassified 27% of patients into higher risk categories but did not significantly improve predictive accuracy over the established model. CONCLUSION: Multichamber dysfunction, particularly involving the LA, is prevalent in patients undergoing TAVR and confers a higher early mortality risk. While the addition of strain data improves damage detection, its incremental prognostic value over conventional models appears modest in this cohort. Larger studies are required to explore this further. Comprehensive strain imaging may nonetheless identify patients requiring closer surveillance and targeted post-TAVR therapy.

Global variability in bicuspid aortic valve morphology and aortopathy among patients with severe aortic stenosis referred for transcatheter valve implantation.

BACKGROUND: While some studies have investigated the characteristics of patients from Asian versus European regions with bicuspid aortic valve (BAV) disease undergoing transcatheter aortic valve implantation (TAVI), geographic differences in a worldwide population remain poorly understood. The aim of our study was to evaluate the geographic differences of aortic valve morphology, annular size and associated aortopathy in a large, diverse population of India, West Europe, East Europe, Latin America, Middle East, Russia Commonwealth of Independent States, Asia Pacific and Africa patients with severe aortic stenosis (AS) referred for TAVI. METHODS: Data from cardiovascular multislice CT of severe AS patients referred for TAVI were analysed in a centralised core laboratory. Differences in valvular phenotype, annular size and aortic morphology were analysed with a focus on BAV patients. RESULTS: Among 12 712 patients evaluated, 3203 (25%) had BAV. These patients were more frequently male, younger and had larger annular area, aortic root diameters and higher prevalence of horizontal aorta (23% vs 10%, p<0.01) and severe calcifications (52% vs 32%, p<0.01). The highest prevalence of BAV was observed in patients from India (43%), with this group also being the youngest while the lowest was in patients from African regions (7%). Type 1 BAV was the most common (71%), followed by type 0 (26%) and type 2 (3%) subsets. Aortopathy was common across all geographic regions, but smaller aortic valve complex dimensions and lower coronary ostia height were seen in patients from India and the Asia-Pacific region. Eccentricity index and horizontal aorta were similar across different geographic regions. CONCLUSIONS: BAV morphology and annular size showed significant heterogeneity based on the geographical origin. These differences may be relevant for procedural planning and anatomical assessment in BAV patients undergoing TAVI worldwide.

Evaluation of the efficacy of empagliflozin in patients with preserved left ventricular ejection fraction undergoing transcatheter aortic valve implantation for aortic stenosis: protocol for a randomised, open-label, controlled study.

INTRODUCTION: Heart failure occasionally develops after transcatheter aortic valve implantation (TAVI) for severe aortic stenosis (AS), despite procedural success. Most cases present with mildly reduced or preserved left ventricular ejection fraction (LVEF), underscoring the role of diastolic dysfunction. Sodium-glucose cotransporter 2 (SGLT2) inhibitors have shown benefits across the heart failure spectrum, independent of LVEF. The purpose of this randomised controlled trial is to determine whether adding a SGLT2 inhibitor to conventional medications improves LV diastolic function in patients with preserved LVEF after TAVI. METHODS AND ANALYSIS: This study is a prospective, single-centre, open-label, randomised, parallel-group, two-arm trial enrolling patients with mildly reduced or preserved LVEF (≥40%) undergoing TAVI for severe AS. Participants will be randomised in a 1:1 ratio to receive either conventional medications plus empagliflozin or conventional medications alone. In the empagliflozin group, participants will receive conventional medical therapy plus empagliflozin 10 mg orally once daily, initiated 4 weeks after TAVI. Empagliflozin treatment will continue throughout the study period. Participants in the control group will receive conventional medications without empagliflozin. The primary endpoint is the change in E/e', assessed by echocardiography from treatment initiation at 4 weeks post TAVI (day 1) to day 168 (week 24). Each group will include 50 patients, totalling 100 patients. ETHICS AND DISSEMINATION: Ethical approval for this study has been obtained from the Chiba University Hospital Certified Clinical Research Review Board (CRB0111-25). TRIAL REGISTRATION NUMBER: jRCT1031250190.

Clinical outcomes after transcatheter aortic valve replacement by sex and subtype of low-flow aortic stenosis.

OBJECTIVES: Prior studies suggest sex differences in clinical outcomes following transcatheter aortic valve replacement (TAVR) in patients with severe aortic stenosis (AS). The authors hypothesized that among patients with low-flow aortic stenosis (LFAS), outcomes differ based on sex and subtype of LFAS: classical (cLFLG), paradoxical (pLFLG), and high gradient (LFHG). METHODS: This single-center, observational, longitudinal cohort study included adults with LFAS who underwent TAVR. Differences in clinical outcomes (all-cause mortality, heart failure hospitalization [HFH], and myocardial infarction [MI]) by subtype of LFAS within each sex were examined via Kaplan Meier curves. Log rank P-values were reported. RESULTS: A total of 599 patients with LFAS were followed for 12 months after TAVR. Of the male patients (n = 373), 25.2% had LFHG, 32.7% cLFLG, and 42.1% pLFLG AS. Of females (n = 226), 26.1% had LFHG, 13.3% cLFLG, and 60.6% pLFLG AS. Event rates in males were 13.1% all-cause mortality, 6.2% HFH, and 0.8% MI. Event rates in females included 6.6% all-cause mortality, 8.0% HFH, and 0 MI. In males, the LFHG vs cLFLG vs pLFLG subtypes demonstrated significant differences in time to all-cause mortality (P < .001), HFH (P = .014), and MI (P = .045). CONCLUSIONS: In this cohort, clinical outcomes in males significantly differed by subtype of LFAS, whereas these differences were not found in females.

Left Bundle Branch Area Pacing versus Deep Septal Pacing in Patients After Transcatheter Aortic Valve Replacement.

BACKGROUND: Left bundle branch area pacing (LBBAP) has been reported to improve long-term clinical outcomes in patients requiring permanent pacemaker implantation (PPMI) after transcatheter aortic valve replacement (TAVR). Deep septal pacing (DSP) has emerged as a potential alternative to LBBAP. OBJECTIVE: This study investigated whether short-term and long-term clinical outcomes differ between LBBAP and DSP in post-TAVR patients. METHODS: Consecutive patients undergoing LBBAP or DSP following TAVR were retrospectively included at our institution. Short-term clinical outcomes (1-year follow-up) were assessed by echocardiographic measures of reverse remodeling and changes in QRS duration and N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels. For long-term outcomes, the primary composite endpoint was all-cause mortality or heart failure hospitalization (HFH). Secondary endpoints included HFH and improvement in New York Heart Association (NYHA) class (≥ 2 grades). RESULTS: A total of 82 patients (39 LBBAP and 43 DSP) were observed for a mean duration of 731.8 days. There was no significant difference between two groups in the risk of primary endpoint (23.1% vs. 23.3%, adjusted hazard ratio [aHR] 0.61; 95% CI: 0.23-1.61, p = 0.315) and HFH (17.9% vs. 20.9%, aHR 0.64; 95% CI: 0.22-1.82; p = 0.402). However, LBBAP was a robust predictor of NYHA class improvement compared to DSP (53.8% vs. 27.9%, aHR 2.23; 95% CI: 1.03-4.87, p = 0.043), especially when left bundle branch (LBB) capture was independently confirmed (aHR 2.74, p = 0.006). Both modalities were similarly effective in improving electromechanical and biochemical parameters, including LVEF, LVEDD, QRS duration, and NT-proBNP (all p > 0.05). CONCLUSION: LBBAP and DSP yield comparable risks for the primary composite endpoint and HFH, yet LBBAP provides superior symptomatic relief. Confirmation of left bundle branch capture is advisable to optimize clinical benefits. Liangzhen Qu and Xueting Duan contributed equally to this manuscript.

Child Opportunity Index and Prevalence of Obesity and Hypertension in Adolescents with Congenital Heart Disease.

Children with congenital heart disease (CHD) are at increased baseline cardiovascular (CV) risk due to their structural heart disease and social determinants of health may further increase their CV risk. The Child Opportunity Index (COI) is a measure of neighborhood conditions and is associated with cardiometabolic risk in children. However, the impact of COI on children with CHD and associated cardiometabolic risk factors has not been well described. Patients aged 13-17 years with echocardiogram data between 2012 and 2019 were reviewed. COI scores were calculated using geolocation data. Patients were classified into state-normed COI groups into Very Low, Low, Moderate, High, and Very High opportunity groups. Prevalence of obesity, hypertension, and left ventricular hypertrophy (LVH) were determined. A total of 768 patients (mean age 15.49 ± 1.46 years, 57% male (437/768) were included. A high proportion of patients were in the Very Low and Low COI groups (37.5%). There were significant differences in obesity prevalence between COI groups (X2 = 18.52, df = 4, p < 0.001) with the Low group having the highest prevalence (26.4%). There was not a significant difference in hypertension prevalence between groups. There were significant differences in LVH prevalence between groups (X2 = 11.43, df = 4, p = 0.02) with the highest prevalence in the Low COI group (32.3%). Adolescents with CHD had significant differences in prevalence of obesity and LVH by COI with higher prevalence in the more adverse COI groups. This highlights the importance of considering SDoH when risk stratifying children with CHD.

Patterns in Curated Celebrity Mortality Data: An Exploratory Analysis of Cardiovascular Disease Representation and Dataset Bias.

BACKGROUND: Publicly reported celebrity deaths receive substantial media attention and may influence how individuals perceive disease burden. However, datasets constructed from publicly available sources are often curated and may not reflect underlying epidemiological distributions. Understanding how dataset construction influences observed mortality patterns is therefore important. OBJECTIVE: To present a purposively curated and openly documented dataset of publicly reported celebrity deaths as a worked methodological illustration of how dataset construction, selection, and reporting practices may shape apparent mortality distributions in media-visible data. MATERIALS AND METHODS: A purposively curated dataset of 164 celebrity deaths was assembled from publicly available English-language sources, principally Wikipedia entries and their referenced material. Cases were selected to include variation in age, reported sex, and cause of death to enable descriptive comparison. Causes of death were classified as cardiovascular or non-cardiovascular using rules defined a priori, and cardiovascular disease (CVD) cases were further subdivided into six International Classification of Diseases (ICD)-aligned subcategories. To assess classification reproducibility, a blinded second coder independently re-classified a random sample of 30 cases. The dataset, the case-level ICD mapping dictionary, and a reproducible analysis pipeline are openly available. RESULTS: Cardiovascular causes accounted for 84 of 164 deaths in the curated dataset (51.2%); non-cardiovascular causes accounted for 80 deaths (48.8%). Within the CVD group, the largest subcategory was heart failure and other unspecified CVD (33 cases; 39.3%), followed by ischemic heart disease (22 cases; 26.2%), cerebrovascular disease (nine cases; 10.7%), arrhythmia and sudden cardiac death (seven cases; 8.3%), aortic and pulmonary vascular disease (seven cases; 8.3%), and cardiomyopathy and structural heart disease (six cases; 7.1%). The two coders agreed on the binary CVD/non-CVD classification for all 30 cases in the reliability sample (Cohen's κ = 1.00) and on the six-category subcategory classification for all 18 cases that both coders classified as CVD (Cohen's κ = 1.00). Cardiomyopathy and structural cases occurred at a notably younger mean age (35.5 years) than other CVD subcategories. CVD deaths overall occurred at older ages than non-CVD deaths and were predominantly observed among males. CONCLUSIONS: The patterns observed in this curated dataset reflect the combined effects of investigator selection, demographic non-comparability between celebrities and the general population, and reporting practices in publicly available sources. The high proportion of non-specific cause-of-death descriptions illustrates an important component of reporting bias in media-visible mortality data.

Percutaneous Retrieval of a Micra™ Leadless Pacemaker Using a One-tine-based Snaring Technique: The Tine Is Durable but Maybe It Should Be the Last Resort.

Micra™ retrieval techniques involve snaring the proximal knob; however, device orientation can hinder knob access. Unorthodox retrieval methods included a two-snare approach and a "snare-in-snare" technique. We describe a single-tine-based snaring approach of a Micra™ leadless pacemaker (Medtronic, Minneapolis, MN, USA) 4 days after implantation due to loss of capture. An 89-year-old man with a history of chronic kidney disease, hypertension, and transcatheter aortic valve replacement complicated by complete heart block underwent Micra™ implantation. Four days later, he presented with syncope. Interrogation showed an elevated capture threshold with intermittent loss of capture. Chest radiography confirmed an upside-down orientation in the right ventricular outflow tract. A 27-Fr outer-diameter Aveir™ Introducer Sheath (Abbott, Chicago, IL, USA) was advanced via the right femoral vein. The Aveir™ leadless pacemaker (Abbott) was implanted in a lower septal position. Multiple attempts to snare the Micra™ device's retrieval knob using the Aveir™ Retrieval Catheter (Abbott) and a Goose Neck Snare (20-mm loop diameter, 102 cm; Covidien [Medtronic], Dublin, Ireland) through a steerable sheath failed. A figure-of-eight stitch was placed around the introducer sheath and left untied. The snare engaged a partially free tine. Gentle traction confirmed secure engagement, and controlled traction disengaged the remaining tines. The device was withdrawn into the inferior vena cava but could not be pulled into the sheath due to angulation. The entire system was removed, and the groin stitch was tied. However, the Micra™ dislodged into the groin subcutaneous tissue. Iliofemoral angiography via internal jugular vein access confirmed no extravasation, and the device was explanted through a small groin incision using forceps. Percutaneous retrieval of a Micra™ leadless pacemaker, with short dwell time, is feasible using a one-tine-based snaring technique when snaring of the proximal retrieval knob fails. The tine is durable; however, caution should be exercised.

The Role of Multimodality Imaging in Guiding Ventricular Tachycardia Ablation: An Updated Review.

Multimodality imaging plays a pivotal role in ventricular tachycardia (VT) ablation by providing critical insights into arrhythmogenic substrates and guiding procedural strategies. This updated review explores the integration of various imaging techniques, including echocardiography, cardiac magnetic resonance (CMR), multidetector computed tomography (MDCT), electroanatomical mapping (EAM), and nuclear imaging, to optimize VT ablation outcomes. Echocardiography, particularly transthoracic echocardiography (TTE), is an essential first-line tool for evaluating structural heart disease and left ventricular function. Moreover, echocardiography aids in risk stratification and procedural planning by detecting regional wall motion abnormalities and thrombus formation. Meanwhile, intracardiac echocardiography (ICE) enhances ablation precision by providing real-time catheter visualization, improving procedural success, and reducing complications such as cardiac tamponade. Nonetheless, CMR is the gold standard for myocardial tissue characterization, enabling the identification of scar burden and conduction channels critical for VT pathogenesis. Late gadolinium enhancement (LGE) facilitates preprocedural planning by localizing arrhythmogenic substrates, predicting VT recurrence risk, and informing ablation strategies. Additionally, T1- and T2-mapping techniques refine the assessment of myocardial fibrosis and inflammation, further improving patient selection and outcomes. MDCT complements CMR by offering high-resolution anatomical visualization and aids in delineating scar distribution, epicardial fat, and vascular structures, informing safe and effective ablation approaches. The integration of these imaging modalities significantly enhances VT ablation precision, reduces recurrence rates, and improves patient outcomes.

General Anaesthesia Versus Conscious Sedation in Transcatheter Aortic Valve Implantation: Differences in Pulmonary Infections.

BACKGROUND: Patients undergoing transfemoral aortic valve replacement are particularly vulnerable and require a more sophisticated anesthetic therapeutic approach. According to the literature, no study has directly compared general anaesthesia with conscious analgosedation using postoperative infections as the primary endpoint. METHODS: Patients undergoing transcatheter aortic valve implantation (TAVI) were analyzed retrospectively. A total of 3313 patients from a large heart center in Western Europe were included in this study. One group received general anaesthesia, and the other group received analgosedation for TAVI. The primary outcome was postinterventional pneumonia; secondary outcomes included myocardial infarction, renal failure, stroke, and 30-day mortality. Propensity score matching using 16 matching criteria yielded over 1000 pairs. RESULTS: No difference was observed in the incidence of postinterventional pneumonia (p = 0.148). The occurrence of myocardial infarction (p = 0.2) and stroke (p = 0.4) also did not differ significantly between the two groups. In contrast, the need for transient renal replacement therapy (p = 0.02) and 30-day mortality (p = 0.02) were lower in the analgosedation group. CONCLUSIONS: Regarding postinterventional pneumonia, general anaesthesia can be used as safely as analgosedation during TAVI. However, since renal failure requiring temporary replacement therapy and mortality are both increased with general anaesthesia, analgosedation should be the standard of care for TAVI in high-volume centers. The anesthetic regimen must be determined on an individual basis and discussed during the heart team briefing. The conversion to, or primary use of, general anaesthesia when clinically indicated is safe. Overall, ensuring the continuous presence of a senior consultant anesthetist, specifically trained in cardiac anaesthesia, throughout the procedure is essential.

Non-ST-Segment Elevation Myocardial Infarction (NSTEMI) in a High-Risk Rheumatoid Arthritis Patient on Long-Term Baricitinib: Drug Signal or Risk Factor Convergence?

Rheumatoid arthritis (RA) is associated with increased cardiovascular (CV) morbidity and mortality, partly related to chronic systemic inflammation and accelerated atherosclerosis. Janus kinase (JAK) inhibitors, including baricitinib, are effective targeted therapies for RA, but their use in older patients and those with baseline CV risk factors requires careful risk assessment. We report a clinically detailed case of non-ST-elevation myocardial infarction (NSTEMI) during long-term baricitinib therapy and use it to discuss real-world CV risk stratification, monitoring, and pharmacovigilance in patients with RA receiving JAK inhibitors. A 77-year-old Omani woman with seropositive erosive RA since age 69 (Month 0), poorly controlled type 2 diabetes mellitus, well-controlled hypertension, well-controlled hyperlipidemia, obesity, and family history of myocardial infarction was treated with baricitinib 4 mg daily (Month 47) after inadequate response to previous disease-modifying antirheumatic drugs. Her RA remained in sustained remission for approximately 33 months on baricitinib and methotrexate. A cardiac evaluation performed five years earlier, including echocardiography and dobutamine stress testing, had not shown evidence of inducible ischemia or structural heart disease at that time. She subsequently developed sudden chest pain during physiotherapy, was diagnosed with NSTEMI (Month 79), and underwent percutaneous coronary intervention for severe calcified coronary artery disease with critical left anterior descending and diagonal branch stenoses. Baricitinib was discontinued at Month 80, and she remained in RA remission on methotrexate alone without recurrent CV events through her most recent follow-up (Month 108). A comprehensive literature review using MEDLINE/PubMed, Scopus, EMBASE, and Google Scholar identified only three relevant cases describing NSTEMI during baricitinib therapy in RA, but they lacked sufficient clinical detail for meaningful comparison. Naranjo adverse drug reaction probability scale supports a possible association. This case highlights the need for structured CV risk reassessment, shared decision-making, and pharmacovigilance during long-term JAK inhibitor therapy in high-risk patients with RA.

Multidisciplinary approach to prolonged in-hospital cardiac arrest (IHCA) managed by ECPR and emergent valve-in-valve transcatheter aortic valve implantation.

IntroductionExtracorporeal Cardiopulmonary Resuscitation (ECPR) is a lifesaving intervention for in-hospital (IHCA) and out-of-hospital cardiac arrest (OHCA). However, severe aortic regurgitation (AR) has traditionally been considered an absolute contraindication for veno-arterial extracorporeal membrane oxygenation (V-A ECMO).Case reportA 63-year-old man with aortic regurgitation experienced IHCA with 50 min of low-flow time. The patient received ECPR and emergent valve-in-valve (ViV) transcatheter aortic valve implantation (TAVI) through a rapid multidisciplinary approach. Despite transient focal neurological symptoms in the early post-resuscitation period, the patient steadily recovered and was discharged with a favourable Cerebral Performance Category (CPC) of 2.DiscussionThis case challenges the absolute contraindication of severe aortic regurgitation for veno-arterial extracorporeal membrane oxygenation (V-A ECMO) and ECPR candidacy, demonstrating that a multidisciplinary approach with planned venting strategies and rapid definitive intervention can lead to satisfactory patient outcomes.ConclusionSevere aortic regurgitation may not absolutely preclude candidacy for peripheral V-A ECMO. A pre-emptive approach integrating detailed venting strategies with emergent transcatheter interventions expands the salvageable population with valvular heart disease.

Preoperative osteosarcopenia predicts adverse outcomes in patients undergoing transcatheter aortic valve implantation.

[Purpose] Transcatheter aortic valve implantation (TAVI) has become a standard treatment for severe aortic stenosis; however, reliable predictors of post-TAVI outcomes remain unclear. Osteosarcopenia, defined as the coexistence of low muscle mass and low bone density, has been associated with poor outcomes in older adults, but its prognostic significance in TAVI patients has not yet been established. This study aimed to investigate the prognostic significance of preoperative osteosarcopenia in patients undergoing TAVI. [Participants and Methods] This retrospective study included 93 consecutive patients who underwent TAVI at Sapporo City General Hospital between 2019 and 2023. Sarcopenia and osteopenia were evaluated using computed tomography-derived psoas muscle index (PMI) and vertebral bone mineral density (BMD), respectively. Osteosarcopenia was defined as values in the lowest sex-specific tertile for both PMI and BMD. The primary outcome was a composite of all-cause mortality and unplanned hospitalization within 1 year after discharge. [Results] Among the 93 patients (mean age, 84.9 ± 5.9 year; 38.7% male), 14 (15.1%) were diagnosed with osteosarcopenia. During follow-up, 28.0% of participants experienced the composite endpoint. Patients with osteosarcopenia demonstrated significantly lower event-free survival rates. Multivariate Cox regression analysis identified osteosarcopenia as an independent predictor of adverse outcomes. [Conclusion] Preoperative osteosarcopenia independently predicts poor clinical outcomes after TAVI in ambulatory patients and may serve as a useful marker for early risk stratification.

Sex Differences Among Patients With Aortic Stenosis Undergoing Transcatheter Aortic Valve Replacement: A Single-Center Observational Study.

INTRODUCTION: This study aimed to elucidate gender differences in cardiac function among patients undergoing aortic valve replacement (TAVR) for severe aortic stenosis (AS) and to clarify their clinical implications for outcomes. METHODS: We retrospectively evaluated 550 consecutive patients with severe AS treated between January 2017 and August 2022. Patients with hemodialysis, valve-in-valve procedures, and unsuccessful procedures were excluded. RESULTS: The final study cohort included 514 patients who underwent successful TAVR (84 ± 5 years, 339 females). Female patients had a smaller physique and fewer atherosclerotic diseases, and chronic obstructive pulmonary diseases. Sizes of left ventricle and aortic valve were smaller in women even after the corrections by physique. Additionally, in women, left ventricular diastolic function indices such as eft atrial volume index (LAVI) and E/e' were deteriorated, while left ventricular remodeling expressed by relative wall thickness (RWT) and the clinical AS stage were more advanced. There were no sex differences in 1-year outcomes of TAVR. However, multiple regression analyses revealed that predictors for cardiovascular events in women were clinical frailty scale, LAVI and RWT (odds ratio [OR]: 1.57, p = 0.017; OR: 1.01, p = 0.020; OR: 45.21, p < 0.001; respectively), whereas predictors in men were atrial fibrillation and past smoking (OR: 4.01, p = 0.008; OR: 2.88, p = 0.049; respectively). CONCLUSIONS: Women TAVR recipients had worse left ventricular diastolic function and left ventricular remodeling, which had significant impacts on the TAVAR outcomes. Early interventions may be beneficial especially for women.

Emergency PCI and TAVR for Acute Myocardial Infarction in Severe Aortic Stenosis Patients.

Transcatheter aortic valve replacement (TAVR) is a viable alternative for patients with symptomatic severe aortic stenosis. Acute myocardial infarction is a contraindication to TAVR. The efficacy of emergency TAVR combined with percutaneous coronary intervention for patients presenting with acute myocardial infarction, severe aortic stenosis, and cardiogenic shock remains an explorable subject.

Digital Determinants of Health: Evaluating the Impact of Information and Communication Technology on Chinese Health Outcomes.

BACKGROUND: The new generation of network information technology has become a significant tool to promote public health. The application of information and communication technology (ICT) in the traditional medical industry has changed the medical service model, improved the public medical service system, and provided diversified medical services to the public. OBJECTIVE: This paper discusses the impact of ICT on residents' health, and analyzes the possible heterogeneity impact in different groups and its impact mechanism using the China Family Panel Studies (CFPS) data and a fixed-effects model. METHODS: The ordinary least squares estimation method was adopted to quantitatively identify the impact mechanism of ICT applications on residents' health. Multisource big data were collected, including the CFPS questionnaire (gender, age, marriage status, work status, income level, smoking, sports, and insurance participation), regional economic development, as well as service industry development. The quantitative phase involved conducting in-depth investigation across 25 Chinese provinces. Then, a quantitative analyse-based study empirically tested the effects of internet applications on residents' health by matching macro data and micro survey data. After controlling for these identified factors, the data were tested using ordinary least squares and fixed effect models, with the assistance of STATA version 14 to measure and validate the proposed model. RESULTS: The regression results support the conclusion that ICT can significantly improve residents' health (p < 0.001). After a series of robustness tests through replacing explanatory variables and choosing appropriate exogenous policy shocks, the results still hold. We analyse the possible heterogeneous effects and conclude that the health-promoting effect of ICT is stronger among middle-aged individuals, high-income groups, women, urban residents, unmarried individual, those who engage in sports and non-smokers. CONCLUSIONS: Our study confirms a significant association between ICT applications and residents' health and reveals substantial heterogeneity in this effect. It also provides insights into how to apply internet information to better realise disease surveillance and prevention goals.

Impact of the invasively measured flow-gradient pattern on clinical outcomes and ventricular remodeling after transcatheter aortic valve implantation in patients with severe aortic stenosis and preserved ejection fraction.

AIMS: To investigate clinical outcomes and cardiac remodeling according to cardiac magnetic resonance (CMR) of the invasively measured different flow/gradient entities of severe aortic stenosis (AS) with preserved left ventricular ejection fraction (EF) after transcatheter aortic valve implantation (TAVI). METHODS AND RESULTS: All consecutive patients with preserved EF and severe AS undergoing right heart catheterization and treated with TAVI between 2007 and 2017 were split into four groups: normal-flow high-gradient (NF-HG n = 113, 25.9%); low-flow high-gradient (LF-HG n = 190, 43.6%); normal-flow low-gradient (NF-LG n = 50, 11.5%); and low-flow low-gradient (LF-LG n = 83, 19%). Patients with LF were older (81.9 ± 6 vs. 80.1 ± 6, p = 0.004); had a higher rate of atrial fibrillation (45.8% vs. 27.6%, p < 0.001); and had a higher EuroScore (p = 0.002). Significant improvement of functional status was noted in all four subgroups. However, the benefit at 30 days was more pronounced in HG patients. In CMR, at 6 months, we observed a significant regression of LV mass in NF-HG, LF-HG, and LF-LG but not in NF-LG patients. Patients with HG AS showed a lower rate of all-cause mortality at 5 years follow-up compared to LG AS (42.3% vs. 58%; p = 0.024). No difference in long-term mortality was observed between LF and NF AS (43.6% vs. 50%, p = 0.87). CONCLUSION: In patients with severe AS and preserved EF, patients with all invasively measured flow-gradient entities improved functionally after TAVI. High-gradient AS-regardless of the flow status-showed the most pronounced LV mass regression at 6-month CMR follow-up, had the best clinical improvement, and the lowest 5-year all-cause mortality after TAVI.

Hydrophilic Cationic Surface Modification Confers Simultaneous Antibacterial and Antithrombotic Properties to Blood-Contacting Devices.

The clinical application of blood-contacting medical devices carries lethal risks such as sepsis and vascular embolism, with thrombosis and bacterial infection being core complications that severely threaten device safety. Although cationic surface modification strategies exhibit broad-spectrum antibacterial properties without the risk of bacterial resistance, non-specific adhesion induced by electrostatic effects both diminishes antibacterial efficacy and exacerbates thrombotic risk. Hydrophilic modification techniques are extensively employed in anti-adhesion surface coating research. This study introduces hydrophilic modifications onto cationically modified catheter surfaces, effectively reducing non-specific adhesion to achieve sustained dual antibacterial and anti-thrombotic efficacy. Through redox-initiated radical polymerisation, polyhexamethylene guanidine (PHMG) and the zwitterionic compound 2-methacryloyloxyethyl phosphorylcholine (MPC) were covalently grafted onto the polyurethane (PU) catheter surface. Following in vitro and in vivo antibacterial and blood cell adhesion assays to determine the optimal PHMG-MPC ratio exhibiting concurrent hydrophilicity, potent antibacterial activity, and anti-thrombotic properties, intravascular implantation studies validated its efficacy. In summary, the strategy of surface-modifying PU with PHMG/MPC (PU-PM) resolves issues associated with cationic surface modifications arising from non-specific adhesion. This renders it more suitable for clinical requirements in blood-contacting devices, significantly enhancing its potential for clinical translation. STATEMENT OF SIGNIFICANCE: 1. Through redox-initiated polymerisation, methylacrylamidated polyhexamethylene guanidine (PHMG-MA) and 2-methacryloyloxyethyl phosphatidylcholine (MPC) were covalently bonded to the polyurethane surface, achieving hydrophilic modification of the cationic surface. 2. This synergistic modification strategy achieves functional integration of antibacterial and antithrombotic properties, overcoming the performance limitations imposed by the non-specific adhesion associated with single cationic modification techniques.

Design and rationale of the EMPagliflozin after Aortic Valve Replacement (EMPAVR) study: a randomized clinical trial.

INTRODUCTION: Left ventricular (LV) hypertrophy and dysfunction secondary to aortic stenosis (AS) are key components of the disease's underlying pathophysiology. Previous trials suggest that up to 1/3 of patients do not benefit symptomatically after aortic valve replacement (AVR), which could be explained by insufficient LV remodeling. Sodium‒glucose cotransporter-2 (SGLT2) inhibitors are effective in heart failure (HF) and have been shown to improve LV remodeling (change in LV mass). METHODS: The EMPAVR study is an investigator-initiated, randomized, placebo-controlled, and double-blinded trial comparing the effect of empagliflozin to placebo in patients with severe and symptomatic AS undergoing transcatheter aortic valve implantation (TAVI). The primary outcome for the EMPAVR trial is the difference in LV mass indexed to body surface area (measured by cardiac CT) from pre-AVR to 6 months post-AVR. Patients are randomized in a 1:1 ratio to 180 days of treatment. DISCUSSION: To the best of our knowledge, the EMPAVR study is the first placebo-controlled trial investigating the effects of SGLT2 inhibition in patients following TAVI because of AS. The EMPAVR study has the potential to pave the way for treatment of the LV in valvular heart disease and may help patients worldwide and expand our understanding of aortic stenosis. TRIAL REGISTRATION: The EMPAVR study was registered in December 2024 (Clinical Trial Registration number: NCT06171802) before enrollment of the first patient. All patients will provide oral and written informed consent. The EMPAVR study is approved by the Regional Committee on Health Research Ethics and the Danish Medicines Agency.

Estimated Pulse Wave Velocity as a Marker of Blood-Pressure-Dependent Arterial Load and Ventricular-Vascular Interaction in Severe Aortic Stenosis Before and After Transcatheter Aortic Valve Replacement.

BACKGROUND: Severe aortic stenosis (AS) increases left ventricular afterload and disrupts ventricular-vascular coupling. Transcatheter aortic valve replacement (TAVR) promptly relieves valvular obstruction, but its immediate effects on blood pressure-dependent arterial load and ventricular-vascular interactions are not fully clarified. Estimated pulse wave velocity (ePWV), derived from age and mean arterial pressure, is a convenient surrogate of global arterial load. The study aimed to assess ePWV before and after TAVR and its relationship with ventricular function and inflammatory biomarkers. METHODS: In this retrospective observational study, 100 elderly patients with severe AS undergoing TAVR underwent detailed clinical, laboratory, and echocardiographic assessments before and after the procedure. Arterial stiffness was quantified using ePWV, while left ventricular geometry and systolic function were evaluated by standard echocardiography. Post-procedural reassessment was performed at hospital discharge (median 8 days after TAVR). RESULTS: TAVR led to a modest but significant reduction in ePWV (from 12.79 ± 1.54 to 12.39 ± 1.54 m/s, p < 0.01) and improvement in left ventricular ejection fraction (LVEF) (from 44.89 ± 9.2% to 46.7 ± 7.95%, p < 0.01). Higher baseline ePWV correlated with unfavorable left ventricular remodeling and systolic dysfunction, and post-procedural ePWV remained linked to right ventricular performance. Before TAVR, ePWV and LVEF were both associated with inflammatory biomarkers, relationships that disappeared after intervention. CONCLUSIONS: Overall, ePWV functioned as an integrated measure of ventricular-vascular interaction and global hemodynamic load, though its interpretation post-TAVR requires caution due to direct blood pressure dependence and confounding by acute procedural inflammation.

Leadless or Transvenous pacemakers following TAVR: A systematic review and meta-analysis.

INTRODUCTION: Transcatheter aortic valve replacement (TAVR) is frequently associated with conduction disturbances and arrhythmias, often requiring permanent pacemaker (PPM) implantation in an elderly, high-bleeding-risk population. Leadless pacemakers (LPMs) reduce pocket and lead-related complications and have demonstrated noninferior safety compared with transvenous pacemakers (TVP) in non-TAVR populations. However, comparative data in the post-TAVR setting are lacking. METHODS: We systematically searched Pubmed, Cochrane, Embase, Web of Sciences and Scopus for studies comparing LPM vs. TVP following TAVR. Random effects models were used to calculate risk ratios (RRs) with 95% confidence intervals (CIs) for all-cause mortality, device-related complications, re-hospitalization and vascular access site complications. Statistical analysis was performed with R software, version 4.2.3. RESULTS: Six retrospective studies comprising 10,681 patients were included, of whom 874 (7.56%) underwent LPM implantation. Compared with TVP, LPM was associated with a significant reduction in device related complications (RR 0.46; 95% 0.25-0.83; p < 0.011) and vascular access site complications (RR 0.15; 95% CI 0.03-0.68; p = 0.011). There was no significant difference in re-hospitalization (RR 0.82; 95% CI 0.23-3.12; p = 0.76). LPM was associated with a higher risk of all-cause mortality (RR 1.61; 95% CI 1.01-2.57; p = 0.047). CONCLUSIONS: Among these six retrospective studies, LPM use following TAVR was associated with fewer device-related and vascular access complications compared with TVP, albeit with a higher risk of all-cause mortality at 2 years. However, this finding likely reflects a selection bias in non-adjusted baseline characteristics rather than device inferiority. No significant differences were observed in re-hospitalization between the two strategies. Prospective studies are required to confirm or refute these findings.

Temporal change in patients with mitral annular calcification after successful aortic valve intervention.

BACKGROUND: Patients with severe aortic valve stenosis and concomitant mild to moderate mitral stenosis (MS) or mitral regurgitation (MR) from mitral annular calcification (MAC) often undergo aortic valve replacement (AVR) while sparing the mitral valve. This study aimed to analyze the rate of progression of mitral valve disease in patients with MAC undergoing AVR. METHODS: A retrospective cohort study was conducted on 147 patients with MS and/or MR and MAC undergoing AVR at Allina Health in 2012-2022. The rate of progression for MR, MS, left ventricular ejection fraction (LVEF), and survival probability were assessed at a median follow-up of 2.0 (1.24-3.70) years. RESULTS: The mean age was 78 ± 10 years. Most patients were female (66%) with NYHA class III symptoms (70%) prior to AVR, and the majority underwent TAVR (93%). Most patients had MS ranging from trace to moderate range (90%) and MR ranging from trace to moderate range (91%) prior to the procedure. There was no significant change in MS or MR severity, or mortality (p = 0.47) based on MAC severity within the follow up duration. CONCLUSION: Overall, patients with MAC with moderate or less MS and/or MR and aortic stenosis had no significant change in MS or MR severity and no need for mitral valve intervention during 6 years of follow-up after AVR.

In-hospital outcome of Transcatheter Aortic Valve Implantation at Shahid Gangalal National Heart Centre, Kathmandu, Nepal.

BACKGROUND: Transcatheter aortic valve implantation (TAVI) has emerged as a well-established treatment for severe aortic stenosis since its first application in humans in 2002. In Nepal, the inaugural TAVI procedure was performed in February 2022 at the Shahid Gangalal National Heart Centre. This study aims to share our initial experiences and outcomes of TAVI at our center. METHODS: We conducted a retrospective observational study involving all patients who underwent TAVI at our facility between February 2022 and February 2024. This report details patients' baseline clinical characteristics, procedural data, complications, and in-hospital outcomes. RESULTS: A total of 19 patients underwent TAVI during the study period. The age of patients ranged from 59 to 90 years, with a mean age of 75.2 ± 7.5 years; 10 patients (52.6%) were female. Four cases (21.1%) involved patients with bicuspid aortic stenosis. Baseline mean aortic valve area measured 0.8 ± 0.1 cm², and the pre-procedural mean pressure gradient was 52.2 ± 10.1 mmHg. Post-procedure, two patients (10.5%) required permanent pacemaker implantation. The balloon-expandable valve was utilized in 12 cases (63.2%), while the self-expandable valve was used in 7 cases (36.8%). The overall procedural success rate was 100%, and all patients were discharged following TAVI, with a mean hospital stay of 4.5 ± 1.8 days. A mild paravalvular leak occurred in one patient (5.3%). Post-TAVI, the mean aortic valve pressure gradient decreased to 8.1 ± 2.6 mmHg. CONCLUSIONS: The outcomes of our initial TAVI procedures are promising, with in-hospital complication and mortality rates comparable to international standards, reinforcing the safety and efficacy of this intervention within our setting.

Safety and efficacy of transcatheter aortic valve replacement for native pure aortic valve regurgitation.

AIMS: Transcatheter aortic valve replacement has become the standard of care for high-risk patients with aortic stenosis. Considering the unique procedural challenges posed by native pure aortic regurgitation (NPAR), our aim was to evaluate the early and mid-term results of off-label transcatheter aortic valve replacement (TAVR), investigating the possibility of brief Veno-Arterial extracorporeal membrane oxygenation (VA ECMO) support for most complex procedures. METHODS: We retrospectively enrolled 65 consecutive patients, who underwent TAVR for NPAR because they were deemed ineligible for surgery. Patients with aortic valve calcification or stenosis were excluded. Primary endpoints were technical and device success according to the VARC-3 criteria. Secondary endpoints were clinical efficacy at 1 year and absence of at least moderate paravalvular leak. RESULTS: Patients' mean age was 76.15 ± 8.91. We adopted light sedation and local anesthesia in 60 patients (92.3%). High-risk patients (53.8%) were briefly supported with percutaneous femoro-femoral VA ECMO, allowing safer and more precise valve deployment. One intraprocedural death was recorded (1.5%). Although the overall 30-day mortality was 7.7%, primary composite outcomes were significantly better in the second half of the population (P = 0.023 and P = 0.026). Only one moderate paravalvular leak (1.5%) was detected at 1-month follow-up. Clinical efficacy at 1 year was 76.3%, being available for 38 patients. CONCLUSION: TAVR is still considered an off-label approach for NPAR because of the increased stroke volume and absence of annular and leaflet calcification, which might increase the complication rate. Nonetheless, a standardized approach, with the aid of brief VA ECMO support for complex cases, should be considered a safe and valid option in high-volume centers for inoperable patients.

Soft hydrophilic interfaces boost endothelial selectivity of bioactive peptides for long-term vascular graft patency.

The surface modification of bioactive molecules is thought to aid endothelial cell adhesion, which is crucial for achieving rapid endothelialization of vascular grafts and thus ensuring long-term patency. However, conventional hydrophilic coatings possess inherent limitations in resisting nonspecific adsorption, making it difficult to maintain selectivity for endothelial cells in complex blood environments. As a result, the deposition of nonspecific proteins and cells on the surface may trigger neointimal hyperplasia and luminal stenosis, ultimately leading to graft failure. This study proposed a soft hydrophilic coating that combines a low elastic modulus with high hydrophilicity and site-specifically grafted the endothelial cell-selective YIGSR peptide via click chemistry. The coating featured a dual physical-chemical antifouling mechanism. Compared to traditional hard hydrophilic coatings, the soft hydrophilic coating showed improved resistance to protein and non-target cell adhesion (such as fibroblasts, smooth muscle cells, and inflammatory cells) in complex biological environments, while maintaining the selective pro-adhesive function of YIGSR peptides for endothelial cells. By specifically interacting with integrin receptors on the endothelial cell surface, the coating facilitated firm endothelial attachment and upregulated vinculin expression, thereby contributing to the formation of a functional endothelium. Notably, in rat and rabbit in vivo small vascular graft replacement models, this coating significantly promoted rapid and functional endothelialization and ensured long-term patency of the grafts. This study provided a new strategy to address the rapid loss of in vivo bioactivity in existing coatings and offered valuable insights for the design of next-generation cardiovascular implants.

Tirzepatide therapy reduces subclinical leaflet thrombosis and paravalvular leak after transcatheter aortic valve replacement in obese patients: The TAVR-MET trial.

BACKGROUND: Obesity is increasingly recognized as a critical modifier of outcomes following transcatheter aortic valve replacement (TAVR), predisposing patients to subclinical leaflet thrombosis (SLT), hypo-attenuated leaflet thickening (HALT), and paravalvular leak (PVL). Metabolic inflammation, endothelial dysfunction, and pro-thrombotic states associated with obesity contribute to impaired bioprosthetic valve healing. Tirzepatide, a dual glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptor agonist, has demonstrated robust metabolic, anti-inflammatory, and vascular protective effects. However, its impact on post-TAVR valve performance has not been previously evaluated. OBJECTIVES: To determine whether tirzepatide therapy initiated before TAVR and continued post-procedure reduces the incidence of HALT and PVL in obese patients undergoing TAVR. METHODS: TAVR-MET was a prospective, randomized, open-label, multicenter trial enrolling obese patients (BMI ≥ 30 kg/m2) undergoing transfemoral TAVR. Patients were randomized to tirzepatide therapy or standard care. The primary endpoint was HALT incidence at 6 months assessed by 4D-CT or transesophageal echocardiography (TEE). Secondary endpoints included PVL severity, major adverse valve events (MAVE), inflammatory biomarker changes, weight reduction, and bleeding outcomes. RESULTS: Among 260 randomized patients, tirzepatide therapy significantly reduced HALT incidence (8.4% vs 21.6%, p = 0.002) and ≥ mild PVL (10.7% vs 25.3%, p = 0.006) at 6 months. Tirzepatide was associated with marked reductions in CRP and body weight without an increase in major bleeding. Multivariable analysis identified tirzepatide use, CRP reduction >30%, and BMI <32 kg/m2 at follow-up as independent predictors of HALT absence. CONCLUSIONS: Metabolic modulation with tirzepatide significantly improves post-TAVR valve healing and hemodynamics in obese patients. These findings introduce a novel cardio-metabolic strategy to reduce structural valve complications following TAVR. TRIAL SUMMARY: TAVR-MET STUDY: The TAVR-MET trial was a prospective, randomized, multicenter study designed to evaluate whether metabolic modulation with tirzepatide, a dual GIP/GLP-1 receptor agonist, could improve bioprosthetic valve outcomes following transcatheter aortic valve replacement (TAVR) in obese patients. Obesity is increasingly recognized as a key determinant of post-TAVR complications, particularly subclinical leaflet thrombosis (HALT) and paravalvular leak (PVL), driven by chronic inflammation, endothelial dysfunction, and a prothrombotic state. Tirzepatide has demonstrated potent weight-reducing, anti-inflammatory, and vascular protective effects, but its role in structural valve outcomes had not previously been explored. The trial enrolled 260 obese patients (BMI ≥ 30 kg/m2) undergoing transfemoral TAVR across eight high-volume centers. Participants were randomized to receive tirzepatide initiated four weeks before TAVR and continued for 12 months, or standard care alone. All patients received guideline-directed antithrombotic therapy. The primary endpoint was the incidence of HALT at six months assessed by advanced imaging. Secondary endpoints included PVL severity, major adverse valve events, inflammatory biomarker changes, weight reduction, and bleeding outcomes. At six months, tirzepatide therapy was associated with a significant reduction in HALT compared with standard care, as well as a marked decrease in ≥ mild paravalvular leak. These structural valve improvements were accompanied by substantial weight loss and significant reductions in systemic inflammatory markers, without an increase in major bleeding or adverse safety signals. Multivariable analysis confirmed tirzepatide use and inflammation reduction as independent predictors of improved valve outcomes. In conclusion, the TAVR-MET trial provides the first clinical evidence that targeted metabolic therapy can favorably influence bioprosthetic valve healing after TAVR. These findings support a novel cardio-metabolic strategy for improving post-TAVR outcomes in obese patients and highlight the importance of addressing metabolic inflammation alongside procedural excellence in contemporary structural heart interventions.

False-negative results of combined endobronchial and endoscopic ultrasound in mediastinal staging of lung cancer.

INTRODUCTION: Accurate assessment of mediastinal lymph node involvement is crucial for treatment planning in lung cancer. Combined endobronchial and endoscopic ultrasound (CUS) offers high sensitivity and negative predictive value (NPV), but false negative (FN) results remain a concern due to their potential impact on treatment strategies. AIM: We aimed to analyze factors associated with FN CUS results in patients with lung cancer. MATERIAL AND METHODS: We conducted a retrospective analysis of a prospective database of adult patients with lung cancer clinical stage I-IVA, staged using positron emission tomography (PET), computed tomography (CT), and CUS, who underwent lung resection. The analyzed data included age, sex, body mass index (BMI), tumor histology and grade, lobar location, stage of the disease and maximum standardized uptake values (SUVmax) of the primary tumor and lymph nodes. RESULTS: Among 775 analyzed patients, there were 86 (11%) FN results. The risk of FN CUS results was significantly associated with female sex (p = 0.014), adenocarcinoma histology (p = 0.039), higher clinical stage determined using both CT (p = 0.001-0.036) and PET (p = 0.001-0.028), higher SUV of N2 nodes (p < 0.001), and higher SUV of N1 nodes (p = 0.012). No significant association was found between the risk of FN CUS results and patients' age (p = 0.421), BMI (p = 0.921), or primary tumor characteristics, including lobar location (p = 0.29-0.99), grade (p = 0.67-0.88), and SUVmax (p = 0.12). CONCLUSIONS: FN CUS results are more likely in women, with adenocarcinoma histology and higher clinical stage determined using CT and PET. Age, BMI, and primary tumor lobar location, grade, and SUVmax are not predictors of FN.

How Sex and Race/Ethnicity Influence Interventional Cardiology Outcomes: What Do We Know?

Despite substantial advances in interventional cardiology, profound disparities in access to care and clinical outcomes remain across racial/ethnic and sex groups. These inequities arise from a complex interplay of biological differences, structural barriers, and sociocultural determinants that shape disease recognition, treatment allocation, procedural decision-making, and long-term follow-up. A further driver is the limited understanding of cardiovascular disease in female patients and racial/ethnical minorities, largely attributable to their persistent underrepresentation in clinical research, thereby restricting the external validity of evidence and perpetuating gaps in practice. This review explores how social and biological dimensions intersect to influence risk profiles, clinical presentation, procedural strategies, and secondary prevention in contemporary practice, focusing on the 2 most widely performed interventions in cardiology: percutaneous coronary intervention and transcatheter aortic valve replacement. It also highlights how such differences are often not integrated into standardized pathways of care, allowing inequities to persist even in the era of advanced cardiovascular technologies. Ultimately, it may serve as a call to action: advancing equity in interventional cardiology requires more than representative trial enrollment. It demands reform in study design, systematic stratification of outcomes, and structural change in care delivery to ensure that innovations in cardiovascular medicine benefit all patients.

Evanescent Hyperemia: An Underrecognized Cutaneous Manifestation of Postural Orthostatic Tachycardia Syndrome.

Postural orthostatic tachycardia syndrome (POTS) is characterized by orthostatic tachycardia with associated symptoms including presyncope, fatigue, dizziness, and gastrointestinal complaints, among others. In addition to cardiovascular and neurologic features, autonomic dysfunction may involve other organ systems. We report a rare case of transient evanescent hyperemia occurring during presyncopal episodes in a patient with POTS, highlighting a potentially underrecognized dermatologic sign of autonomic dysfunction. We present a 19-year-old female with known POTS and a complex medical history including pituitary adenoma (prolactinoma), secondary adrenal insufficiency, gastroparesis, severe malnutrition, and pelvic floor dysfunction, who was admitted for recurrent presyncope, syncope, and collapse. Her presentation was multifactorial. Contributing factors included autonomic instability, cabergoline-related effects, and nutritional compromise. During hospitalization, she developed recurrent episodes of transient, sharply demarcated erythematous patches affecting the face, chest, and upper extremities that coincided with presyncope and resolved spontaneously without intervention. Dermatology evaluation supported a diagnosis of evanescent hyperemia in the setting of autonomic dysfunction associated with POTS. Diagnostic workup included serial laboratory testing, electrocardiography, echocardiography, neuroimaging, and multidisciplinary specialty consultations. Transthoracic echocardiography demonstrated a patent foramen ovale with preserved cardiac function, without evidence of structural heart disease contributing to her symptoms. Management required a multidisciplinary approach, including stress-dose intravenous hydrocortisone for adrenal insufficiency, adjustment of cabergoline due to suspected medication-related bradycardia, continuation of fludrocortisone for volume support, and initiation of nasoduodenal tube feeding for nutritional rehabilitation. This case illustrates a transient cutaneous finding temporally associated with presyncope in a patient with POTS and complex comorbidities. Awareness of such skin changes during symptomatic episodes may provide supportive clinical clues to underlying autonomic dysfunction, particularly in diagnostically challenging presentations.

Paroxysmal Supraventricular Tachycardia With Wolff-Parkinson-White (WPW) Syndrome: A Therapeutic Dilemma During Pregnancy.

Arrhythmias are among the most common cardiac complications during pregnancy, occurring in women with or without underlying structural heart disease. Early recognition and timely management are crucial to achieving the best possible maternal and fetal outcomes. Supraventricular arrhythmias are particularly frequent during pregnancy. Wolff-Parkinson-White (WPW) syndrome is a rare pre-excitation disorder characterized by the presence of an accessory pathway and can occasionally lead to life-threatening arrhythmias. The exact prevalence of WPW syndrome predisposing to supraventricular tachycardia (SVT) in pregnancy is not known. We present a case of a 28-year-old woman in her second trimester of pregnancy presenting with sudden-onset palpitations. She was hemodynamically stable on presentation, and her electrocardiogram (ECG) recording demonstrated SVT with a heart rate of 226 beats per minute. After a failure of vagal maneuvers, she was successfully treated with intravenous adenosine. Her subsequent ECG was consistent with WPW syndrome with delta waves. This case highlights the complexities in managing a case of SVT in pregnancy with WPW syndrome during its acute phase and follow-up. With pregnancy being a risk factor for an arrhythmogenic state, the presence of an accessory pathway may further increase the risk of fatal arrhythmia. Management should be approached keeping both maternal and fetal outcomes in perspective.

Rate-Dependent Painful Left Bundle Branch Block (PLBBB) in a Structurally Normal Heart.

Painful left bundle branch block (PLBBB) is a rare and often underdiagnosed cause of exertional chest pain in patients without structural heart disease or coronary obstruction. We report the case of a woman in her fifties with well-controlled hypertension and no family history of sudden cardiac death, who presented with exertional chest tightness. During an exercise stress test, her typical symptoms appeared concurrently with a transient, rate-dependent LBBB, which resolved during recovery with normalization of the QRS. Cardiac biomarkers, echocardiography, and coronary angiography were normal, confirming a structurally normal heart. Beta-blocker therapy led to marked symptomatic improvement and good tolerance to a structured exercise program. Rate-dependent PLBBB is a benign but clinically relevant conduction disturbance that can mimic myocardial ischemia. Recognition of this entity is essential to avoid unnecessary invasive investigations and to guide appropriate management focused on heart rate control and symptom relief.

Evolution of Clinical Indications for Mitral Valve Transcatheter Edge-to-Edge Repair.

Mitral valve transcatheter edge-to-edge repair (M-TEER) has evolved from a highly specialized intervention to an essential treatment option for patients with severe mitral regurgitation (MR) who are unsuitable candidates for surgery. Moreover, current guidelines support the use of M-TEER in both secondary MR and selected cases of primary MR. In addition to these established indications, data from clinical trials and registries indicate that M-TEER is associated with improved short-term outcomes compared with conservative therapy in acute MR after myocardial infarction, and is beneficial in more complex scenarios, such as advanced heart failure, hypertrophic obstructive cardiomyopathy, and mitral annulus calcification. Meanwhile, combined strategies, such as repairing the mitral and tricuspid valves simultaneously, adding M-TEER to transcatheter aortic valve replacement, or performing this procedure alongside left atrial appendage closure, are gaining ground as practical ways to address the broader needs of these high-risk patients. More recently, M-TEER has been used in patients with moderate MR, as this stage is now recognized to be associated with adverse outcomes. Overall, current evidence supports M-TEER as a safe and versatile therapy across an expanding range of clinical scenarios. Nonetheless, ongoing studies will help further clarify long-term outcomes and refine patient selection.

Intelligent Decision Support for Transcatheter Aortic Valve Replacement: Machine Learning Spans From Anatomical Assessment to Dynamic Risk Modeling.

This study aimed to investigate the application of machine learning (ML) in transcatheter aortic valve replacement (TAVR) and to demonstrate that, owing to the unique strengths of ML, this field outperforms conventional approaches in both preoperative assessment and postoperative prediction of TAVR. Nonetheless, TAVR is the preferred treatment option for medium- and high-risk patients with aortic stenosis, a common valvular disease, because of the associated minimally invasive nature and rapid recovery. However, challenges remain in preoperative evaluation and in predicting postoperative complications. Thus, ML technology offers innovative solutions for these challenges. This study provides an overview of current ML applications in TAVR and evaluates the associated benefits in measuring preoperative anatomical parameters and predicting postoperative complications. Indeed, the superiority of ML models for preoperative planning can be assessed by comparing ML model-derived data with measurements from senior and junior observers across various aortic root anatomical parameters. Additionally, this review discusses the challenges of applying ML in TAVR, including data acquisition, privacy protection, and model generalizability. The ongoing advancement of artificial intelligence (AI) technologies, particularly the integration of explainable AI and federated learning, is expected to enhance the accuracy and personalization of preoperative planning and postoperative prediction for TAVR. This progress will facilitate broader application of these technologies, ultimately benefiting a wider patient population.

Peripartum Cardiomyopathy in Obstetric Practice: A Case Series.

BACKGROUND: Peripartum cardiomyopathy is a rare but potentially life-threatening form of pregnancy-associated heart failure that occurs in the last month of pregnancy or within the first few months following delivery in women without preexisting cardiac disease. The clinical presentation often overlaps with normal physiological changes of pregnancy and the puerperium, leading to delayed diagnosis and increased maternal morbidity. Imaging modalities such as chest X-ray and echocardiography play a crucial role in early recognition and confirmation of the disease. OBJECTIVES: To describe the clinical presentation, diagnostic imaging findings, management strategies, and maternal outcomes of peripartum cardiomyopathy encountered in obstetric practice. MATERIALS AND METHODS: This case series includes five women diagnosed with peripartum cardiomyopathy and managed at a tertiary care teaching hospital over a 2-year study period from January 2024 to December 2025. Detailed clinical data, including obstetric profile, timing of presentation, symptoms of heart failure, chest X-ray findings, two-dimensional echocardiographic parameters, treatment instituted, and maternal outcomes, were collected and analyzed. Diagnosis was established based on clinical features of heart failure supported by imaging evidence of left ventricular systolic dysfunction in the absence of prior structural heart disease. RESULTS: All five women presented in the late third trimester or early postpartum period with symptoms such as breathlessness, orthopnea, fatigue, and pedal edema. Chest X-ray findings included cardiomegaly with associated pleural effusion, predominantly left-sided, in selected cases. Two-dimensional echocardiography demonstrated global left ventricular hypokinesia with reduced ejection fraction in all patients. Multidisciplinary management involving obstetricians, cardiologists, and critical care specialists was instituted. With timely diagnosis and appropriate medical management, all patients showed clinical improvement and survived the acute episode. CONCLUSION: Peripartum cardiomyopathy remains an important cause of maternal morbidity in obstetric practice. A high index of suspicion, early use of diagnostic imaging such as chest X-ray and echocardiography, and coordinated multidisciplinary management are essential for improving maternal outcomes and reducing the risk of long-term cardiac dysfunction.

Alpha-Gal Syndrome-A Case Series of Successful Transcatheter Mammalian-Derived Aortic Valve Replacements.

Alpha-gal syndrome (AGS) is an IgE-mediated hypersensitivity to galactose-α-1,3-galactose, an oligosaccharide found in mammalian tissues, including bovine or porcine-derived bioprosthetic valves and heparin. Concerns exist regarding perioperative hypersensitivity reactions in patients with AGS undergoing cardiac surgery involving xenogeneic materials. We present three patients with documented AGS who underwent transcatheter aortic valve replacement (TAVR) using bovine or porcine-derived bioprostheses. All patients underwent a preoperative evaluation by allergists, and two received no pharmacological pre-treatment. Intraoperative heparin administration was without adverse reactions in all cases. Postoperative courses were uncomplicated, with no evidence of immediate or delayed allergic responses. Follow-up periods ranged from 4 to 6 years without structural valve deterioration attributable to AGS. These cases demonstrate that patients with AGS can safely undergo TAVR with bovine or porcine-derived valves and heparin, provided they are appropriately evaluated and monitored. Despite theoretical concerns, perioperative hypersensitivity appears to be rare in this population, supporting the feasibility of xenogeneic valve use in AGS patients.

Influence of physiological and pharmacological factors on conducted electrical device safety thresholds.

Conducted electrical devices (CEDs) deliver brief, high-voltage pulses that depolarise peripheral motor nerves and produce transient neuromuscular incapacitation. Although these pulse characteristics generally remain well below myocardial stimulation thresholds, deaths temporally associated with CED exposure have raised concerns that physiological or pharmacological factors present during deployment may reduce the cardiac safety margin or precipitate fatal arrhythmias. This review examines the potential effects of sympathetic activation, metabolic acidosis, myocardial ischaemia, heart failure, hyperthermia, alcohol, antipsychotics, cocaine, methamphetamine and MDMA on myocardial stimulation thresholds and their possible contribution to arrhythmogenic collapse. These factors generally either increase myocardial rheobase or produce only modest reductions in excitation threshold, typically insufficient to permit direct myocardial capture by short-duration CED pulses. In contrast, the same factors may markedly increase baseline arrhythmia vulnerability through conduction slowing, dispersion of refractoriness, autonomic excess, abnormal calcium handling, hypoxia, acidosis and increased myocardial oxygen demand. The evidence reviewed does not support a primary role for direct CED-induced myocardial depolarisation in most reported fatalities. However, CED deployment is itself an acute painful, stressful and incapacitating event. In vulnerable individuals with stimulant intoxication, acidosis, hyperthermia, hypoxia, impaired ventilation or structural heart disease, CED exposure may contribute indirectly to a multifactorial pathway to cardiopulmonary collapse, even where direct myocardial capture is unlikely.

Prediction of peri-procedural cerebrovascular accidents in patients with severe peripheral artery disease undergoing transcatheter aortic valve replacement.

OBJECTIVES: Several models have been evaluated for the prediction of transcatheter aortic valve replacement (TAVR)-related cerebrovascular accidents (CVA). The HOSTILE registry recently investigated TAVR outcomes in patients with severe peripheral artery disease (PAD), assessed using a multi-parameter score (HOSTILE score). Among patients treated with transfemoral access (TFA), higher HOSTILE score was associated with higher rates of CVA. We sought to assess the efficacy of different modalities of risk estimation for TAVR-related CVA prediction in a population with severe PAD. METHODS: The predictive ability of the risk assessment modalities was compared using the area under the receiving-operator characteristic (ROC) curve and Harrell's C-statistic. The pre-defined outcome was any CVA occurring within 30 days after TAVR. RESULTS: The study population consisted of 1707 patients, 518 (30.3%) treated via TFA and 1189 treated via transthoracic and trans-axillary routes. The CHA2DS2-VASc and the HOSTILE score showed fair performance only in the TFA cohort (AUC 0.68, 95% CI 0.53-0.83, and 0.68, 95% CI 0.55-0.81, respectively); values of CHA2DS2-VASc >5 and HOSTILE >6 exhibited the best discriminatory ability. The highest risk group (CHA2DS2-VASc >5 and HOSTILE >6) showed a five-fold higher incidence of CVA as compared to the other groups (incidence 6.7%; HR: 5.38, CI95%: 1.80-16.01; p = 0.003). CONCLUSIONS: In a population of patients with severe PAD treated with TAVR via TFA, the integration of a clinical score (CHA2DS2-VASc score) with a purely anatomical one (HOSTILE score) increased the discriminative ability towards 30-day CVA. Further analyses are needed in order to prospectively evaluate this strategy in different cohorts.

HALP score adds prognostic information beyond STS for 2-year mortality after transcatheter aortic valve implantation: a two-center retrospective cohort study.

BACKGROUND: Conventional risk scores such as the Society of Thoracic Surgeons (STS) score are widely used for risk assessment in patients undergoing transcatheter aortic valve implantation (TAVI), yet they may not fully capture systemic inflammatory and nutritional burden. The hemoglobin-albumin-lymphocyte-platelet (HALP) score is an integrated biomarker reflecting inflammation and nutritional reserve. OBJECTIVES: To investigate the association between HALP and 2-year mortality after TAVI and to evaluate whether HALP provides incremental prognostic information beyond STS. METHODS: This two-center retrospective cohort included 544 consecutive TAVI patients. The primary endpoint was all-cause death within 2 years after TAVI (binary outcome: yes/no). Independent predictors were assessed using multivariable logistic regression (HALP scaled per 10-unit increase). Discrimination was evaluated by receiver operating characteristic (ROC) analyses for HALP, STS, and a combined STS+HALP model. RESULTS: Within 2 years, 154 patients (28.3%) died. Patients who died had higher STS scores and lower HALP scores. HALP showed weak negative correlations with STS and EuroSCORE II (r ≈ - 0.11). In multivariable analysis, HALP remained independently associated with mortality (per 10-unit increase: OR 0.859, 95% CI 0.770-0.960; p = 0.007), while STS score was also independent (OR 1.112, 95% CI 1.045-1.184; p = 0.001). Discrimination was modest for HALP (AUC 0.591) and STS (AUC 0.622), and higher for the combined model (AUC 0.663). CONCLUSIONS: HALP is independently associated with 2-year all-cause mortality after TAVI and yielded a higher AUC when incorporated into the STS model, suggesting incremental prognostic information beyond conventional risk assessment.

Novel echocardiographic markers for the assessment of pulmonary hypertension in infants.

UNLABELLED: Pulmonary hypertension (PH) confers significant morbidity and mortality in infants. Risk limits utilization of cardiac catheterization for diagnosis. Pulmonary-artery-acceleration-time (PAAT) and eccentricity-index (EI) are echocardiographically-measured surrogates in adults but data in infants is limited. OBJECTIVE: Evaluate the association of PAAT and EI with catheterization-derived hemodynamic measurements in infants without structural heart disease. METHODS: This retrospective review included 30 cardiac catheterization studies performed in infants. Echocardiograms performed within one month of catheterization were reviewed. Multiple linear regression and agreement analyses were conducted between catheterization and echocardiographic data for the presence and severity of PH. RESULTS: PAAT was significantly associated with mean pulmonary artery pressure (r-square = 0.34, p < 0.003) and pulmonary vascular resistance (r-square = 0.21, p < 0.039). EI was not associated. Agreement of severity of PH by echocardiographic and catheterization data was fair (kappa = 0.29). CONCLUSIONS: In infants, PAAT is associated with invasive hemodynamic measurements, while EI is not associated. These measures do not improve upon other echocardiogram-derived estimates of PH.

Syntabulin promotes heart failure by enhancing SR-mitochondria tethering and impairing mitofission.

AIMS: Mitochondrial dysfunction is a critical driver of heart failure (HF). Syntabulin (SYBU), known for its role as a motor linker at the outer mitochondrial membrane in neuronal system, has recently been suggested as a heart failure-associated gene. However, the role of SYBU in regulating cardiac function remains unclear. METHODS AND RESULTS: Pressure overload-induced cardiac hypertrophy and HF was produced by transverse aortic constriction (TAC) in mice and phenylephrine (PE) stimulation in neonatal rat ventricular myocytes (NRVMs). SYBU expression was significantly increased in hypertrophic mouse hearts and patient hearts with dilated cardiomyopathy. The cardiac-specific upregulating SYBU expression, achieved via recombinant adeno-associated virus driven by cardiac troponin T promoter, led to increased cardiomyocyte death and worsened heart failure under hypertrophic conditions. In contrast, SYBU knockdown mitigated PE-induced cardiomyocyte injury. Structured illumination microscopy (SIM) and analysis of mitochondria-associated endoplasmic reticulum membrane (MAM) fractions revealed that SYBU localizes to ER-mitochondria contact sites. SYBU enhances sarcoplasmic reticulum (SR)-mitochondria tethering through interactions with RyR2 and SERCA2, leading to mitochondrial Ca2+ overload and impaired mitochondrial respiratory capacity. Furthermore, excessive mitochondrial Ca2+ triggered ER stress and PKA activation, inducing phosphorylation of Drp1 at Ser637, and ultimately disrupting mitochondrial fission and mitophagy. CONCLUSION: Our findings established a critical role of SYBU in promoting HF by inducing cardiomyocyte injury via increasing SR-mitochondria tethering and impairing mitochondrial fission and mitophagy. Therefore, targeting SYBU and its downstream signaling pathways could be a promising therapeutic strategy to restrain HF in pressure overload - induced cardiac hypertrophy.

The COPD-augmented R₂CHA₂DS₂-VA score: development and internal assessment for predicting one-year outcomes after transcatheter aortic valve implantation.

BACKGROUND: Existing CHA₂DS₂-VASc-based scores incompletely capture the prognostic impact of chronic obstructive pulmonary disease (COPD) and of graded renal dysfunction in patients undergoing transcatheter aortic valve implantation (TAVI). We acknowledge that the score's development in a high-risk, high-comorbidity cohort may produce optimistic performance estimates that require attenuation through external validation. We aimed to develop a novel COPD-augmented R₂CHA₂DS₂-VA (COPD-R₂CHA₂DS₂-VA) score that systematically integrates quantitative renal function and COPD, and to internally assess its discriminative performance for one-year all-cause mortality and major adverse cardiovascular events (MACE). METHODS: In this single-center, retrospective cohort study, 622 consecutive patients undergoing TAVI for severe aortic stenosis (2018-2024) were analyzed. The COPD-R₂CHA₂DS₂-VA score was constructed as a prespecified clinical tool by augmenting the R₂CHA₂DS₂-VA framework with COPD (1 point) and refining renal dysfunction into two graded estimated glomerular filtration rate strata (eGFR 30-59 mL/min/1.73 m²: 1 point; eGFR < 30: 2 points). Discriminative performance was evaluated using receiver operating characteristic curve analysis with bootstrap internal validation (2,000 resamples) and compared with established CHA₂DS₂-VASc-based scores. Multivariable logistic regression assessed the independent prognostic value of the score treated as a continuous variable. RESULTS: The COPD-R₂CHA₂DS₂-VA score demonstrated encouraging discriminative ability for one-year all-cause mortality (apparent area under the curve [AUC] 0.946, 95% CI 0.926-0.971). As a prespecified tool with fixed component weights, bootstrap internal validation confirmed negligible optimism (mean optimism - 0.00014), with bias-corrected AUC identical to the apparent value. The addition of COPD significantly improved mortality discrimination over the R₂CHA₂DS₂-VA score (ΔAUC + 0.033, p = 0.0001). For one-year MACE, the apparent AUC was 0.806 (95% CI 0.765-0.852); the addition of COPD did not significantly enhance MACE discrimination (ΔAUC + 0.001, p = 0.853). In multivariable analysis, each one‑point increase in the COPD-R₂CHA₂DS₂-VA score was independently associated with 3.52-fold higher odds of one-year mortality (95% CI 2.45-5.06, p < 0.001) and 2.02-fold higher odds of MACE (95% CI 1.67-2.46, p < 0.001). The bias-corrected AUC of the full multivariable model was 0.973 (95% CI 0.962-0.984) for mortality and 0.795 (95% CI 0.752-0.841) for MACE. CONCLUSIONS: The COPD-R₂CHA₂DS₂-VA score demonstrated encouraging discriminative ability for one-year all-cause mortality after TAVI in this single-center development cohort (apparent AUC 0.946). However, this high discriminative performance is likely influenced by the elevated comorbidity burden in our cohort and the single-center design, and should be interpreted as an upper-bound estimate. The addition of COPD provides a statistically significant but clinically modest incremental improvement for mortality (ΔAUC + 0.033, p = 0.0001), with no significant enhancement for MACE (ΔAUC + 0.001, p = 0.853). These findings are preliminary and hypothesis-generating; urgent external validation in diverse, prospective cohorts is essential before any clinical application can be considered. At present, this score should be regarded as a development-phase, hypothesis-generating tool that complements rather than replaces guideline-recommended instruments such as STS-PROM and EuroSCORE II. The score's clinical utility remains unproven.

Bicuspid aortic valve stenosis is characterized by increased angiogenesis, inflammation, and a higher valvular-to-systemic calcification ratio than tricuspid aortic valve stenosis.

Calcific aortic valve stenosis is the most common valvular heart disease requiring treatment. Although both tricuspid (AVS) and bicuspid (bAVS) aortic valve stenoses become calcified and functionally impaired in advanced stages, the pathophysiology of these conditions remains unclear. We investigated this using a multitechnology approach on explanted AVS, bAVS, and aortic regurgitation (AR) control valves. Because of technical limitations in processing heavily calcified aortic valve tissue, we established Kawamoto's film method for human aortic valve tissue, enabling the production of well-preserved cryosections and high-quality immunostainings. Both bulk RNA-seq analysis and immunostainings revealed that angiogenesis, inflammation, and calcification are key features distinguishing bAVS from AVS. In fact, we found that angiogenic genes and CD31+ cells, as well as inflammatory genes and CD45+ cells, are significantly elevated in bAVS. The most striking difference between bAVS and AVS was the prominent expression of specific genes involved in tissue calcification, such as matrix metallopeptidase 12 (MMP12), dentin matrix acidic phosphoprotein 1 (DMP1), and proteoglycan 4 (PRG4), along with approximately 1.7-fold increased calcification as shown by micro-CT and von Kossa staining analysis in bAVS. These findings were corroborated in a retrospective analysis of 1108 AVS and bAVS patients who underwent transcatheter aortic valve implantation (TAVI). The bAVS patients exhibited significantly stronger aortic valve calcifications (1.6-fold) but a significantly lower vascular calcification burden. These data further suggest that AVS and bAVS are distinct disease entities, with bAVS exhibiting increased local inflammation, angiogenesis, and calcification, findings that may guide future therapeutic strategies.

An assessment of the accuracy of a novel peripheral artery disease scoring system to identify obstructive coronary artery disease in patients with severe aortic stenosis.

BACKGROUND AND AIMS: Peripheral arterial disease (PAD) and coronary artery disease (CAD) are both clinical manifestations of atherosclerosis, sharing pathobiological features with aortic stenosis (AS). Pre-transcatheter aortic valve replacement (TAVR) planning routinely includes CT assessment of aorto-iliac and common femoral arterial disease. The aim was to assess the feasibility and accuracy of a novel PAD scoring system (Hostile score) to exclude obstructive CAD pre-TAVR. METHODS: Peripheral CTs of patients pre-TAVR, between 2019 and 2023, were retrospectively analysed and Hostile score calculated (low score ≤ 8.5, high score > 8.5). Obstructive CAD was defined as diameter stenosis ≥50% on invasive angiography. Feasibility and reproducibility of Hostile score was assessed. ROC analysis was performed to assess the accuracy of Hostile score to exclude obstructive CAD. RESULTS: 350 patients included (age 82 ± 7.2 yrs); 78% hypertension; 29% diabetes, 59% CKD and obstructive CAD present in 32.6%. Median Hostile score was 5 (IQR 2-8.9) with a median analysis time of 2.14 min (IQR 1.68-4.40). There was excellent intra-observer correlation (r = 0.91, 95%CI 0.84, 0.96) and a good interobserver correlation (r = 0.84, 95% CI 0.72, 0.91). Sensitivity, specificity, positive and negative predictive value of Hostile score to exclude obstructive CAD was 91.1%, 58.8%, 82.1% and 76.1%, respectively, with a diagnostic accuracy of 80.6% (AUC 0.82). Patients with high Hostile score had increased risk of all-cause mortality (OR 2.13, 95%CI 1.13, 4.02, p = 0.02). CONCLUSION: Hostile score has a high sensitivity and accuracy for excluding obstructive CAD in patients with severe AS and was associated with a higher all-cause mortality. Incorporating Hostile score as a screening tool on TAVR-CT may potentially reduce the requirement for invasive angiography.

Radial arterial versus left ventricular dP/dt for assessment of contractility in patients undergoing transcatheter aortic valve replacement: a retrospective observational study.

BACKGROUND: Left ventricular (LV) contractility is a core characterization of cardiac function that provides therapeutic guidance in both chronic and acute patient care. Measurement of the change in pressure over time in the left ventricle (LV dP/dt) is a clinical gold standard for evaluating cardiac contractility but is invasive and has associated risks. Measurement of dP/dt from a radial arterial pressure catheter offers a less invasive and safer alternative. Studies comparing these two measurements are limited and have conflicting conclusions. The objective of this study was to evaluate the correlations between LV and radial arterial dP/dt and clarify the clinical utility of radial dP/dt. METHODS: This was a retrospective observational study carried out at a large tertiary academic medical center. Data was collected from the electronic medical records of patients who underwent transcatheter aortic valve replacement (TAVR) with an Edwards Acumen IQ transducer attached to the radial arterial catheter to measure dP/dt. Concurrent measurements of dP/dt were recorded from LV and radial arterial catheters before and after TAVR. Comparisons included Bland-Altman analysis, concordance changes following TAVR, Spearman correlations and linear regression analysis. RESULTS: Bland-Altman analysis before TAVR demonstrated a bias between LV and radial measurements of 621 ± 396 mmHg/s with 95% limits of agreement from - 155 to 1397 mmHg/s. After TAVR, the bias decreased to 54 ± 412 mmHg/s, with 95% limits of agreement from - 754 to 862 mmHg/s. Concordance analysis of the changes following TAVR demonstrated an inverse relationship with a decrease in LV dP/dt and an increase in radial dP/dt observed in 73% of the patients. Correlation analysis before TAVR revealed Spearman r = 0.16 (95% CI: -0.06,0.37). After TAVR there was no significant change in the correlation coefficient, Spearman r = 0.09 (95% CI: -0.14, 0.31), but the slope of the best-fit regression line increased from 0.48 (95% CI: 0.44, 0.53) to 0.88 (95%CI: 0.80, 0.97). CONCLUSION: Severe aortic stenosis impacts the relationship between LV and radial measurements of dP/dt. Following TAVR the correlation remains poor, but linear regression analysis suggests radial measurement of dP/dt may have the clinical utility to characterize directional changes of contractility within an individual patient. TRIAL REGISTRATION: Clinical trial Number: not applicable. The study protocol was reviewed by the institutional human subjects research committee, which waived the need for written, informed consent. As a quality improvement project designed to evaluate the clinical utility of radial arterial dP/dt measurement it was not registered on the ClinicalTrials.gov website.

Focal pulsed field ablation of ventricular tachycardia in patients with structural heart disease: procedural characteristics, acute endpoints and early-to-midterm outcomes.

BACKGROUND: Catheter ablation is an established therapy for ventricular tachycardia (VT) in structural heart disease (SHD), but radiofrequency ablation is limited by lesion depth and challenges in targeting intramural substrate. Pulsed field ablation (PFA) induces irreversible electroporation and may offer advantages for ventricular substrate modification. However, clinical data on focal PFA for VT remain limited. OBJECTIVE: To evaluate procedural characteristics, acute efficacy, safety, and outcomes of focal PFA for VT in patients with SHD. METHODS: In this single-center study, 16 consecutive patients with SHD underwent VT ablation using focal PFA. Acute success was defined as noninducibility of any sustained or nonsustained VT at the end of the procedure. VT recurrence during follow-up was assessed by implantable cardioverter-defibrillator interrogation and Holter monitoring. RESULTS: Mean age was 66±11 years, 9 (64%) patients had nonischemic cardiomyopathy, and mean left ventricular ejection fraction was 43±11%. Septal substrate was targeted in 11 (69%) patients. Mean procedure time was 138±34 minutes, with 58±26 PFA applications per case. Acute procedural success was achieved in 14 of 16 patients (88%). Major complications occurred in 1 patient (6%), who developed pericardial tamponade; no deaths, strokes, or myocardial infarctions occurred. During a median follow-up of 130 days, VT recurred in 3 patients, yielding 81% freedom from VT recurrence. CONCLUSION: Focal PFA for VT in SHD was feasible and was associated with high acute noninducibility and encouraging early freedom from VT recurrence, including in predominantly septal substrates. Larger studies are needed to define durability and optimal dosing strategies.

Risk of Aortic Root Rupture in Bicuspid Aortic Stenosis: The ABC Sizing Algorithm for SAPIEN 3 Valves.

BACKGROUND: This study evaluated the ability of the ABC Bicuspid Sizing Algorithm to predict aortic root rupture in patients treated with transcatheter aortic valve replacement using SAPIEN 3 valves. METHODS: We conducted a retrospective multicenter study among 15 centers in 7 countries of aortic root rupture cases and controls without root complications. Computed tomography analysis was performed blinded to rupture status. The ABC algorithm was applied to classify risk (high-risk criteria): (1) annular oversizing >10%, (2) intercommissural distance - valve diameter ≤1 mm, (3) maximum sinus diameter - valve diameter <6 mm alone, or (4) maximum sinus diameter - valve diameter 6 to 8 mm with contrast calcium volume >1000 mm3 and raphe + contralateral or ipsilateral leaflet calcium volume >800 mm3, (5) protruding nodular intercommissural distance calcium or full-length calcification of both leaflet edges. RESULTS: A total of 170 patients were included (23 ruptures and 147 controls). Cases exhibited higher total calcium volume (median: 1498 mm3 versus 826 mm3; P<0.001), smaller intercommissural distance difference (median: -0.15 versus 1.19 mm; P=0.009), smaller maximum sinus difference (median: 6.79 versus 9.19 mm; P<0.001), and greater annular oversizing (median: 6.57% versus 3.51%; P=0.047). The presence of any high-risk criterion had a sensitivity of 100% (95% CI, 85.7%-100%) and a specificity of 89.1% (95% CI, 83.1%-93.2%) for the identification of rupture cases. The diagnostic odds ratio was 374.5 (95% CI, 21.7-6459.9), with a positive likelihood ratio of 9.19 and a negative likelihood ratio of 0.023. CONCLUSIONS: High calcium volume, narrow sinus dimensions, and excessive valve oversizing were associated with aortic root rupture. The ABC algorithm showed promising performance for risk stratification of patients with bicuspid anatomy being considered for treatment with a SAPIEN 3 valve.

Impact of primary tumor SUVmax on PET accuracy in mediastinal lymph node staging of non-small cell lung cancer (NSCLC).

BACKGROUND: Positron emission tomography (PET) using 18-fluorodeoxyglucose (18-FDG) is the primary imaging modality for mediastinal staging of lung cancer. Higher standardized uptake value (SUVmax) reportedly correlates with more aggressive and more readily detectable tumors. However, high-quality scientific evidence regarding the correlation between primary tumor SUVmax and PET performance in detecting mediastinal lymph node metastases remains limited. OBJECTIVES: To analyze the correlation between 18-FDG SUVmax and the diagnostic yield of PET, as well as the impact of clinical factors such as age, sex, body mass index (BMI), primary tumor lobar location, and histological type on this relationship. MATERIAL AND METHODS: This retrospective analysis utilized an institutional database and included a consecutive cohort of patients who underwent lung cancer surgery. RESULTS: In the overall cohort of 774 patients, PET demonstrated sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of 59%, 76%, 27%, and 92%, respectively. Significant differences in sensitivity were observed between the SUVmax < 10 and SUVmax > 15 groups (p = 0.007), as well as between the SUVmax 10-15 and SUVmax > 15 groups (p = 0.001). Significant differences in NPV were found between the SUVmax < 10 and SUVmax 10-15 groups (p = 0.011). Logistic regression analysis revealed no association between the risk of false negative (FN) PET results for detecting N2 disease and patient characteristics, primary tumor lobar location, or histological type. CONCLUSIONS: Our study confirms that higher SUVmax values of the primary tumor correlate with improved PET diagnostic performance in assessing mediastinal lymph node metastasis. A novel finding of this study is that clinical variables such as age, BMI, sex, tumor location, and histological type did not significantly influence the risk of FN results. The main limitations of this study are its retrospective design and single-institution cohort, which may not fully represent the diversity of patient demographics, disease characteristics, and treatment practices across different healthcare settings and populations.

Sex-based differences in long-term mortality after TAVR among patients with bicuspid aortic valve.

BACKGROUND: Sex-related disparities after transcatheter aortic valve replacement (TAVR) have been described in tricuspid aortic stenosis, but long-term data in bicuspid aortic valve (BAV) stenosis remain limited. AIMS: To evaluate sex-based differences in long-term mortality and predictors of outcomes after TAVR in patients with BAV stenosis. METHODS: We retrospectively analyzed 327 patients with BAV stenosis (183 men, 144 women) who underwent TAVR from 2014 to 2025. Baseline, anatomic, procedural, and clinical outcomes were compared by sex. Cox models evaluated predictors of all-cause mortality and exploratory sex interactions. RESULTS: Over a median follow-up of 4.5 years by reverse Kaplan-Meier analysis, 93 deaths occurred (57 men, 36 women). Men had more coronary artery disease and greater aortic valve calcium burden than women (median 3519 vs 1815 AU; p < 0.001). Long-term mortality did not differ significantly by sex, although a nonsignificant late trend toward worse survival was observed in men (31.1% vs 25.0%; log-rank p = 0.095). Older age independently predicted mortality, while higher STS score and prior CABG demonstrated borderline associations. Exploratory interaction analyses identified sex interactions for eGFR (HR 0.965, 95% CI 0.944-0.987; p = 0.002) and diabetes (HR 0.217, 95% CI 0.076-0.620; p = 0.004). Higher eGFR was associated with lower mortality among women, whereas diabetes was associated with mortality among men. CONCLUSIONS: Long-term mortality after TAVR for BAV stenosis did not differ significantly by sex. Exploratory findings suggest selected clinical comorbidities may be more informative than the anatomic parameters evaluated in this cohort.

Sympathetic neurons exacerbate atherosclerosis by modulating macrophage function via the NPY/Y1R axis.

BACKGROUND AND AIMS: Neuroimmune crosstalk is increasingly recognized in atherosclerosis, yet the contribution of the sympathetic neuron-macrophage axis remains unclear. We investigated whether and how sympathetic innervation promotes atherosclerosis through modulation of macrophage phenotype and function. METHODS: ApoE-/- mice with or without sympathetic denervation were fed a high-fat diet to examine the role of sympathetic innervation in atherogenesis. Plaque burden and stability, inflammatory cytokine expression, macrophage phenotype, and related signaling pathways were analyzed by histopathological staining, quantitative real-time polymerase chain reaction, enzyme-linked immunosorbent assay, and Western blot. A macrophage-sympathetic neuron coculture system was used to explore neuron-macrophage interactions in vitro. The role of neuropeptide Y receptor Y1 (Y1R) was evaluated using the selective antagonist BIBO3304. RESULTS: Single-cell RNA sequencing and histopathological analyses supported a role for sympathetic neurons in atherosclerosis through regulation of macrophage function. Sympathetic denervation reduced lesion burden and improved plaque stability in ApoE-/- mice. In vitro, Y1R inhibition significantly attenuated proinflammatory cytokine expression in a macrophage-sympathetic neuron coculture system. In vivo, targeting Y1R with BIBO3304 reduced total atherosclerotic area and necrotic core size, decreased the proportion of proinflammatory macrophages, and enhanced plaque stability. Mechanistically, NPY/Y1R signaling promoted macrophage polarization toward a proinflammatory phenotype by activating the p38 and JNK pathways. CONCLUSIONS: Sympathetic signaling accelerates atherosclerosis by driving proinflammatory macrophage polarization through the NPY/Y1R axis. Targeting sympathetic inputs or Y1R may offer a therapeutic approach for suppressing vascular inflammation and promoting plaque stabilization.

Leaflet resection improves valve expansion and hemodynamic performance in redo TAVI with balloon- and self-expanding transcatheter heart valve configurations.

BACKGROUND AND OBJECTIVE: Redo transcatheter aortic valve implantation (redo-TAVI) is increasingly carried out to treat degenerated transcatheter heart valves (THV). Residual calcified leaflet tissue from the first valve may impair second-valve expansion and thus prosthesis-patient mismatch and hemodynamic alterations. While leaflet laceration techniques mitigate coronary obstruction, the biomechanical impact of complete leaflet resection remains poorly understood. This study aims to evaluate the structural and hemodynamic effects of transcatheter leaflet resection in redo TAVI for different valve sizes and devices. METHODS: Finite element and smoothed-particle hydrodynamics (SPH) simulations were performed on a patient-specific TAVI model. Redo-TAVI was simulated with and without leaflet resection using both the balloon-expandable Sapien 3 and self-expanding Evolut PRO devices under different THV-in-THV configurations. Expansion and eccentricity indices, effective orifice area (EOA), and mean pressure gradient (PG) were quantified. RESULTS: Leaflet resection consistently improved second-valve expansion and reduced eccentricity, particularly at the annular level. In size-matched balloon-expandable redo-TAVI, annular expansion increased by approximately 30% and eccentricity decreased by nearly 50%. In mismatched size configurations, eccentricity was reduced by >80%. Hemodynamic performance improved accordingly, with EOA increasing by 11-24% and PG decreasing by 21-38% across redo TAVI scenarios. CONCLUSIONS: Findings demonstrated that leaflet resection improves redo-TAVI valve structural and flow performance by reducing asymmetric mechanical constraint from residual leaflet tissue of the degenerated device. The present computational framework provides a valuable tool to guide the optimization of transcatheter system designed to completely resect and remove degenerated valve leaflets prior to redo TAVI.

Premature ventricular complexes.

Premature ventricular complexes (PVCs) are early ventricular contractions triggered by an ectopic focus from within the ventricle. They are common in the general population and may cause symptoms at any burden. They become clinically relevant in the context of symptoms or complications such as PVC-induced cardiomyopathy, or, more rarely, PVC-triggered malignant ventricular arrhythmias. Investigating for underlying structural heart disease is essential in patients with clinically relevant PVCs as this will inform patient counselling and management options. Treatment is guided by symptoms or LV dysfunction associated with PVCs. Management options include conservative management, medical therapy, and catheter ablation. In this review we discuss the definition of PVCs and how they may present, outline relevant investigations for these patients, and discuss management considerations and treatment options.

Sex differences in echocardiographic left ventricular remodeling and clinical outcomes following transcatheter aortic valve implantation.

BACKGROUND: Sex-related differences in left ventricular (LV) remodeling in response to severe aortic stenosis (AS) and post-transcatheter aortic valve implantation (TAVI) remain unclear. Previous studies have demonstrated inconsistent and discordant findings regarding the relationships between LV remodeling and clinical endpoints across sexes following TAVI. More importantly, it has been shown that females with severe AS are often diagnosed later and less likely to be referred for TAVI. OBJECTIVES: We sought to evaluate sex-based differences in LV remodeling prior to and after TAVI, and to assess whether these differences were associated with long-term clinical outcomes. METHODS: We conducted a retrospective study of 977 patients with severe AS undergoing TAVI (2013-2020). Serial echocardiograms were performed at baseline (before TAVI) and at various timepoints post-TAVI. Echocardiographic parameters related to LV remodeling were extracted. Clinical outcomes (myocardial infarction [MI], heart failure hospitalization [HFH], stroke, and survival) were tracked over 10 years. RESULTS: Compared with males, females had larger baseline indexed LV end-diastolic dimension (26.5 ± 4.0 mm/m2 vs. 25.3 ± 3.5; p < 0.001), lower LV mass index[LVMI] (101.5 ± 28.0 vs. 111.5 ± 30.1 g/m2; p < 0.001), higher left ventricular ejection fraction (59.5 ± 11.13 vs. 53.8 ± 13.5%; p < 0.001), and higher LV filling pressures as indicated by a higher E/e' (18.7 ± 6.9 vs. 15.6 ± 6.2, p < 0.001). However, changes in LVMI, LV chamber size, and diastolic parameters post-TAVI were similar across sexes. Within-group analyses demonstrated that both males and females experienced favorable reverse remodeling in LV mass, LVMI, and wall thicknesses post-TAVI. No significant sex differences were observed in MI, HFH, stroke, or survival post-TAVI. CONCLUSION: Our results support that males and females present with distinct baseline cardiac phenotypes in the setting of severe AS, but both sexes experience comparable LV reverse remodeling and clinical outcomes post-TAVI. This reinforces the structural and prognostic benefit from TAVI across sexes, underscoring the importance of equitable referral and access to this intervention.

Midterm Clinical and Echocardiographic Outcomes After Transcatheter Aortic Valve Replacement in Patients With Severe Bicuspid Aortic Valve Stenosis.

BACKGROUND: Outcomes >2 years after transcatheter aortic valve replacement (TAVR) for bicuspid aortic valves (BAV) are scarce, and differences between balloon-expandable transcatheter heart valves (THVs) and self-expandable (SE-THVs) are not yet well established. METHODS: This study aims to report midterm outcomes after TAVR in patients with BAV and includes 92 patients undergoing TAVR for BAV stenosis at the University Hospital Cologne between 2018 and 2023. The primary outcomes were all-cause death, cardiovascular death, and stroke over a mean follow-up of 2.9 years. RESULTS: Among 92 consecutive patients undergoing TAVR for BAV stenosis (median age: 78.8 years), the incidence of all-cause death, cardiovascular death, and stroke was 26.1%, 18.5%, and 14.1%, respectively, at 2.9 years, with no differences between balloon-expandable THVs and SE-THVs. Pacemaker implantation tended to be more frequent in the SE-THV group. Periprocedural complications were rare, as reflected by a high Valve Academic Research Consortium-3 technical success rate of 96.7%. Postprocedural transvalvular gradients were favorable, with SE-THV showing lower values than balloon-expandable THV (8.0 versus 10.5 mm Hg, P=0.007). Moderate or severe paravalvular regurgitation was uncommon, with no differences between groups, although a trend toward more relevant paravalvular regurgitation with SE-THV was observed. CONCLUSIONS: TAVR for BAV is feasible with both SE-THV and balloon-expandable -THV, achieving high technical success and low complication rates. Hemodynamic differences were observed, but mortality and stroke did not differ significantly between groups. Overall outcomes remain suboptimal, highlighting the need for randomized trials comparing valve types and TAVR with surgery for patients with BAV.

Prognostic value of the CALLY index in patients undergoing transcatheter aortic valve implantation.

AIMS: The C-reactive protein-albumin-lymphocyte (CALLY) index is a composite biomarker reflecting inflammation, nutritional status, and immune response. This study evaluated the association of the CALLY index with all-cause mortality in patients undergoing transcatheter aortic valve implantation (TAVI). METHODS: In this retrospective study, 733 consecutive TAVI patients were classified as Low-CALLY (≤0.95) or High-CALLY (>0.95) using an ROC-derived cutoff. The primary endpoint was all-cause mortality during follow-up. Predictors of mortality were assessed using Cox proportional hazards regression, while discriminative performance and survival were evaluated by ROC and Kaplan-Meier analyses. RESULTS: Mortality was higher in the Low-CALLY group than in the High-CALLY group (57.1% vs. 19.3%; p < 0.001). The CALLY index showed moderate discrimination for mortality (AUC 0.719; 95% CI 0.681-0.757; p < 0.001). In multivariable Cox regression, Low CALLY remained independently associated with mortality in the clinical model (HR 3.31; 95% CI 2.49-4.39), STS-PROM-adjusted model (HR 3.16; 95% CI 2.37-4.22), and EuroSCORE II-adjusted model (HR 3.72; 95% CI 2.84-4.88) (all p < 0.001). Kaplan-Meier analysis showed lower survival in the Low-CALLY group (log-rank p < 0.001). CONCLUSION: The CALLY index was independently associated with mortality after TAVI and may complement established risk scores in pre-procedural risk stratification.

Sex differences in reverse remodeling after transcatheter aortic valve replacement in low-flow aortic stenosis.

OBJECTIVES: Sex-specific differences in left ventricular (LV) remodeling after transcatheter aortic valve replacement (TAVR) in low-flow aortic stenosis (LFAS) remain incompletely defined, and the influence of LFAS subtype on remodeling by sex is uncertain. The authors sought to characterize post-TAVR remodeling in LFAS by sex and subtype and identify predictors of remodeling. METHODS: This retrospective cohort study included 488 patients with LFAS (303 men, 185 women) who underwent TAVR. Smoothed conditional mean curves assessed longitudinal changes in LV mass index (LVMi), relative wall thickness (RWT), and LV ejection fraction (LVEF) through 18 months. Linear mixed models identified predictors of remodeling. RESULTS: Women more often had paradoxical low-flow low-gradient (pLFLG) AS (58.4% vs 43.6%, P = .001), whereas men more often had classical low-flow low-gradient AS (31.4% vs 13.5%, P < .001). At 1 year, both sexes showed significant improvement in LVMi, RWT, and LVEF. Men demonstrated sustained improvement in LVEF and LVMi during follow-up, whereas women showed earlier improvement followed by decline beginning around 12 months. Predictors also differed: lower LVMi after TAVR was associated with White race and less severe baseline mitral regurgitation in men, and with pLFLG subtype in women. CONCLUSIONS: Reverse remodeling after TAVR occurred in both sexes, but trajectories and predictors were sex-specific.

Neutrophil-to-Lymphocyte Ratio in Patients with Low-Flow Aortic Stenosis Undergoing Transcatheter Aortic Valve Implantation.

BACKGROUND: The neutrophil-to-lymphocyte ratio (NLR) is a marker of systemic inflammation and is associated with adverse cardiovascular outcomes. Low-flow (LF) aortic stenosis (AS) is a high-risk phenotype marked by advanced remodeling, frailty, and poor prognosis. We investigated whether NLR can improve risk stratification in patients with severe LF-AS evaluated for transcatheter aortic valve implantation (TAVI). METHODS: A total of 925 consecutive patients with severe LF-AS referred for TAVI were evaluated. Primary endpoint was all-cause mortality. RESULTS: Mean age was 79.8±9.3 years; 291 (39.0%) patients were female; 745 (80.5%) underwent TAVI. During a mean follow-up of 25.6 months, death occurred in 187 (20.2%). In spline modeling, excess mortality appeared at NLR ≥4.5 and rose thereafter. In multivariable analysis, the highest baseline quartile vs. all other quartiles of NLR was associated with increased risk of death at 5 years [39% vs. 24%; adjusted hazard ratio (HR) 1.80; 95% confidence interval (CI), 1.22-2.65; p=0.003], even after adjustments for pertinent covariates. Patients in the upper NLR quartile who underwent TAVI experienced over a 3-fold increased risk of death (HR 3.18, 95% CI: 1.93-5.24, p<0.001). The survival benefit associated with TAVI was attenuated by 57% (interaction term p=0.002, p for improved survival = 0.42). Higher NLR was associated with more frequent paravalvular leak (13.2% vs. 7.5%, p=0.05). CONCLUSION: In patients with severe LF-AS, baseline high NLR was independently associated with almost doubling of the 5-year mortality risk. Patients in the upper NLR quartile who underwent TAVI showed lower survival benefit and more frequent paravalvular leak, suggesting that systemic inflammation may influence procedural outcomes and long-term prognosis.

Urgent Transcatheter Aortic Valve Replacement in Acute Heparin-Induced Thrombocytopenia Using Argatroban and Crossover Technique.

We report an urgent transfemoral transcatheter aortic valve replacement (TAVR) performed under local anesthesia in a patient with acute heparin-induced thrombocytopenia (HIT) and severe thrombocytopenia complicated by recent gastrointestinal bleeding. Argatroban was used as the periprocedural anticoagulant, and a crossover technique enabled complete hemostasis despite a critically low platelet count. This case demonstrates that a fully percutaneous TAVR strategy using argatroban can be safely performed during acute HIT and provides a practical approach for structural heart interventions in patients at high bleeding risk.

Impact of pre-existing CIED on mid-term mortality in patients undergoing TAVR.

BACKGROUND: Previous studies reported increased mortality and rehospitalization rates in patients undergoing transcatheter aortic valve replacement (TAVR) with prior pacemaker (PM) therapy. However, the impact of different pre-existing cardiac implantable electronic devices (CIEDs), including PM and implantable cardioverter-defibrillators (ICD) and their implications on clinical outcomes after TAVR remains unclear. OBJECTIVES: This multicenter, retrospective study aimed to evaluate the association between pre-existing CIEDs and clinical outcomes after TAVR. METHODS: We analyzed data from 1,334 patients who underwent TAVR at three German tertiary care centers. Patients with pre-existing CIEDs (PM, n = 358 and ICD, n = 58) were compared with patients without a CIED (n = 918). PM patients were further stratified by indication (sick sinus syndrome (SSS) vs. atrioventricular block (AVB)). Primary endpoint was all-cause mortality at 3 years. Propensity score matching (PSM) was conducted as a sensitivity analysis for ICD patients, and a subgroup analysis was performed in patients with reduced left ventricular ejection fraction (LVEF) < 50%. RESULTS: In the overall cohort, patients with pre-existing CIEDs had higher 3-year mortality rates (no device: 28.5% vs. PM: 35.8% vs. ICD: 50.0%; p < 0.001). Patients with PM implanted for AVB exhibited significantly higher mortality than those with PM for SSS (39.8% vs. 29.2%; log-rank p = 0.030), despite comparable baseline characteristics. In PSM cohort, mortality differences were attenuated but persisted (ICD: 52.1%, PM-AVB: 45.8%, no device: 31.0%, PM-SSS: 31.3%; log-rank p = 0.045). In patients with reduced LVEF < 50% (n = 332), intergroup mortality differences were no longer statistically significant (log-rank p = 0.243). CONCLUSION: Pre-existing CIEDs, particularly ICDs and PMs implanted for AVB, were associated with increased mid-term mortality following TAVR. These differences were no longer evident in patients with reduced LVEF. Notably, patients with PMs for SSS had outcomes comparable to those without a CIED.

Prosthesis-Patient Mismatch in All-Comer Patients Undergoing Newer-Generation Self-Expanding Transcatheter Aortic Valve Replacement.

BACKGROUND: Prosthesis-patient mismatch (PPM) after transcatheter aortic valve replacement (TAVR) may affect outcomes, but its incidence and impact with contemporary self-expanding valves remain unclear. AIMS: Evaluate the frequency, predictors, and long-term outcomes of PPM in a real-world TAVR population. METHODS: We analyzed patients ≥ 18 years undergoing TAVR with current-generation self-expanding valves (Evolut FX/FX+, PRO/PRO+, Navitor, Navitor Vision) from a prospectively maintained institutional database (2017-2025). Predicted PPM was defined according to VARC-3 criteria, with all-cause mortality and heart failure hospitalization as the primary outcomes. RESULTS: Among 2989 patients (median age 80 [75-85], 50.8% female) receiving Evolut (83.3%) or Navitor (16.7%) valves, PPM occurred in 5.0% (moderate 3.7%, severe 1.3%) and declined from 6.5% in 2017 to 2.7% in 2025 (p = 0.002). Independent predictors of PPM included female sex (OR 2.04, 95% CI 1.06-3.99, p = 0.035) and valve-in-valve procedures (OR 9.60, 95% CI 3.82-25.64, p < 0.001), whereas use of the Navitor valve was associated with markedly lower odds (OR 0.07, 95% CI 0.00-0.32, p = 0.009). Patients with PPM demonstrated significantly higher post-procedural transvalvular gradients and reduced aortic valve areas (both p < 0.001). PPM was not associated with adverse long-term clinical outcomes, with no significant differences in 5-year all-cause mortality (HR 0.84, 95% CI 0.45-1.57, p = 0.592) or heart failure hospitalization (HR 1.22, 95% CI 0.84-1.77, p = 0.295). CONCLUSION: In this contemporary TAVR cohort, PPM was infrequent, and its incidence declined over time. Female sex and valve-in-valve procedures independently predicted PPM. Despite adverse hemodynamic profiles, PPM was not associated with early or long-term adverse clinical outcomes.

Flow State after Transcatheter Aortic Valve Replacement in Low-Flow Severe Aortic Stenosis: Predictors and Outcomes Across Valve Types.

BACKGROUND: Low-flow severe aortic stenosis (LFSAS) is a high-risk phenotype associated with increased mortality after transcatheter aortic valve replacement (TAVR). The prognostic value of post-procedural normalization of stroke volume index (SVi), and its variation across valve types, remain uncertain. AIMS: To evaluate the association between post-TAVR flow state and 1-year clinical outcomes among patients with LFSAS, and to determine whether this association differs between balloon-expandable valves (BEV) and self-expanding valves (SEV). METHODS: We retrospectively analyzed consecutive patients with LFSAS (SVi ≤ 35 mL/m²) who underwent TAVR at a single quaternary center from 2019 to 2022 The primary endpoint was a composite of all-cause mortality or heart-failure hospitalization at 1-year follow-up. Predictors of flow change post-TAVR were also assessed. RESULTS: Of 567 patients included, 54.9% received BEV and 45.1% SEV; 42.2% achieved flow normalization post-TAVR. The primary endpoint occurred in 13.8% of the normalized flow group and 17.4% of the maintained flow group (adjusted HR 0.82, 95% CI 0.51-1.30; p = 0.40). There was no statistically significant interaction between valve type (BEV vs SEV) and flow normalization status in the primary endpoint (Pint = 0.31). CONCLUSIONS: In multivariable analysis, post-TAVR flow normalization was not independently associated with improved 1-year outcome in patients with LFSAS. The findings suggest that underlying myocardial and systemic factors may drive prognosis more strongly than procedural flow changes.

Towards optimal valve prescription for transcatheter aortic valve replacement (TAVR) surgery: a machine learning approach.

Transcatheter Aortic Valve Replacement (TAVR) has emerged as a prominent, minimally invasive treatment for patients with severe aortic stenosis, a life-threatening cardiovascular condition. Multiple transcatheter heart valves (THV) have been approved for use in TAVR, but current guidelines regarding valve type prescription remain a topic of ongoing debate within the medical community. We propose a data-driven clinical support tool to identify the optimal valve type with the objective of minimizing the risk of permanent pacemaker implantation (PPI), a predominant postoperative complication. We synthesize a novel dataset, combining U.S. and Greek patient populations, that integrates data from three distinct sources (patient demographics, computed tomography scans, echocardiograms) while harmonizing the different encoding processes specific to each country's record system. We propose leaf-level analysis to leverage the heterogeneity of the patient populations and avoid benchmarking against uncertain counterfactual risk estimates. The final prescriptive model shows a reduction in PPI rates of 26% and 16% compared to the current standard of care in our internal U.S. population and external, Greek validation set, respectively. To the best of our knowledge, this work represents the first unified, personalized prescription strategy for THV selection in TAVR.

Association between aortic wall thrombus and stroke among patients undergoing transfemoral aortic valve replacement.

BACKGROUND: Stroke is a major adverse event following transfemoral transcatheter aortic valve replacement (TAVR), often attributed to embolization of debris from the aortic valve or aorta. This study evaluated the relationship between severe aortic wall thrombus (AWT) on pre-TAVR imaging and peri-procedural stroke in a single-center cohort. METHODS: Patients with peri-procedural stroke after transfemoral TAVR (January 2013-December 2023) were compared with a randomly selected stroke-free control group. Severe AWT on baseline CT was assessed using a validated segmental scoring system. Associations with stroke were examined using Firth penalized logistic regression, with a pre-specified multivariable model adjusting for severe aortic root calcification, pre-TAVR albumin, recent heart failure, and valve type. RESULTS: Fifty-six patients with peri-procedural stroke (mean age 82 ± 8.6 years) and 92 controls (mean age 79 ± 9.8 years) were included. Strokes occurred a median of 1.5 days (interquartile range, 0-4 days) following TAVR. Severe AWT was present in 21.4% of stroke patients versus 3.3% of controls, corresponding to a univariable odds ratio (OR) of 7.18 (95% CI 2.28-29.16, p < 0.001). In the multivariable Firth model, severe AWT remained independently associated with stroke (OR 8.98, 95% CI 2.01-49.55, p = 0.004). AWT most frequently involved the descending thoracic (43%) and abdominal aorta (54%), and less commonly the ascending aorta (9-16%). CONCLUSION: Severe AWT on pre-TAVR CT was independently associated with peri-procedural stroke in this single-center analysis. Given the retrospective design and temporal differences between groups, these hypothesis-generating findings warrant prospective validation.

Headless Pacemaker in Bradyarrhythmia After Transcatheter Aortic Valve Replacement: A Meta-Analysis.

Leadless pacemaker (LPM) offers a favorable safety profile for bradyarrhythmia, especially in patients at high risk for infection from transvenous pacemaker (TPM). However, its use for bradyarrhythmia after transcatheter aortic valve replacement (TAVR) remains unexplored. We conducted a systematic search from the inception of PubMed to November 2025. Eligible studies included adults who received a pacemaker after TAVR. Primary endpoints were overall complications and device-related complications. Secondary endpoints included all-cause mortality, device-related mortality, hospitalization for heart failure, procedure time, fluoroscopy time, and length of stay after pacemaker implantation. We included a total of 11 studies involving 11,750 patients who underwent TAVR (1243 with LPM and 10,507 with TPM). None of the patients in the LPM group experienced device-related complications, with significantly lower rates compared to the TPM group [adjusted hazard ratio (aHR) 0.35, 95% confidence interval (CI): 0.13-0.97; I2 = 0%]. Similarly, no device-related mortality was observed in the LPM group. All-cause mortality and hospitalization for heart failure were comparable between the LPM and TPM groups (aHR 1.02, 95% CI, 0.05-20.68; I2 = 25% and aHR 0.87, 95% CI, 0.24-3.17; I2 = 0%, respectively). The feasibility of LPM was also similar to TPM in terms of procedural time (MD -28.66 minutes, 95% CI, -92.36 to 35.03; I2 = 11%), fluoroscopy time (MD -1.36 minutes, 95% CI, -6.30 to 3.59; I2 = 0%), and length of stay (MD -0.53 days, 95% CI, -1.33 to 0.27; I2 = 6%). In conclusion, LPM could serve as a first-line pacing strategy in bradyarrhythmia post-TAVR due to its safer profile with comparable efficacy and feasibility to TPM.

Delirium Among Adults Undergoing Transcatheter Structural Heart Intervention: Incidence, Risk, and Clinical Phenotypes.

BACKGROUND: Delirium is an underrecognized geriatric complication after transcatheter structural heart interventions, with limited descriptive data across procedures and an uncertain association with clinical outcomes. AIMS: To quantify incidence, identify predictors, and evaluate in‑hospital outcomes of delirium after transcatheter aortic valve replacement (TAVR), transcatheter edge-to-edge mitral repair (TEER), transcatheter tricuspid valve replacement/repair (TTVR), and left atrial appendage occlusion (LAAO). METHODS: Using the National Inpatient Sample, we performed a retrospective analysis of adults undergoing TAVR, TEER, TTVR, or LAAO identified by ICD‑10 codes. Delirium was captured through validated diagnostic codes. Multivariable logistic and linear regression adjusted for demographic, clinical, and in‑hospital covariates to evaluate predictors of delirium and the independent association of delirium with clinical outcomes of interest. RESULTS: Among 151,455 weighted hospitalizations (86,940 TAVR, 15,305 TEER, 1250 TTVR, and 47,960 LAAO), delirium occurred in 2.8%, 4.0%, 4.4%, and 0.6% of cases, respectively. Delirium was independently associated with increased in-hospital mortality across all procedures (TAVR: aOR 4.5, 95% CI 2.9-6.9; TEER: aOR 2.7, 95% CI 1.1-6.6; TTVR: aOR 27.7, 95% CI 5.6-137.3; LAAO: aOR 24.5, 95% CI 5.4-110.8). Patients with delirium also had higher rates of mechanical ventilation and cardiac arrest, longer length of stay, and greater hospitalization costs. Geriatric-specific conditions, including frailty, dementia, malnutrition, and high comorbidity burden, were among the strongest predictors of delirium. CONCLUSIONS: Delirium after transcatheter structural heart interventions is strongly associated with adverse clinical outcomes and greater resource utilization. These findings underscore the importance of incorporating delirium risk stratification and targeted prevention strategies into structural heart pathways to preserve the net clinical benefit of these interventions.

Transcatheter Aortic Valve Replacement Outcomes in Patients with Chronic Inflammatory Systemic Diseases.

The clinical impact of performing transcatheter aortic valve replacement (TAVR) in patients with chronic inflammatory systemic diseases (CIDs) is not well reported. Hence, we designed this study to evaluate whether coexistence of CIDs in TAVR patients leads to worse clinical outcomes. We retrospectively studied TAVR patients at our institution between 11/21/2011 and 03/29/2024. Patients diagnosed with chronic inflammatory diseases such as rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), scleroderma, Sjögren's syndrome, inflammatory bowel disease, or other related diseases were identified using International Classification of Diseases codes. Clinical outcomes during inpatient and at one-year were compared between CIDs and no-CID patients. Our study included 2,880 TAVR patients with mean age of 79±9 years, 45% were female, and 78% were Caucasian. CIDs patients comprised 6.4% (n=185) of the total cohort. The CIDs cohort had a higher proportion of females (61.6 vs. 43.9%, p<0.001), immunosuppressive therapy (5.9 vs. 2.9%, p=0.02), NYHA class III or IV symptoms (51.9 vs. 40%, p=0.04), and higher STS score (4.1 vs. 3.4; p=0.04). In-hospital mortality (0.0 vs. 1.7%; p=0.08) was similar between the CIDs and no-CIDs groups; however, vascular complications (10.3% vs 6.1%, p=0.036) and unplanned vascular interventions (5.4 vs. 1.9%; p=0.003) were more common in CIDs patients. Survival analysis showed no difference in one-year mortality (8.9 vs. 8.91%, log-rank p=0.73) between the two groups. In conclusion, TAVR in CIDs patients is safe and has comparable immediate and one-year adverse outcomes compared to non-CIDs patients, however these patients are more prone to vascular access complications and may require more unplanned vascular interventions.

Electrocardiographic Imaging of Repolarization Abnormalities in Structural Heart Disease for Characterisation of Arrhythmogenic Phenotypes.

BACKGROUND: Electrocardiographic Imaging (ECGI) enables non-invasive assessment of 3-dimensional activation and repolarization sequences. Whether ECGI allows to detect repolarization abnormalities in relation to myocardial scar and differentiate arrhythmogenic phenotypes has not been systematically investigated. OBJECTIVE: To compare ECGI-derived activation time (AT) and activation-recovery interval (ARI) metrics in sinus rhythm in patients with structural heart disease (SHD) and evaluate their relationship to myocardial scar and VT status. METHODS: Patients who underwent 252-electrode CT-ECGI and delayed-enhancement MRI were reviewed and categorised according to presence of myocardial scar, left ventricular ejection fraction (LVEF) and history of re-entrant VT. Reconstructed unipolar activation and repolarization maps, and derived ARI maps, were co-registered with 3D MRI scar models. ARI duration, ARI dispersion and AT dispersion were estimated at ventricular and segmental levels and compared across groups and tissue types. RESULTS: 71 patients were included: 39 patients with scar+/VT+ (28.3% ischemic, LVEF 41.2±17.5%), 14 patients with scar+/VT- (37.5% ischemic, LVEF 33.3±10.6%), 9 patients with impaired LVEF/VT- (LVEF 21.9±5.6%) and 9 controls (LVEF 59.2±7.1%). In sinus rhythm, ARI duration and dispersion differed significantly between groups and tissue types (all p<0.05). Segmental ARI was longest over scar regions and dispersion higher in transmural (22.0ms [26.3]) and subepicardial scar (20.6ms [22.8], compared to subendocardial (16.5ms [16.1]) and non-scarred myocardium (15.8ms [20.3], p<0.001). ARI dispersion within scar regions was significantly higher in the scar+/VT+ compared to scar+/VT- cohort (β = -8.4ms, p=0.009). Activation dispersion was significantly increased at sites of scar compared to normal myocardium (β = -5.3ms, p<0.001) but showed only a trend toward distinguishing VT status (p=0.059). Severe LV dysfunction, even in the absence of overt myocardial scar, was also associated with significantly prolonged ARI and elevated dispersion metrics compared to controls. CONCLUSION: ECGI-derived activation-recovery interval alterations in SHD are associated with scar presence, transmurality and VT history. Segmental ARI dispersion in association with myocardial scar may potentially serve as a complementary non-invasive marker of arrhythmogenic risk.

Comparative impact of body shape index and body mass index on heart rate variability in healthy young adults: A 24-hour electrocardiographic analysis.

AIMS: We aimed to investigate the relationship between heart rate variability (HRV) and two anthropometric obesity parameters among young adults, including body shape index (ABSI) and body mass index (BMI). METHODS: We included 215 asymptomatic individuals aged 18-40 years who presented for routine health screening and had no history of structural heart disease or chronic illness. Anthropometric measurements and time-domain HRV parameters (SDNN, SDNN index, rMSSD, pNN50%) were recorded through 24-h ECG monitoring. Participants were divided into ABSI and BMI categories: low-moderate ABSI (≤ 0.079), high ABSI (> 0.079), BMI < 30 kg/m2, and BMI ≥ 30 kg/m2. The study parameters were compared between the groups. RESULTS: 67% of the study participants were female, and the mean age was 28.5 ± 8. We found a relationship between waist circumference, BMI, and certain HRV parameters. However, all investigated time-domain HRV parameters were similar between the ABSI groups, suggesting that ABSI may not reflect autonomic function as effectively as BMI among adults aged < 40 years. Nevertheless, the SDNN, SDNN index, rMSSD, and pNN50% values were significantly lower in the BMI ≥ 30 group than in the BMI < 30 group (p < 0.05). Linear regression analysis revealed significant inverse associations between BMI and all time-domain HRV parameters; however, no significant association was observed between ABSI and any time-domain HRV parameter. CONCLUSIONS: Waist circumference and BMI are inversely related to HRV parameters in young adults. The absence of this association with ABSI suggests that BMI remains a more relevant anthropometric measure of cardiac autonomic modulation in this population.

Cardio Heart Connect: Protocol for a Randomized Trial of a Commercially Available mHealth Fitness Intervention for Cardiac Rehabilitation After Transcatheter Aortic Valve Replacement.

BACKGROUND: Despite ample evidence of the benefits of cardiac rehabilitation (CR), few transcatheter aortic valve replacement (TAVR) patients participate. Commercially available mobile health offers an opportunity to deliver activity-promotion content to populations that are challenged to participate in CR. This study aims to test the efficacy of clinically controlled, commercially available fitness programming for improving physical activity and cardiovascular health outcomes designed to be initiated while patients are on waitlists for traditional CR. METHODS: The Cardio Heart Connect study is a hybrid type I effectiveness-implementation trial aiming to enroll N=200 patients who have been placed on a cardiac rehab waitlist following a TAVR procedure from the University of Colorado Hospital Heart and Vascular Center. Participants will be randomized 1:1 to the Cardio Heart Connect intervention with commercially available fitness or attention control, designed to control for technology access. At baseline, post-intervention (8 weeks), and follow-up (12 months), we will assess the primary outcome of participants' daily steps as measured by smartwatch accelerometer and secondary outcomes of interest including functional capacity (Duke Activity Status Index; VO2max), quality of life (Kansas City Cardiomyopathy Questionnaire), and cardiovascular health status (Life Essential 8). In addition, we will use mixed methodologies to evaluate the implementation of intervention using the Reach, Effectiveness, Adoption, Implementation, and Maintenance (RE-AIM) Framework. CONCLUSIONS: Commercially available fitness programs have the potential to provide more accessible opportunities for patients recovering from TAVR to engage in physical activity and may be preferred due to their customizability, convenience, and ease of scheduling. Overall, this study will provide insight into the use of commercial mHealth to promote activity following TAVR.

Mechanistic study of annular eccentricity-induced flow instability and thrombus growth in TAVI patients: a geometric sensitivity analysis.

This study investigates the potential hemodynamic penalty of post-TAVI annular eccentricity on thrombogenesis. By integrating patient-specific CTA data with a computational framework coupling multi-component transport equations and the Momentum Sink Method, we compared hemodynamics and thrombus burden between idealized circular and controlled elliptical models. Our analysis suggests that elliptical morphology may significantly alter coherent helical flow, leading to more fragmented eddies within the sinuses. This hemodynamic alteration is associated with statistically elevated mean Relative Residence Time (RRT) and Endothelial Cell Activation Potential (ECAP) ( P < 0.05 ), which correlated with an observed increase in simulated thrombus volume and surface area. These findings indicate that annular eccentricity could be a significant, biology-independent geometric factor contributing to post-TAVI thrombotic risk. Our results propose that incorporating annular morphology into postoperative assessments may provide complementary biomechanical insights for individualized anticoagulant management.

Relationship Between Position, Shape, and Deformation of Papillary Muscles and Mitral Regurgitation After Transcatheter Aortic Valve Replacement.

BACKGROUND: Moderate/severe mitral regurgitation (MR) can affect the prognosis of patients with transcatheter aortic valve replacement (TAVR). However, few studies have focused on the role played by papillary muscles (PMs). AIMS: We intend to explore the relationship between PMs and MR outcome after TAVR. METHODS: This retrospective cohort study included 1159 consecutive patients who underwent TAVR. The 125 patients who had MR ≥ 3+ grade were divided into improved MR (IMR) group and non-improved (NMR) group according to the grading of MR at 6 months after operation. MSCT was used to analyze the shape and locate the attachment of PMs. The deformation and synchrony of the PMs attachment were analyzed using two-dimensional speckle tracking. Associations with MR improvement after TAVR were explored. RESULTS: A total of 125 patients (IMR 93 and NMR 32; mean age, 72 years ± 8) were included. There was no significant difference in the deformation and synchrony of myocardium at attachment and in the PMs morphology between groups. However, the range of PM attachment was increased in the NMR group compared to the IMR group (1.94 ± 0.91 vs. 1.40 ± 0.65, p = 0.004; 2.16 ± 0.88 vs. 1.80 ± 0.80, p = 0.035). Inferior displacement of PMs (OR: 5.629; 95% CI: 1.421, 22.293; p = 0.014) was found to be an independent predictor of less MR improvement after TAVR. CONCLUSION: The PMs in the NMR group had no significant morphological tendency, but their attachment range was significantly increased and more toward apical. Inferior displacement of PMs was an independent risk factor for unalleviated MR. TRIAL REGISTRATION: ChiCTR 2000033419.

Diagnostic Adequacy of Pre-TAVI CTA Compared With ICA and Its Prognostic Association With Coronary Artery Disease.

BACKGROUND: Previous studies have investigated the concordance between pre-TAVI coronary CT angiography (CTA) and invasive coronary angiography (ICA). PURPOSE: To evaluate the agreement between pre-TAVI coronary CTA and ICA and to determine the relationship between coronary artery disease and one-year survival: MATERIALS AND METHODS: Coronary CTA findings were compared with invasive coronary angiography in patients undergoing TAVI for severe aortic stenosis at our tertiary care center between November 2023 and November 2024, with 50% and 70% stenosis used as diagnostic cut-off values. RESULTS: Ninety-five patients who underwent both coronary CTA and invasive coronary angiography prior to TAVI were included. Obstructive CAD was defined as ≥ 70% stenosis in the right coronary, left anterior descending, or circumflex artery, or ≥ 50% stenosis in the left main coronary artery. CTA findings showed strong agreement with invasive coronary angiography across all coronary arteries. At the 70% stenosis threshold, CTA demonstrated high sensitivity and specificity, with excellent interobserver agreement. Obstructive CAD was present in 82.1% of patients, with single-, two-, and three-vessel disease observed in 15.8%, 18.9%, and 47.4%, respectively. Severe carotid artery stenosis (> 70%) was observed in a minority of patients. One-year survival was 93.7% and was not associated with the presence of CAD (p = 0.466). CONCLUSION: Pre-TAVI coronary CTA shows strong agreement with invasive coronary angiography for detecting obstructive coronary stenosis and represents a practical, noninvasive option for coronary assessment before TAVI.

Long-term survival in patients with premature ventricular complexes and no structural heart disease.

BACKGROUND: Premature ventricular complexes (PVCs) are common and can cause concerns in both patients and their caregivers. In patients with structural heart disease, PVCs are associated with worse clinical outcomes. However, in patients without such disease, the prognostic implications of PVCs are more uncertain. METHODS: In this observational cohort study, we included patients who were diagnosed with PVCs at three major hospitals in Stockholm between 2010 and 2016. All included patients had normal results on echocardiography and stress test, and no history of structural heart disease. The expected survival from the age-matched, sex-matched and calendar year-matched Swedish population was obtained from the Human Mortality Database. Relative survival was estimated using the Ederer II method. RESULTS: A total of 803 PVC patients were included. Median age was 59 years, and 57% were women. In all, 185 (23%) patients had more than 10 000 PVCs per day and 86 (11%) had more than 20 000 PVCs per day. The observed survival was greater than the expected survival at 1, 5, 10 and 12 years (100% vs 99%, 97% vs 94%, 93% vs 86% and 90% vs 82%, respectively). The relative survival at 1, 5, 10 and 12 years was 100%, 104%, 109% and 111%, respectively. The median follow-up time was 10 years (maximum 14 years). CONCLUSIONS: PVC patients without structural heart disease had a favourable long-term survival, exceeding the expected survival of the general population. These results suggest that most PVC patients without structural heart disease may be given a reassuring message.

Comparative outcomes of balloon-expandable and self-expanding valves in Transcatheter aortic valve replacement: A systematic review and Meta-analysis.

BACKGROUND: Balloon-expandable valves (BEVs) and self-expanding valves (SEVs) are the two primary platforms for transcatheter aortic valve replacement (TAVR), differing in design, deployment, and hemodynamic performance. Comparative evidence on their clinical and procedural outcomes remains limited and inconsistent. METHODS: A systematic review and meta-analysis were conducted, searching PubMed, Scopus, Web of Science, and Cochrane Library up to July 2025 for studies comparing BEVs and SEVs in adults with severe aortic stenosis undergoing transfemoral TAVR. Outcomes included all-cause mortality, cardiovascular mortality, stroke, permanent pacemaker implantation, hemodynamic parameters, device success, and safety endpoints. Dichotomous and continuous outcomes were pooled as risk ratios (RR) and mean differences (MD) with corresponding 95% confidence intervals (CI) using a random-effects model. RESULTS: Fifty-three studies (n = 157,921) were included (6 randomized controlled trials, 12 prospective, and 35 retrospective cohorts). BEVs showed significant early survival benefits at 1 month (RR = 0.75, 95% CI 0.57-0.97, p = 0.03) and 6 months (RR = 0.33, 95%CI0.18-0.60, p < 0.001), with reduced cardiovascular mortality at 12 months (RR = 0.88, 95% CI 0.79-0.99, p = 0.03). Permanent pacemaker implantation rates were consistently lower with BEVs (e.g. RR = 0.75, 95% CI 0.64-0.88, p < 0.001 at 1 month). SEVs exhibited superior hemodynamics, with lower mean gradients (MD = -3.16 to -7.77 mmHg) and larger aortic valve areas (MD = +0.11 to +0.13 cm2). Long-term mortality and safety outcomes, including major bleeding, vascular complications, and myocardial infarction, were comparable. CONCLUSION: BEVs offer early survival and conduction preservation advantages, while SEVs provide superior hemodynamic performance. These findings highlight the importance of individualized valve selection based on patient-specific factors. Further randomized trials with extended follow-up are needed to evaluate long-term durability and outcomes in diverse patient populations.

Population Prevalence of Valvular Heart Disease in the United States: The PREVUE-VALVE Study.

BACKGROUND: Valvular heart disease (VHD) is associated with substantial morbidity, mortality, and health care costs, yet its contemporary prevalence among older adults in the United States is unknown. OBJECTIVES: We performed a decentralized study of older adults (PREVUE-VALVE) to determine the population prevalence of VHD among older Americans. METHODS: Individuals 65-85 years old who previously filled a prescription at CVS or Walgreens pharmacies were randomly selected; contacted via e-mail, direct mail, or text messaging; and invited to participate. Enrolled participants completed study procedures in their homes, including a comprehensive transthoracic echocardiogram. The primary endpoint was the prevalence of moderate or greater (≥ moderate) VHD, weighted to reflect the U.S. POPULATION: The co-primary endpoint was the prevalence of clinically significant VHD, which also included mild-to-moderate regurgitant disease. RESULTS: The study sample (n = 3,000) was representative of older Americans (median age 71 years, 57.1% female, 14.6% non-Hispanic Black, 9.4% Hispanic). The weighted prevalence of ≥ moderate VHD was 8.2% (95% CI: 7.0%-9.5%), which increased to 18.4% (95% CI: 16.7%-20.2%) for clinically significant VHD. Tricuspid regurgitation was the most common lesion, followed by aortic stenosis, mitral regurgitation, aortic regurgitation, and mitral stenosis. Older age, but not sex, was associated with greater prevalence. In age- and sex-adjusted analyses, non-Hispanic Black individuals had a lower prevalence of any VHD compared with non-Hispanic White individuals (adjusted RR: 0.91; 95% CI: 0.83-0.99), driven predominantly by lower rates of aortic stenosis and regurgitation. There were no significant adjusted differences in VHD prevalence between Hispanic and non-Hispanic individuals. Extrapolation of these data to the U.S. population indicates that at least 4.7 million 65-85-year-olds currently have ≥ moderate VHD, and 10.6 million currently have clinically significant VHD-values that are projected to increase to 6.5 and 14.7 million, respectively, by 2060. CONCLUSIONS: In this national in-home echocardiography study, VHD was common among older adults, with important age-related and valve-specific patterns. PREVUE-VALVE establishes the feasibility of large-scale decentralized cardiovascular imaging studies and provides a contemporary foundation for clinical and policy planning related to the burden of VHD. (Age- and Sex-Specific Prevalence of Acquired Valvular Heart Disease (PREVUE-VALVE; NCT05357404).

Longitudinal Trends and Outcomes in Transcatheter Aortic Valve Implantation: a report from the SwissTAVI Registry.

The progressive expansion of indications for Transcatheter Aortic Valve Implantation (TAVI) towards lower-risk and younger populations has raised concerns about potential outcome attenuation with increasing procedural volumes. Real-world evidence addressing this concern is limited. To assess temporal trends in patient characteristics and procedural outcomes of TAVI in a large nationwide cohort. The Swiss TAVI Registry prospectively enrolled consecutive patients undergoing TAVI in Switzerland. Baseline characteristics, procedural complications and outcomes were compared across three periods: 2011-2015, 2016-2020 and 2021-2024. The primary endpoint was major adverse cardiovascular events (MACE: all-cause mortality, non-fatal myocardial infarction, and non-fatal stroke) at one year. The secondary endpoint was 30-day MACE. Among 19'452 patients, TAVI volume increased 27% annually. Patient age (82 years) and comorbidity burden remained stable, while the proportion of women increased (51% to 58%) and the median STS score decreased (4.5% to 3.3%). Considering the expansion to lower-risk patients, 1-year MACE declined significantly from 16% to 14% to 9.1% across periods (adjusted HR 0.69, 95% CI 0.62-0.78, p<0.001). Similarly, 30-day MACE decreased from 6.9% to 5.2% to 4.0% (adjusted HR 0.66, 95%CI 0.55-0.78, p<0.001). Procedural mortality declined from 2.9% to 1.2%, periprocedural myocardial infarction from 0.4% to 0.2% and stroke from 3.2% to 2.0% (all p<0.001).Risk-adjusted TAVI outcomes improved continuously despite a significant volume increase, with improvements exceeding those expected from lower-risk patients risk profiles alone.

Predictive value of ultrasound-measured tongue base thickness for upper airway obstruction during monitored anesthesia care: a single-center prospective observational study.

PURPOSE: Monitored anesthesia care (MAC) is increasingly used for various procedures, but sedation-related upper airway obstruction may lead to hypoxemia or conversion to general anesthesia. This study evaluated whether preoperative tongue base thickness (TT), measured using ultrasonography, can predict upper airway obstruction during MAC. METHODS: In this single-center prospective observational study, adult patients undergoing transcatheter aortic valve implantation or endovascular aortic repair under MAC were enrolled. TT was measured preoperatively using submental ultrasonography. Upper airway obstruction was defined as disappearance of the capnogram that reappeared after jaw elevation. Receiver operating characteristic (ROC) curve analysis was performed to determine the optimal TT cutoff and diagnostic performance. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and likelihood ratios were calculated. The STOP-BANG score and composite criteria combining TT and STOP-BANG were also evaluated. RESULTS: Data from 42 patients were analyzed, and upper airway obstruction occurred in 21 (50.0%). The median TT was 59.8 mm in the non-obstruction group and 61.0 mm in the obstruction group (p = 0.466). The ROC analysis identified a TT cut-off value of 58 mm (area under the curve = 0.566). For TT ≥ 58 mm, sensitivity, specificity, PPV, and NPV were 76.2%, 42.9%, 57.1%, and 64.3%, respectively (LR + 1.33, LR - 0.56). Combining TT with the STOP-BANG score did not improve predictive performance. CONCLUSION: Preoperative TT measurement showed limited diagnostic performance for predicting airway obstruction during MAC, and its combination with the STOP-BANG score did not significantly improve predictive performance.

Effects of under- and overexpansion on performance of Edwards SAPIEN 3 and MyVal OCTACOR transcatheter heart valves.

Balloon-expandable Edwards SAPIEN 3 (23 mm) and MyVal OCTACOR (21.5 mm) valves were tested in 3D-printed silicone tubes using a low-pressure, water-perfused simulator with ultrasound and video monitoring. Balloons were inflated in 2 mm increments from 18 to 30 mm. Both valves were easily inflated from 18 to 24 mm with 2-3 atm inflation pressures and required 5.5 atm and 7 atm, respectively, to reach an inner diameter of 26 mm at the outflow level for the SAPIEN 3 and OCTACOR valves. Further expansion was not achievable. At 18 mm, leaflet opening was mildly asymmetric, but laminar flow was preserved. Circular geometry improved at 20 mm and normalised at 22 mm for both valves. At 24 mm, SAPIEN 3 showed trivial regurgitation, while OCTACOR exhibited a central coaptation defect with mild-to-moderate regurgitation. At 26 mm, SAPIEN 3 leaflets were maximally stretched yet functional with central regurgitation, whereas OCTACOR failed with leaflet tears at the frame attachment. These results indicate both valves can be implanted at small diameters and stepwise dilated to nominal size, tolerating overexpansion up to 3 mm for SAPIEN 3 (+13% overexpansion) and 4.5 mm for OCTACOR (+20.9% overexpansion) at outflow level, with SAPIEN 3 remaining functional and OCTACOR requiring valve-in-valve replacement. Pending clinical validation, this versatility could support their use for infant mitral and pulmonary replacements as alternatives to the Melody valve; though, under- or overexpansion should be reserved for clinically essential situations.

Escalating Diameter Buddy Balloon in Transcatheter Aortic Valve Implantation With Complex Aortic Arch.

BACKGROUND: The buddy balloon technique facilitates transcatheter heart valve (THV) crossing the native aortic valve. CASE SUMMARY: An 80-year-old female, with previous ascending aorta replacement and aortic valve replacement with bioprosthesis, was admitted to our hospital to undergo transcatheter aortic valve implantation due to bioprosthetic valve dysfunction. The self-expandable Allegra 23 mm, advanced through the right femoral artery, got stuck at the point of passage between the aortic arch and the prosthetic tube in the ascending aorta. A peripheral balloon was advanced from the left femoral artery and simultaneously inflated at the stalemate point, while pushing the valve toward the implantation site. Following failure with 5 mm and 7 mm balloons, crossing was successful with a 9 mm balloon. DISCUSSION: The standard buddy balloon technique involves the use of a single balloon diameter. Herein, we propose an escalating approach to increase chances of success and prevent potential complications, such as vessel rupture. TAKE HOME MESSAGE: The "escalating diameter" buddy balloon technique represents a safe and effective exit-strategy in case of challenges in advancing the THV system.

Optimisation of Bioinspired Fibre Architectures for 3D-Printed Polymer Heart Valves via Melt Electrowriting (MEW) Using FE Modelling and Design of Experiments (FE-DOE).

Aortic stenosis is predominantly treated through transcatheter bioprosthetic heart valve implantation. However, the materials used in these devices are prone to premature failure. Polymer heart valves provide an alternative to current commercial devices, offering materials with greater durability and customisation through fibre reinforcement. Given the wide range of available materials and structures, there is a need for a systematic and efficient approach to designing and optimising novel bioinspired polymeric leaflets. This work presents a framework that employs computational modelling and Design of Experiments (DOE) tools to optimise bioinspired, 3D-printed, fibre-reinforced polymer leaflets made using melt electrowriting (MEW). Here, finite element (FE) models are created to represent MEW fibre-reinforced polymer leaflets for application in a transcatheter aortic heart valve. The behaviour of this valve under physiological loading conditions is modelled to predict valve performance and leaflet material response. These models were first used to investigate the impact of fibre orientation on valve performance and leaflet response, thereby demonstrating the benefits of a bioinspired fibre reinforcement structure. Using a DOE approach, the structural combination of MEW fibre reinforcement and an elastomeric matrix was optimised to improve valve performance and reduce leaflet stress and strain. Overall, the framework offers an efficient and versatile methodology for optimising fibre-reinforced polymer leaflets using an in silico approach, thereby reducing the need for physical prototyping and testing of these next-generation devices during early product development.

Murray law-based quantitative flow ratio for functional assessment of coronary lesions: a systematic review and meta-analysis.

Angiography-derived coronary physiology has emerged as an attractive alternative to pressure-wire-based fractional flow reserve (FFR) for functional lesion assessment. Murray law-based quantitative flow ratio (µQFR) represents a simplified, single-view approach, but its diagnostic performance across diverse clinical settings remains incompletely defined. To evaluate the diagnostic accuracy of µQFR for identifying functionally significant coronary lesions using invasive FFR as the reference standard. We performed a systematic review and diagnostic accuracy meta-analysis in accordance with PRISMA-DTA recommendations. Studies assessing µQFR against invasive FFR (≤ 0.80) with extractable lesion-level data were included. Sensitivity and specificity were pooled using a bivariate random-effects model. Secondary analyses explored performance in patients undergoing transcatheter aortic valve implantation (TAVI) and in calcified coronary lesions. Seven studies comprising 1,826 coronary lesions were included. µQFR demonstrated a pooled sensitivity of 0.807 (95% CI 0.690-0.888) and specificity of 0.944 (95% CI 0.893-0.971), with a positive likelihood ratio of 14.41, negative likelihood ratio of 0.20, and diagnostic odds ratio of 70.6. Specificity remained consistently high, whereas sensitivity showed substantial variability. In exploratory subgroup analyses, sensitivity was 0.77 (95% CI 0.64-0.87) in TAVI patients (2 studies; 236 lesions) and 0.72 (95% CI 0.66-0.78) in calcified lesions (2 studies; 691 lesions); these findings are hypothesis-generating only. µQFR demonstrates promising diagnostic accuracy with consistently high specificity. However, its moderate sensitivity, negative likelihood ratio of 0.20, and reduced performance in calcified lesions limit its ability to safely exclude functionally significant disease. Prospective validation is required before µQFR can be recommended as a standalone decision-making tool.

Prognostic impact of iliofemoral access-site calcification volume on outcomes after transcatheter aortic valve implantation.

BACKGROUND: Transcatheter aortic valve implantation (TAVI) is increasingly performed in patients at low and intermediate risk, emphasizing the need for accurate long-term risk stratification. Although iliofemoral calcification influences procedural planning, its prognostic relevance beyond peri-procedural complications remains uncertain. OBJECTIVES: To evaluate the prognostic value of quantitatively assessed iliofemoral access-site calcification (IASC) for outcomes after TAVI. METHODS: The study included 1067 patients undergoing TAVI. Pre-procedural computed tomography (CT) was used to quantify IASC-volume along the transfemoral access route. Patients were stratified according to the median IASC-volume, and outcomes were compared using propensity score matching (PSM). The primary endpoint was all-cause mortality at 1, 3, and 5 years. Secondary endpoints included peri-procedural complications at 30 days. RESULTS: The median IASC-volume was 907 (356-1839) mm3. Patients with high IASC-volume had higher prevalence of vascular comorbidities and increased risk scores. IASC-volume was not associated with vascular or bleeding complications. The overall 1-year mortality was 11.7% and did not differ between patients with low and high IASC-volume (10.5% vs. 12.8%; p = 0.20). In contrast, patients with high IASC-volume experienced significantly higher mortality at 3 years (34.3% vs. 22.3%; p < 0.01) and 5 years (42.2% vs. 28.7%; p < 0.01). These findings remained consistent after PSM. In multivariable analysis, IASC-volume was independently associated with long-term mortality (HR 1.24, 95% CI 1.11-1.38; p < 0.01). CONCLUSION: CT-derived IASC-volume is associated with mid- and long-term mortality after TAVI, without affecting short-term or procedural outcomes. These findings suggest that IASC-volume reflects systemic disease burden and may provide incremental prognostic information beyond established risk scores.

Veno-Arterial Extracorporeal Membrane Oxygenation in High-Risk Ventricular Tachycardia Ablation: Current Evidence, Patient Selection, and Perioperative Management.

Catheter ablation is an established therapy for recurrent ventricular tachycardia (VT), but in patients with advanced structural heart disease, procedural success is often limited by acute hemodynamic decompensation during arrhythmia induction and mapping. Temporary mechanical circulatory support may improve procedural tolerance in selected high-risk cases. Among available devices, venoarterial extracorporeal membrane oxygenation (VA-ECMO) provides the most comprehensive support by combining biventricular circulatory assistance with gas exchange independent of native cardiac output, albeit at the cost of greater invasiveness and device-related morbidity.This narrative review summarizes the contemporary role of VA-ECMO in high-risk VT ablation, with emphasis on patient selection, comparative support strategies, periprocedural management, and outcomes. Available evidence, derived primarily from observational studies and small registries, suggests that VA-ECMO improves procedural feasibility by preserving systemic perfusion during sustained VT, repeated cardioversion, and prolonged activation mapping; however, current data do not support its routine use over less invasive modalities. In patients with isolated left ventricular dysfunction and preserved right ventricular reserve, an intra-aortic balloon pump or microaxial support may provide a more favorable balance between hemodynamic benefit and procedural risk, particularly when paired with planned access for rapid escalation. In contrast, VA-ECMO appears to be most appropriate in selected patients with severe biventricular dysfunction, refractory electrical storm, cardiogenic shock, severe gas exchange abnormalities, or profound intolerance to sustained VT. Preemptive and structured provisional strategies may provide greater procedural stability compared to rescue support initiated after hemodynamic collapse. Despite favorable rates of acute arrhythmia control, current evidence does not demonstrate a clear survival benefit.

Impact of Geographic Factors on Outpatient Cardiac Rehabilitation Adherence After Transcatheter Aortic Valve Implantation.

BACKGROUND: Transcatheter aortic valve implantation (TAVI) results in shorter hospital stays and earlier discharge than conventional aortic valve replacement. Postoperative cardiac rehabilitation (CR) can improve the 6-min walk distance, activities of daily living, and mental function; however, the outpatient CR (OCR) attendance rate in Japan remains low, which limits its benefits. In this study, we investigated the effect of geographic factors on OCR adherence in patients who underwent TAVI. METHODS AND RESULTS: This single-center retrospective cohort study included 95 patients with aortic stenosis admitted for TAVI at Showa Medical University Hospital between January 2019 and December 2023. The participants were categorized into the OCR continuation and non-participation (non-OCR) groups. Primary evaluations included road distance, travel time by car, and straight-line distance to the hospital, and postoperative physical function changes. Geographic factors did not differ significantly between the 2 groups at OCR initiation. However, OCR group-restricted analysis revealed that participants who completed the 5-month OCR program had significantly shorter travel times than those who discontinued. A receiver operating characteristic curve analysis revealed that travel time by car was a significant predictor of OCR dropout (optimal cut-off 19.5 min). CONCLUSIONS: This study revealed that geographic accessibility did not affect OCR initiation post-TAVI; however, it significantly impacted long-term adherence. Specifically, a travel time of >20 min led to program discontinuation.

Simplified Approach to a Child with Tachyarrhythmia.

Arrhythmias in childhood are often challenging to diagnose and treat for a pediatrician. Tachyarrhythmias may or may not be associated with underlying structural heart disease or ion channel defects, and may also occur in the post-operative setting. Symptoms vary from excessive crying, irritability and failure to thrive, to palpitations, heart failure and syncope. Knowledge of the normal 12 lead ECG (electrocardiogram) in various stages of life and its transition to adulthood is essential in order to distinguish abnormal ECG from normal variants. Management in acute settings as well as long term medical management and interventional therapies are important. Both, cardiologists as well as pediatricians should be well-versed in the diagnosis and management of tachyarrhythmias in children.

Improving structural heart disease screening: AI-ECG and novice AI-guided focused cardiac ultrasound.

Structural heart disease (SHD) causes substantial morbidity, yet early detection is limited. In this prospective study, AI-enhanced ECG and AI-guided focused cardiac ultrasound (AI-FoCUS) were assessed for detecting SHD (left ventricular EF < 40%, ≥moderate aortic stenosis, hypertrophic cardiomyopathy, or cardiac amyloidosis) in 995 adults against comprehensive echocardiography performed within 30 min of AI-FoCUS. Nine complete novices used handheld ultrasound (Philips Lumify) with real-time AI guidance (UltraSight) with images interpreted by blinded experts. AI-FoCUS was feasible in 97.3%. Prevalence was 5.0% for EF < 40%, 3.5% for ≥moderate aortic stenosis, and 8.8% for hypertrophic cardiomyopathy or amyloidosis. AI-ECG alone yielded NPV 95.8% but PPV 29.6%, limiting standalone screening. AI-FoCUS alone achieved PPV 95.4% and NPV 98.0%, however requires imaging in all. A two-step strategy (positive AI-ECG followed by AI-FoCUS) maintained high PPV/NPV (96.1%/95.6%) but limited FoCUS imaging to 47%.In this echo referral cohort, novice AI-guided FoCUS acquisition with blinded expert interpretation was feasible and accurate for detecting selected SHD phenotypes. A two-step AI-ECG then AI-FoCUS strategy reduced FoCUS utilization, but lowered sensitivity compared with AI-FoCUS for all. However, both FoCUS-based strategies were superior to AI-ECG based screening alone. This work requires further assessment and validation in lower prevalence populations.

Prophylactic bi-level non-invasive positive pressure ventilation during monitored anesthesia care for transfemoral TAVI in a morbidly obese patient with obstructive sleep apnea: a case report.

BACKGROUND: Transcatheter aortic valve implantation (TAVI) is increasingly performed under monitored anesthesia care (MAC); however, its use in patients with morbid obesity and obstructive sleep apnea (OSA) remains challenging because of the risk of hypoventilation and airway compromise. Prophylactic planned intraoperative non-invasive ventilation may offer a strategy to safely extend MAC to this high-risk population, but evidence in this setting remains scarce. CASE PRESENTATION: We report a case of transfemoral TAVI successfully performed under MAC in a 67-year-old morbidly obese patient with severe OSA using bi-level non-invasive positive pressure ventilation (NIPPV), dexmedetomidine-based sedation, and regional analgesia. NIPPV was applied perioperatively to support spontaneous ventilation and optimize oxygenation, allowing the completion of the procedure without airway intervention or conversion to general anesthesia. The patient had an uneventful recovery and was discharged on the fourth postoperative day. CONCLUSION: This case demonstrates that prophylactic bilevel non-invasive positive pressure ventilation (NIPPV) can facilitate the safe use of monitored anesthesia care during TAVI in selected high-risk patients, supporting a physiology-driven strategy to maintain spontaneous ventilation while avoiding general anesthesia.

Modifying biological heart valve leaflets using anti-fouling polymers incorporated with metal-phenolic networks for enhanced anti-thrombosis, anti-calcification and endothelialization.

Promoting endothelialization of the bioprosthetic valve is necessary to improve the performance of the valve, and good hemocompatibility ensures adequate time for the endothelialization process. In this work, metal-phenolic networks (MPNs), formed by the coordination interactions between (-)-epigallocatechin gallate (EGCG) and copper ions (Cu2+), were incorporated into the zwitterionic polymer modified glutaraldehyde crosslinked leaflets. The modified valve leaflets can prevent thrombosis and calcification mainly due to the antifouling zwitterionic polymer, and can induce enhanced endothelialization potential via the generation of nitric oxide. Bioprosthetic leaflets incorporating EGCG and Cu2+, as well as zwitterionic copolymers, contributed to the growth of endothelial cells in co-culture experiments, achieving a proliferation improvement of up to 50% compared to glutaraldehyde-crosslinked valves. Subcutaneous implantation confirmed that the modified leaflets exhibit great anti-calcification ability (with a 90% reduction in calcium deposition relative to glutaraldehyde-crosslinked valves) and reduced inflammatory response. The valve leaflets modified by EGCG, Cu2+ and zwitterionic polymers have antithrombosis and anti-calcification properties and pro-endothelialization potential.

Real-world adverse events and device failure modes of the sentinel cerebral protection system: An analysis of the FDA MAUDE database 2022 to 2026.

BACKGROUND: Stroke remains a significant complication after transcatheter aortic valve replacement (TAVR), and embolic debris generated during the procedure is a major contributor. The Sentinel Cerebral Protection System is designed to reduce periprocedural stroke and stroke-related complications, but real-world data on device-related complications remain limited. METHODS: We performed a retrospective descriptive analysis of post-marketing surveillance data from the FDA Manufacturer and User Facility Device Experience (MAUDE) database (September 2022-January 2026) to assess Sentinel-related adverse events, including deaths, injuries, and device malfunctions. Reports were categorized by event type, and findings were summarized as counts and percentages. RESULTS: A total of 340 reports were included. Malfunctions were most frequent (77.9%), followed by injuries (20.6%) and deaths (1.5%). Stroke and associated cerebrovascular events accounted for 48 of patient-related adverse events. Common device issues included difficulty in removal in 147 cases, breakage in 64 cases, and positioning problems in 57 cases. Rare complications such as detachment, contamination, and mechanical failure were also noted. CONCLUSIONS: This MAUDE database analysis found that reported Sentinel-related events were predominantly technical in nature, although clinically important adverse events were also identified. These findings provide real-world insights into device performance, highlight areas for procedural and design improvement, and underscore the importance of ongoing post-market surveillance.

Minimalist transcatheter aortic valve implantation for all? Consensus clinical guidance from Italy.

The evolution of transcatheter aortic valve implantation (TAVI) technology has enabled a shift towards less invasive, patient-centred perioperative and anaesthetic care. Current evidence from randomised trials indicates that conscious sedation and minimalist approaches are safe in appropriately selected patients, but conversion rates and patient experience highlight the need for careful case selection. The Italian expert consensus in a recent issue of the British Journal of Anaesthesia provides timely and clinically relevant guidance, supporting a default minimally invasive strategy (local anaesthesia or conscious sedation) delivered by anaesthetists, with escalation of monitoring and anaesthetic intensity only in higher-risk clinical scenarios. In the absence of robust comparative evidence for many aspects of care, Ajello and colleagues introduce a pragmatic clinical approach, individualised towards patients' needs, which helps to standardise practice, optimise patient comfort and outcomes, and reduce unnecessary invasiveness of monitoring. Future pragmatic clinical research is needed to better integrate patient-centred outcomes into anaesthetic practice.

Prognostic role of myosteatosis in predicting MACE and mortality after TAVR: insights from CT-based body composition analysis.

BACKGROUND: This study evaluated the prognostic value of computed tomography (CT)-defined myosteatosis (fat infiltration within muscle tissue) and low muscle mass (loss of muscle mass) for predicting major adverse cardiac events (MACE) and all-cause mortality among patients undergoing transcatheter aortic valve replacement (TAVR). METHODS: Myosteatosis was defined as intramuscular adipose tissue (IMAT) exceeding 8.72 cm² in men and 4.58 cm² in women at the 12th thoracic vertebra level, while low muscle mass was defined as the sex-specific first tertile of the paravertebral muscle index (PMI). The primary endpoint was MACE (cardiac death, unstable angina, nonfatal myocardial infarction, nonfatal stroke, heart failure hospitalization), the secondary endpoint was all-cause mortality. We used Cox proportional hazards regression analysis to evaluate the association between body composition and clinical outcomes after TAVR. RESULTS: A total of 371 patients (198 men and 173 women) were analyzed, 71 patients (19.1%) experienced MACE and 46 patients (12.4%) died. Myosteatosis was associated with higher risks of both MACE (HR: 2.39, 95% CI: 1.13-5.05, P = 0.023) and all-cause mortality (HR: 3.83, 95% CI: 1.54-9.53, P = 0.004). Patients with concomitant myosteatosis and low muscle mass had the worst outcomes, including MACE (HR: 5.06, 95% CI: 2.26-11.32, P < 0.001) and all-cause mortality (HR: 4.70, 95% CI: 1.30-16.95, P = 0.018). Adding myosteatosis to the clinical and low muscle mass model improved prognostic accuracy for both MACE (P = 0.005) and all-cause mortality (P = 0.018). CONCLUSION: CT-derived myosteatosis was associated with adverse outcomes after TAVR and showed modest additional prognostic information beyond low muscle mass and clinical variables. These findings should be externally validated before clinical implementation.

Does Anatomy Dictate Outcome?: Self-Expanding vs Balloon-Expandable Transcatheter Aortic Valve Replacement in Small and Extra-Small Annuli.

The optimal transcatheter aortic valve replacement strategy in patients with a small aortic annulus (SAA) remains unclear. We performed a systematic review and meta-analysis comparing self-expanding valves (SEVs) to balloon-expandable valves (BEVs) in SAA patients. We searched PubMed, Embase, Web of Science, and Scopus for studies comparing SEVs and BEVs in patients with SAA defined by computed tomography. A random-effects model using the Der Simonian and Laird estimator was used to pool odds ratios (ORs) and mean differences (MDs). We identified 25 studies encompassing 13,846 patients (5633 BEV; 8213 SEV). SEVs demonstrated superior hemodynamics, including a larger indexed effective orifice area (MD: 0.20 cm2/m2; P < 0.00001), a lower mean transvalvular gradient (MD: -4.11 mm Hg; P < 0.00001), and a lower risk of severe patient-prosthesis mismatch (OR: 0.37; P < 0.00001). However, SEVs were associated with a higher risk of permanent pacemaker implantation (PPI) (OR: 1.63; P = 0.0008) and moderate or severe paravalvular leak (PVL) (OR: 2.26; P < 0.00001). There was no significant difference in all-cause mortality at 1 year (OR: 0.96; P = 0.55) or stroke at 30 days (OR: 1.34; P = 0.18). Notably, in a subgroup analysis restricted to patients with extra-small annuli (area <400 mm2 or diameter <23 mm), the hemodynamic advantages of SEVs persisted while the elevated risks of PPI and PVL were no longer statistically significant. In patients with SAA, SEVs provide better hemodynamics but carry safety concerns including higher risks of PVL and PPI in the overall population. These risks were not observed in the extra-small annulus subgroup. Valve selection should be individualized based on patient anatomy and procedural risk profile.

Treatment of Premature Ventricular Contractions: A Review of Medical Therapy, Catheter Ablation, and Emerging Treatments.

Premature ventricular contractions (PVCs) are common arrhythmia encountered in patients with and without structural heart disease. Although often benign and asymptomatic, they may also cause palpitations, exercise intolerance, presyncope, and reduced quality of life, and in some patients can contribute to PVC-induced cardiomyopathy or trigger malignant ventricular arrhythmias. Their clinical significance depends on symptom burden, PVC frequency, ventricular function, and the presence of underlying myocardial disease. Diagnostic evaluation includes electrocardiography, ambulatory rhythm monitoring, echocardiography, exercise testing, and cardiac magnetic resonance imaging for tissue characterization and risk stratification. Management ranges from reassurance and lifestyle modification to pharmacologic therapy and catheter ablation. Beta-blockers and nondihydropyridine calcium channel blockers remain common first-line options, whereas antiarrhythmic drugs may be considered in carefully selected patients. Catheter ablation is an effective treatment for symptomatic PVCs, high PVC burden, and PVC-induced cardiomyopathy, with high procedural success rates and favorable effects on arrhythmic burden and ventricular function. Novel approaches, including electrocardiographic imaging-guided planning, pulsed field ablation, stereotactic radioablation, neuromodulation, and renal denervation, may further expand future therapeutic options. This review summarizes the pathophysiology, clinical implications, diagnostic evaluation, and contemporary management of PVCs, with emphasis on medical therapy, catheter ablation, and emerging treatments.

Age and Procedural Timing for Asymptomatic Severe Aortic Stenosis: Analysis From the EARLY TAVR Trial.

BACKGROUND: The EARLY TAVR trial demonstrated that early transcatheter aortic valve replacement (TAVR) was superior to clinical surveillance (CS) in asymptomatic severe aortic stenosis. The relative impact of early TAVR versus a CS strategy by age is unknown. METHODS: The study population of the EARLY TAVR trial was stratified into 4 age groups: 65 to 69 years (n=141), 70 to 74 years (n=263), 75 to 79 years (n=250), and ≥80 years (n=247). Associations between age and the trial primary end point of death, stroke, or unplanned cardiovascular hospitalization; the composite end point of death, stroke, or heart failure hospitalization; and its individual components were examined. Interaction tests evaluated whether the treatment effect of early TAVR versus CS differed by age. RESULTS: No interaction was detected between age and the treatment effect of early TAVR versus CS for the composite or individual outcomes. We observed lower stroke rates with early TAVR compared with CS in the youngest (65-69 years, absolute risk reduction, 13%; P=0.008) and oldest (≥80 years; absolute risk reduction, 12.3%; P=0.029) age groups. The absolute difference in heart failure hospitalization rates between the early TAVR and CS arms at 2 years was greatest in the oldest patients (≥80 years, 9.1%; 75-79 years, 5.9%; 70-74 years, 5.1%; 65-69 years, 4.4%). In the CS group, time to conversion to AVR was similar across all age groups (median, 11 months; P=0.73). Approximately one-third of younger patients (65-69 years) in the CS arm presented with acute valve syndrome at the time of conversion, and the frequency tended to increase with age (P=0.06). CONCLUSIONS: In the EARLY TAVR trial, the relative benefit of early TAVR over CS was consistent among all age groups. The greatest absolute reduction in stroke rate with early TAVR compared with CS appeared in the youngest and oldest groups, whereas reduction in heart failure hospitalization was most pronounced in the oldest patients. These data suggest that early TAVR should be considered in all age groups above 65 years. REGISTRATION: URL: https://www.clinicaltrials.gov; Unique identifier: NCT03042104.

The CRP-albumin-lymphocyte (CALLY) index is an independent prognostic factor for patients undergoing transcatheter aortic valve implantation.

BACKGROUND/OBJECTIVES: The C-reactive protein-albumin-lymphocyte (CALLY) index is an emerging composite biomarker that integrates inflammatory, nutritional, and immune parameters. Although its prognostic utility has been established in oncological and certain cardiovascular contexts, its role in predicting outcomes following transcatheter aortic valve implantation (TAVI) remains unclear. This study aimed to investigate the prognostic value of the CALLY index in patients with severe aortic stenosis undergoing TAVI, with a focus on its association with all-cause mortality. METHODS: A single-center, retrospective cohort study was conducted including 330 patients who underwent TAVI for severe aortic stenosis between December 2016 and January 2025. The CALLY index was calculated using preprocedural C-reactive protein, serum albumin, and lymphocyte count. Primary outcome was the incidence of all-cause mortality. RESULTS: The CALLY index was lower in deceased patients than in survivors (1.0 [0.4-2.0] vs. 3.0 [1.0-10.6], p < 0.001). In multivariable analysis, a lower CALLY index was independently associated with higher all-cause mortality (HR: 0.965, 95% CI: 0.933-0.997, p = 0.034). The optimal cut-off value of the CALLY index for predicting all-cause mortality was 2.21, with an AUC of 0.730 (95% CI: 0.674-0.787), sensitivity of 76.7%, and specificity of 61.3% (p < 0.001). CONCLUSIONS: The CALLY index was independently associated with all-cause mortality in patients with severe aortic stenosis undergoing TAVI. As a simple and readily available biomarker, it may help support early risk stratification in this population.

Invasive transvalvular flow rate to predict likely severe aortic valve stenosis with low-gradient and normal ejection fraction.

BACKGROUND: There are limited data on the diagnostic role of invasively measured transvalvular flow rate (TFR) in patients with low-gradient (mean gradient < 40 mmHg) severe aortic valve stenosis (AS) (aortic valve area (AVA) ≤ 1 cm2) before transcatheter aortic valve implantation (TAVI). OBJECTIVES: To evaluate the role of invasively measured TFR as a diagnostic tool for likely severe discordant AS in patients with preserved left ventricular ejection fraction (LVEF). METHODS: We included 134 patients from a single-center registry, who had low-gradient, severe AS, and normal LVEF, and underwent pre-TAVI invasive hemodynamic evaluation. Patients were divided into likely and unlikely severe AS according to the latest European Society of Cardiology (ESC) guidelines. RESULTS: Patients with likely and unlikely severe AS had comparable stroke volume index (SVi) (32.01 ± 9.15 vs. 34.09 ± 11.36 ml/m2, p = 0.536), while the likely severe AS group had a lower TFR (159 ± 51.03 vs. 180 ± 56.03 ml/s, p = 0.044). We found that 77.3% of patients with a SVi > 35 ml/m2 had TFR ≤ 200 ml/s. Patients with likely severe AS showed lower 5-year cardiac mortality compared with unlikely severe AS after TAVI (adj. HR 0.40; 95% CI 0.17-0.95, p = 0.038), and comparable to high-gradient severe AS (21.3% vs. 26.2%, log rank, p = 0.847). TFR ≤ 200 ml/s was highly associated with the diagnosis of likely severe AS (adj. OR 3.09; 95% CI 1.30-7.34, p = 0.010). Integrating TFR into the diagnostic criteria for severe AS could predict 5-year cardiac mortality (adj. HR 0.45; 95% CI 0.21-0.97, p = 0.042), unlike SVi. CONCLUSION: Low invasive TFR is highly associated with the diagnosis of likely severe AS. Likely severe discordant AS with normal LV systolic function showed better long-term outcome after TAVI.

Intracoronary physiological indices for coronary microvascular dysfunction: from concept to clinical application.

The coronary microcirculation has long been considered a "black box" due to the difficulty of its direct assessment. Abnormalities in this compartment, termed coronary microvascular dysfunction (CMD), are now recognized as important contributors to myocardial ischemia and are increasingly implicated across a wide range of cardiovascular diseases, underscoring the need for precise diagnosis and targeted treatment. Over the past two decades, invasive physiological assessments (IPA) performed during coronary catheterization have been developed to evaluate coronary microcirculation and provide a unique opportunity to assess patient-specific pathophysiology of CMD. IPA is now expected to play a pivotal role not only in the diagnosis of CMD, but also in risk stratification and the development of tailored therapeutic strategies. This article provides an overview of currently available intracoronary physiological indices, summarizing their clinical applications, strengths, and limitations.

Trajectories of cardiac damage staging after transcatheter aortic valve replacement and long-term outcomes.

Cardiac Damage Staging (CDS) is associated with prognosis and may evolve after transcatheter aortic valve replacement (TAVR). However, the prognostic value of CDS at 1-year and the trajectory of CDS, and its underlying factors, remains unclear. From a single-center registry, patients who underwent TAVR between 2016 and 2023 and had echocardiographic assessment at baseline, immediately post-TAVR, and 1-year, were included. We evaluated (1) temporal changes in CDS, (2) factors associated with CDS evolution, and (3) the association between 1-year CDS and long-term survival. CDS was assessed using the original schema and dichotomized as early stage (stage 0-2) versus advanced stage (stage 3-4). Among 762 patients, 676 were classified as early stage and 86 as advanced stage at baseline. In the baseline early stage group, 25 (3.7%) worsened to advanced stage immediately post-TAVR, and 48 (7.1%) had worsened by 1-year. Among baseline advanced stage group, 39 (45.3%) improved to early stage immediately post-TAVR, increasing to 50 (58.1%) at 1-year. Absence of baseline atrial fibrillation (AF) was associated with CDS improvement, whereas baseline AF and mild tricuspid regurgitation (TR) were associated with CDS worsening. Advanced stage CDS at 1-year was associated with higher all-cause mortality (adjusted HR 1.90; 95% CI 1.10-3.29; p = 0.02). Among the baseline early stage group, worsening to advanced stage was associated with a two-fold higher mortality risk. CDS evolves during the first year post-TAVR and is influenced by AF and TR. CDS at 1-year after TAVR was associated with long-term survival.

National survey to update the Italian diagnostic reference levels in interventional cardiology.

INTRODUCTION: The Italian National Institute of Health, in collaboration with national scientific societies, coordinated a multicenter survey to update Diagnostic Reference Levels (DRLs) for interventional cardiology across Italy. Regular revision of DRLs is essential to reflect technological advances and procedural optimization. Using an established methodology, anonymized patient, procedural, and equipment data were collected from 40 representative centers across 14 Italian regions. MATERIAL AND METHOD: This is a restrospective observational study. The survey focused on six major interventional cardiology procedures in adult patients: coronary angiography (CA), CA with percutaneous coronary intervention (CA + PCI), transcatheter aortic valve implantation (TAVI), pacemaker implantation and cardiac implantable device (PM/ICD), radiofrequency ablation (RFA), and electrophysiological studies (EPS). For each procedure, radiation dose metrics-including Kerma Area Product (PKA), cumulative Air Kerma, and fluoroscopy time-were collected. Patient-related factors (age range, weight, BMI, etc.), clinical and technical parameters were also recorded and procedures were classified according to type and complexity. RESULTS: A total of 6363 procedures were analyzed. National DRLs were derived as the 75th percentile of the median values from individual centers and compared with international benchmarks. A multivariable analysis of PKA was performed to identify clinical and procedural factors significantly influencing patient radiation exposure and to establish complexity-stratified DRLs. CONCLUSION: Updated DRL values were defined for all six procedures: 38 Gy·cm2 for CA, 89 Gy·cm2 for CA + PCI, 184 Gy·cm2 for TAVI, 11 Gy·cm2 for PM, 18 Gy·cm2 for RFA, and 12 Gy·cm2 for EPS. Complexity-specific DRLs were also established for CA + PCI, PM, and RFA, providing guidance for optimizing patient radiation exposure in interventional cardiology practice.

A novel speckle-tracking index for predicting mortality following transcatheter aortic valve replacement.

BACKGROUND: (TAVR) are associated with cardiac damage, especially in those with pulmonary hypertension (PH) and right ventricular (RV) dysfunction. RV dyssynchrony is a novel prognostic indicator in PH patients, but its prognostic value in TAVR patients is unclear. We aimed to assess the prognostic value of RV dyssynchrony in TAVR patients. METHODS: A total of 1,052 consecutive patients with severe aortic stenosis (AS) undergoing TAVR between April 2012 and December 2021 were studied. The primary endpoint was 3-year mortality. RVSD4 was defined as the standard deviation of the times to peak-systolic strain for the four mid-basal RV segments by two-dimensional (2D) speckle-tracking echocardiography (STE), and RV dyssynchrony was defined as RVSD4 >18 ms. RESULTS: After 3-year follow-up, 182 patients (17.3%) died. Compared with the survivors, the non-survivors were older, included less females, had more comorbidities, comprised more patients with a pacemaker and New York Heart Association (NYHA) functional class III/IV, had a higher Society of Thoracic Surgeons (STS) score, worse laboratory data, and worse cardiac function. Cox regression analysis showed NYHA functional class III/IV [hazard ratio (HR): 2.134, 95% confidence interval (CI): 1.193-3.816, P=0.011], estimated glomerular filtration rate (eGFR; HR: 0.990, 95% CI: 0.980-1.000, P=0.044), and RVSD4 (HR: 1.028, 95% CI: 1.024-1.032, P<0.001) were independent risk factors for the mortality of patients after TAVR, and the fully adjusted multivariable HR of RV dyssynchrony was 4.008 (95% CI: 2.541-6.323). Additionally, a graded association between RV dyssynchrony and mortality at 3 years (P<0.001) was robustly revealed by Kaplan-Meier analyses. CONCLUSIONS: RV dyssynchrony is an independent and robust risk factor for 3-year mortality in patients with severe AS undergoing TAVR, and RVSD4 can be utilized as a risk stratification tool to prognosticate the long-term mortality of those patients.

Cardiac computed tomography-derived left atrial volume index as a predictor of major adverse cardiovascular events after transcatheter aortic valve replacement.

BACKGROUND: Left atrial volume index (LAVI) has been recognized as a significant indicator of left heart remodeling and diastolic dysfunction. This study aimed to investigate the association between LAVI assessed by coronary computed tomography angiography (CCTA) and major adverse cardiovascular events (MACEs) in patients with severe aortic stenosis (AS) after transcatheter aortic valve replacement (TAVR). METHODS: This retrospective single-center study enrolled patients with severe AS undergoing TAVR between February 2020 and June 2024. All patients underwent CCTA examination prior to TAVR. Left atrial (LA) volume was automatically quantified from CCTA images, and the LAVI was computed by indexing to body surface area (BSA). Univariate and Firth-penalized Cox proportional hazards regression analyses were used to determine the predictors of MACE. Additionally, restricted cubic spline analysis was performed to explore the relationship between LAVI and MACE. RESULTS: A total of 206 patients (113 males, 93 females; mean age 68.11±8.01 years) were included in the final analysis. The incidence of MACE was 13.1% over a median follow-up time of 581 [interquartile range (IQR), 378-990] days. The LAVI was significantly higher in patients with MACE than in those without MACE [70.14 (54.81-84.12) vs. 51.19 (39.67-64.45) mL/m2, P<0.001]. After adjustment for clinical confounders and European System for Cardiac Operative Risk Evaluation (EuroSCORE II), LAVI ≥53.32 mL/m2 [hazard ratio (HR) =4.249, 95% confidence interval (CI): 1.585-11.394, P=0.001] and male sex (HR =2.864, 95% CI: 1.164-7.051, P=0.012) still independently predicted MACE. Restricted cubic spline results showed a nonlinear relationship between LAVI and MACE (P for nonlinearity =0.032). CONCLUSIONS: Preprocedural CCTA-derived LAVI may aid risk stratification for MACE after TAVR in severe AS. Male patients warrant closer postprocedural attention.

[Management of pseudoaneurysm associated with endovascular treatments at third level].

BACKGROUND: Pseudoaneurysms occur when the wall of a blood vessel is injured and the leaking blood accumulates in the surrounding tissue, with a prevalence of 0.5-2%. Their etiology is mainly associated with arterial puncture, needle and introducer size, use of ultrasound (US), duration or complexity of the procedure, as well as the use of anticoagulation and closure devices. Risk factors include age ≥75 years, female sex, chronic kidney disease, systemic arterial hypertension (SAH), type 2 diabetes mellitus (T2DM), cardiac arrhythmia, infected tissues, and multiple puncture attempts. OBJECTIVE: To analyze management protocols for pseudoaneurysms secondary to endovascular procedures in a tertiary care unit in western Mexico. MATERIALS AND METHODS: Analytical cross-sectional study with a longitudinal component. Electronic medical records and US reports with a diagnosis of pseudoaneurysm in patients undergoing endovascular procedures were reviewed from January 1 to December 31, 2022. A p value ≤ 0.05 was considered statistically significant. RESULTS: Forty-eight patients were evaluated: Group 1 (conservative treatment, n = 27) and Group 2 (invasive treatment, n = 21). Group 2 vs. Group 1: mean age (62.67 ± 16.93 vs. 66.48 ± 11; p = 0.018). Procedures included cardiac catheterization, peripheral angioplasty, and transcatheter aortic valve implantation (TAVI). Time (days) to referral for evaluation (158 ± 34.4 vs. 6.86 ± 1.32; p = 0.032); femoral access (62% vs. 52%; p = 0.125); sac size ≥3 cm (81% vs. 22%; p = 0.001). CONCLUSIONS: Fifty-six percent resolved with conservative management and 44% required invasive treatment. Associated factors were sac diameter ≥3 cm and ≥30 days to request angiologic evaluation.

Alpha-gal xenoantigens in bioprosthetic valve recipients: clinical implications for bioprosthesis longevity.

BACKGROUND: Structural valve degeneration (SVD) is a key limitation of bioprosthetic heart valves (BHVs). The underlying mechanisms for this degeneration and pathophysiology remains only partially defined. Emerging evidence implicates a xenogeneic carbohydrate epitope, galactose-α-1,3-galactose (Alpha-gal), as a potential driver of immune-mediated valve deterioration. This review explores the current knowledge on alpha-gal (AG) sensitization and evidence linking it to SVD and the potential clinical implications. METHODS: A literature search was conducted using Embase, PubMed and Scopus, using variants of the following keywords, such as "alpha-gal", "bioprosthetic valve", and "degeneration". Studies included reported human subject findings and focused on BHVs. Only original works were permitted, published between January 2014 and December 2025. RESULTS: Six studies met the inclusion criteria. Case reports demonstrated heterogenous clinical outcomes with, rapid SVD observed in some alpha-gal sensitized patients, while other patients showed tolerance to bioprosthetic implantation in the perioperative and short-term period. The only study with longitudinal follow-up demonstrated that anti-AG IgG responses were associated with increased SVD and calcification. Another study found no perioperative adverse valvular outcomes, although follow-up was limited to in-hospital assessment. Overall, his manuscript identifies that AG sensitization may contribute to SVD in certain patients, however, its broader significance remains uncertain. CONCLUSIONS: Immune recognition of AG may contribute to SVD based on the limited available evidence. Larger prospective investigations are required to clarify a causal relationship and to assist in guiding potential preventative strategies. Recognition of this mechanism may ultimately inform management of valve replacement and bioprosthesis selection plans.

Conventional preoperative parameters associated with new-onset atrial fibrillation after TAVR: a comparative single-center study.

OBJECTIVES: This study compared conventional preoperative parameters between transcatheter aortic valve replacement (TAVR) patients with and without post-procedural new-onset atrial fibrillation (NOAF) to identify simple risk markers. METHODS: A total of 211 patients undergoing TAVR were enrolled. Post-procedural NOAF occurred in 19 patients (9.0%). Preoperative clinical baseline data, electrocardiographic parameters, conventional echocardiographic indices, laboratory findings, and perioperative variables were compared between the NOAF and No-NOAF groups. RESULTS: Compared with the No-NOAF group, patients with post-TAVR NOAF were significantly older (P = 0.002) and had a higher heart rate (P = 0.002). Echocardiographically, the NOAF group exhibited larger cardiac dimensions, including right ventricular diameter (P < 0.001), pulmonary artery diameter (P = 0.003), right atrial transverse diameter (P < 0.001), left atrial diameter (P = 0.042), and left ventricular diameter (P = 0.018). Moreover, the NOAF group had lower left ventricular ejection fraction (P = 0.005) and fractional shortening (P = 0.006). Laboratory findings showed significantly higher levels of indirect bilirubin, serum creatinine, uric acid, monocyte percentage, and N-terminal pro-brain natriuretic peptide (NT-proBNP) (P < 0.001), as well as lower glomerular filtration rate and total cholesterol (P = 0.009) in the NOAF group. No significant differences were observed in procedure length, valve type, or intraoperative complications (P > 0.05). CONCLUSIONS: Older age, higher heart rate, enlarged cardiac chambers (including right heart and left atrium), reduced left ventricular systolic function, elevated NT-proBNP, renal dysfunction, higher uric acid, lower total cholesterol, and increased monocyte percentage are associated with post-TAVR NOAF. These easily accessible conventional markers may facilitate early identification of high-risk patients in routine clinical practice, offering a practical alternative to advanced imaging techniques.

Early outcomes of redo-TAVI with the SAPIEN 3 platform: the prospective, multicentre ReTAVI registry.

BACKGROUND: Transcatheter aortic valve implantation (TAVI) is increasingly performed in younger and lower-risk patients. Since many of these patients will outlive their transcatheter heart valve (THV), redo-TAVI procedures are expected to rise in number. Yet, real-world evidence on the procedural safety and efficacy of redo-TAVI remains limited. AIMS: We aimed to evaluate the 30-day procedural and clinical outcomes of redo-TAVI using the balloon-expandable SAPIEN 3 platform. METHODS: The ReTAVI registry is a prospective, international study enrolling consecutive patients with a failed aortic THV undergoing redo-TAVI with a balloon-expandable SAPIEN 3 THV. Data were collected across 59 international centres. All imaging was centrally analysed, and major clinical events were adjudicated by an independent committee. RESULTS: â¨A total of 143 patients (median age 84 years; 40.6% female; median Society of Thoracic Surgeons risk score 7.0%) were enrolled. The predominant failing THVs were balloon-expandable SAPIEN 3 (30.1%), self-expanding CoreValve/Evolut (53.1%), and ACURATE (14.0%) platforms. The most common failure mode was isolated regurgitation (48.6%), followed by stenosis (35.2%) and a mixed pathology (16.2%). The replacement valve was successfully implanted in 95.1% of patients, with a 30-day mortality rate of 3.5%. The 30-day stroke and pacemaker implantation rates were 0.7% and 6.3%, respectively. Redo-TAVI significantly improved valve haemodynamics, with mean gradients decreasing overall (Δ=-12.0 mmHg), and a more pronounced reduction in stenotic failures (Δ=-29.0 mmHg). Coronary obstruction was observed in 1.4% of cases. CONCLUSIONS: Redo-TAVI with a balloon-expandable SAPIEN 3 THV platform is a safe and effective reintervention strategy across diverse failed THV types, when guided by the Heart Team, standardised procedural planning, and comprehensive imaging. CLINICALTRIALS: gov: NCT05601453.

TAVI and coronary interventions: indications, technical considerations, and clinical scenarios.

Transcatheter aortic valve implantation (TAVI) has become the preferred treatment for severe aortic stenosis. Nonetheless, interplay between aortic valve disease, transcatheter valve implantation, and the coronary arteries is frequent and clinically relevant. Coronary intervention in the context of TAVI encompasses distinct but interrelated scenarios, including the management of concomitant coronary artery disease and the prevention or treatment of coronary artery obstruction. These aspects introduce additional complexity to procedural planning and long-term management. This review provides a comprehensive and practical overview of coronary interventions related to TAVI, encompassing coronary evaluation and physiological assessment, the indications and timing of percutaneous coronary intervention before and after valve implantation, and strategies for managing coronary obstruction. Particular emphasis is placed on anatomical and device-related factors influencing coronary access, including transcatheter heart valve design, aortic root anatomy, and commissural alignment. By structuring coronary interventions according to distinct clinical scenarios, this article aims to support tailored decision-making and optimise procedural safety, feasibility, and long-term coronary management in patients undergoing TAVI.

Efficacy and Safety of Navitor Versus Sapien Valves in Transcatheter Aortic Valve Implantation: A Systematic Review and Meta-Analysis.

Transcatheter aortic valve implantation (TAVI) has become an established treatment option for symptomatic severe aortic stenosis, particularly in older patients. In this meta-analysis, we compare the latest generations of self-expandable valves, Navitor (Abbott Structural Heart, Santa Clara, CA, USA), with balloon-expandable valves, Sapien (Edwards Lifesciences, Irvine, CA, USA), in TAVI. We systematically searched PubMed, Scopus, Web of Science, and Cochrane Library databases. Studies were considered eligible if they compared Navitor with Sapien valves in TAVI. Our search strategy yielded four studies with a total of 4,828 patients. In terms of safety and efficacy, no statistically significant differences were noted between the two groups in device and technical success, 30-day all-cause mortality, stroke incidence, or major vascular complications. Permanent pacemaker implantation (PPI) (risk ratio (RR) 2.16; 95% CI 1.67 to 2.80; P < 0.001) and moderate-to-severe paravalvular leakage (PVL) (RR 3.36; 95% CI 1.93 to 5.82; P < 0.001) rates were significantly higher in Navitor valve patients. In contrast, Navitor was associated with lower rates of moderate-to-severe patient-prosthesis mismatch (PPM) (RR 0.55; 95% CI 0.31 to 0.98; P = 0.043) and better hemodynamic outcomes compared to Sapien. In summary, both Navitor and Sapien valves were effective and safe in TAVI. However, the Navitor valve was associated with higher rates of moderate-to-severe PVL and PPI. On the other hand, Navitor had a better hemodynamic profile and lower moderate-to-severe PPM than Sapien.

Prognostic Value of Plasma N-terminal Pro-B-Type Natriuretic Peptide (Nt-proBNP) Levels in Patients Presenting With Cardiac Arrhythmias to the Emergency Department: A Prospective Observational Study From India.

INTRODUCTION AND RATIONALE: N-terminal pro-B-type natriuretic peptide (NT-proBNP), a key marker of cardiac stress, is widely used in heart failure care. However, its role in patients presenting to the Emergency Department (ED) with cardiac arrhythmias remains underexplored. AIMS AND OBJECTIVES: To evaluate the prognostic significance of plasma NT-proBNP levels in patients presenting to the ED with cardiac arrhythmias and to assess their clinical profile. METHODOLOGY: A prospective observational study was conducted over 18 months, from September 2023 to December 2024, with data analysis performed from January 2025 to May 2025, in the Department of Trauma and Emergency, All India Institute of Medical Sciences (AIIMS) Jodhpur, India. Patients aged ≥18 years with various arrhythmias were enrolled, excluding those with pre-existing heart failure, renal dysfunction, or structural heart disease. NT-proBNP levels, echocardiographic findings, clinical symptoms, and laboratory parameters were recorded and correlated with immediate outcomes (rhythm reversion versus recurrence). Arrhythmia recurrence was defined as the recurrence of the same or another clinically significant arrhythmia during hospitalization or within a seven-day follow-up period. RESULTS: In 194 patients with cardiac arrhythmias, 35.6% achieved rhythm reversion, while 64.4% experienced recurrence. NT-proBNP levels were significantly higher in the recurrence group (8545.53 vs. 2555.06 pg/mL, p=0.001), consistent across all left ventricular ejection fraction (LVEF) categories. Elevated NT-proBNP, sepsis, high-sensitivity C-reactive protein (hs-CRP), and low hemoglobin predicted poorer outcomes in univariable analyses, with septic shock showing the strongest adverse prognostic impact (p=0.015). CONCLUSION: Elevated NT-proBNP levels were associated with an increased risk of arrhythmia recurrence and adverse short-term outcomes in patients presenting with cardiac arrhythmias. These associations were observed across different LVEF categories, suggesting that NT-proBNP may reflect underlying cardiac stress and overall illness severity. Sepsis and inflammatory states were also associated with poorer outcomes, highlighting the multifactorial nature of risk in this population. NT-proBNP may have utility as a risk stratification marker in the ED; however, larger prospective studies with multivariable adjustment are required to validate these findings and determine its independent prognostic value.

Predictors for Improvement of Mitral Regurgitation in Patients With Pure Severe Aortic Regurgitation Undergoing Transcatheter Aortic Valve Replacement: Can We Kill Two Birds With One Stone?

BACKGROUND: Transcatheter aortic valve replacement (TAVR) is now recognized as an important treatment for pure severe aortic regurgitation (PSAR). Some patients with PSAR also suffer from functional mitral regurgitation (FMR). However, whether TAVR can improve FMR in patients with PSAR and the predictors of this improvement remain unknown. Thus, this study aimed to explore predictors of FMR improvement in patients with PSAR undergoing TAVR. METHODS: Patients with PSAR and ≥mild FMR who underwent TAVR at the Zhongshan Hospital Affiliated with Fudan University were enrolled from June 2020 to June 2024. Participants were divided into groups with or without FMR improvement depending on whether FMR improved 1 month post-TAVR. Baseline data, imaging results, and follow-up data of the patients were collected. RESULT: This study included 111 patients, among whom 59 had improved FMR, and 52 did not. Compared to patients without FMR improvement, significantly fewer patients in the FMR-improved group were diagnosed with renal insufficiency (0% vs. 10%; p = 0.015) and left bundle branch block (0% vs. 8%; p = 0.030). Moreover, more were diagnosed with hypertension (80% vs. 56%; p = 0.007), and right bundle branch block (10% vs. 0%; p = 0.018). On transthoracic ultrasound, patients with FMR improvement were more likely to have a lower left ventricular ejection fraction (LVEF) and larger left ventricular end-diastolic (LVED) dimensions. In both groups, the degree of aortic regurgitation was significantly improved during 1-day and 1-month follow-ups post-TAVR (p < 0.001). No significant differences in the incidence of postoperative adverse events were found between the two groups during the short-term follow-up. Patients with higher degrees of FMR, lower LVEF, and hypertension were more likely to experience improvement in FMR post-TAVR. CONCLUSION: FMR improvement is observed in approximately half of PSAR patients undergoing TAVR. Higher FMR, lower LVEF, and hypertension before a TAVR are independent predictors of improvement in FMR.

Preoperative Main Pulmonary Artery Diameter Indexed to Body Surface Area Independently Predicts Mortality After Transcatheter Aortic Valve Implantation in a Chinese Population.

BACKGROUND: Pulmonary hypertension (PH) commonly accompanies severe aortic stenosis and adversely affects outcomes after transcatheter aortic valve implantation (TAVI). However, the prognostic value of computed tomography-derived pulmonary artery remodeling, particularly the main pulmonary artery diameter (mPAD) indexed to body surface area (mPAD/BSA), remains uncertain. Therefore, this study aimed to investigate the prognostic significance of mPAD/BSA in patients with severe aortic stenosis and concomitant PH undergoing TAVI. METHODS: We retrospectively analyzed 122 consecutive patients undergoing TAVI, while the subgroup of 103 patients referred to those with pulmonary hypertension. Pulmonary artery systolic pressure (PASP) was estimated by transthoracic echocardiography, while mPAD was quantified on multidetector computed tomography (MDCT) and indexed to BSA. Patients were stratified according to postoperative changes in PASP. Echocardiographic and imaging parameters were compared across PH severity categories. RESULTS: Postoperative PASP improvement was observed in 71 patients (68.9%). Patients with PASP improvement had smaller baseline mPAD and mPAD/BSA but higher baseline PASP than those who showed no improvement (all p < 0.05). Although PASP improved in patients with pre-existing PH, the extent and trajectory of recovery varied according to baseline PH severity. In contrast, left ventricular hemodynamics improved uniformly across all groups, whereas right heart remodeling and pulmonary artery structural changes remained limited. In the multivariable logistic regression analysis, baseline atrial fibrillation (AF) (p = 0.009), preoperative first-degree atrioventricular block (AVB) (p = 0.032), and preoperative ≥ moderate tricuspid regurgitation (TR) (p = 0.037) were independently associated with a lower risk of postoperative PASP non-improvement. In contrast, preoperative ≥ moderate aortic regurgitation was associated with a higher risk of PASP non-improvement (p = 0.022). Notably, preoperative MDCT-derived mPAD/BSA independently predicted 1-year all-cause mortality (HR 1.29, 95% CI 1.01-1.64; p = 0.041), providing incremental prognostic information alongside echocardiographic PASP. CONCLUSIONS: PH secondary to aortic stenosis is only partially reversible after TAVI, with greater improvement in mild-to-moderate disease. Preoperative mPAD/BSA is a novel MDCT-based structural biomarker that independently predicts 1-year all-cause mortality beyond PASP alone. Integrating pulmonary vascular imaging with echocardiography may improve risk stratification and inform procedural timing in patients undergoing TAVI.

Reproducible Bradycardia After Flumazenil Reversal of Midazolam-Propofol Intravenous Sedation in a Patient With Klinefelter Syndrome: A Case Report.

Klinefelter syndrome (KS) is the most common sex chromosome aneuploidy in males and is associated with metabolic, cardiovascular, and neurodevelopmental features. Some individuals with KS have also been reported to exhibit altered heart rate (HR) regulation, although cardiovascular responses associated with intravenous sedation (IV-S) have not been well documented. We report a 14-year-old boy with KS, intellectual disability, and autism spectrum disorder who underwent multiple dental treatments under IV-S with midazolam and propofol. During three consecutive sessions at approximately two-week intervals, flumazenil administration at the end of each session was followed by reproducible declines in HR of 13-21 beats per minute, while blood pressure and oxygen saturation showed no marked deterioration. The post-flumazenil HR was lower than both the pre-sedation baseline HR and the lowest HR recorded during dental treatment in each session. The patient had no history of structural heart disease, and post-procedure chest radiography and transthoracic echocardiogram showed no significant abnormalities. These observations raise the possibility that the abrupt pharmacologic transition associated with flumazenil reversal, together with KS-related vulnerability in HR regulation, contributed to the reproducible post-reversal bradycardia. Careful monitoring during reversal and emergence may be warranted when flumazenil is used in patients with KS.

Discharge After Transcatheter Aortic Valve Implantation: Observational Study of Self-Reported Experiences and Health Status in the Very Early Recovery Period.

BACKGROUND: Early discharge home is the standard of care after transcatheter aortic valve implantation (TAVI). Transition home can be challenging for this population. We lack evidence of patients' experiences during their immediate recovery to develop targeted and effective interventions. We aimed to describe patients' self-reported readiness; supports for early discharge; and very early experience of physical health status, activities of daily living, and procedure-related events after TAVI. METHODS: We conducted a prospective observational study at five Canadian hospitals; registered nurses and nurse practitioners conducted telephone assessments three and 10 days after TAVI to document patients' self-reports. RESULTS: We recruited 188 patients (81.6 years, SD ​= ​7.0, 41.5% female) treated with local anesthesia or conscious sedation (n ​= ​171, 91.0%) and balloon-expandable device (77.7%). All patients reported feeling "totally ready" (88.1%) or "somewhat ready" (11.9%) for discharge, and 95.5% returned home with social support. On day 3, most participants completed all activities of daily living (n ​= ​165, 93.2%) and at least six instrumental activities of daily living (n ​= ​105, 59.3%). Their self-reported level of energy was moderate (n ​= ​89, 51.7%), high, or very high (n ​= ​34, 19.8%) and increased by 88.4% by day 10 (n ​= ​49). On day 3, most patients (n ​= ​139, 80.3%) restricted their mobilization to their home, with a 77% increase in daily walking by day 10. CONCLUSIONS: Most patients report high level of self-efficacy, self-care behavior, and improved physical status in the first week after TAVI. Research is needed to identify, monitor, and intervene in patients who do not follow this trajectory.

Prospective Evaluation of a Simplified Discharge and Temporary Pacing Algorithm After Transcatheter Aortic Valve Replacement.

BACKGROUND: The increasing patient volume undergoing transcatheter aortic valve replacement (TAVR) necessitates procedural simplification and short admissions without compromising safety. The objective of this study was to prospectively evaluate a novel electrocardiogram (ECG)-based algorithm for discharge and the use of temporary pacemakers (TPMs) in pacemaker-naïve TAVR patients. METHODS: Patients were stratified into next-day discharge, second-day discharge, or third-day discharge groups based on preprocedural right bundle branch block and immediate postprocedural ECG changes. Prophylactic TPMs were restricted to patients with pre-existing right bundle branch block or a PQ interval >250 ​ms. RESULTS: Among 664 patients, the mean age was 80.8 ​± ​5.7 years, 46.0% were females, and 69.8% were discharged as planned or earlier. Self-expandable valves and balloon-expandable valves were used in 28.0 and 72.0%, respectively. The shorter the planned observation, the larger the fraction of discharge delays caused by nonconduction issues (next-day discharge 68.9%, second-day discharge 43.6%, and third-day discharge 10.2%, respectively, p ​< ​0.001). A permanent pacemaker (PPM) was implanted in 11.5%. Although consensus criteria suggested TPMs in 39.2% of cases, the algorithm reduced this to 4.5% without compromising safety. The 30-day readmission rate for PPMs was 2.0%, and no out-of-hospital deaths were related to rhythm disturbances. CONCLUSIONS: A discharge algorithm based on preprocedure and immediate postprocedure ECG in PPM-naïve patients undergoing TAVR, including a high threshold for TPM insertion, enables postimplant discharge planning in most cases and significantly reduces the use of TPMs without compromising safety during hospitalization or after discharge.

Cardiac Arrest as the First Manifestation of Single Coronary Artery-Potential Role of FFR

Single coronary artery may present with life-threatening ventricular arrhythmias even in the absence of structural heart disease or inducible ischemia. FFR-CT can detect clinically relevant flow reduction despite normal functional testing, highlighting its potential role in risk stratification in patients with coronary anomalies.

Right Ventricular Function and a Novel Biomarker After TAVI: Clinical Implications of IGFBP-7.

BACKGROUND: Aortic stenosis (AS) is the most common valvular heart disease in elderly patients, and transcatheter aortic valve implantation (TAVI) has become the preferred treatment option in this population. Right ventricular dysfunction (RVD) is a marker of advanced disease and poor prognosis; however, its clinical impact and reversibility after TAVI remain unclear. Insulinlike growth factor binding protein-7 (IGFBP-7), a biomarker associated with endothelial function and myocardial stress, has been linked to heart failure and adverse cardiovascular outcomes. This prospective study aimed to evaluate changes in right ventricular function after TAVI and to investigate the relationship between IGFBP-7 levels and clinical, echocardiographic, and laboratory parameters during follow up. Our findings may provide insight into right ventricular recovery after TAVI and the potential prognostic role of IGFBP-7 in this setting. METHODS: Demographic data (age, gender, height, weight), basic echocardiographic parameters and routine blood laboratory tests of patients who applied to our clinic and underwent TAVI due to severe AS were recorded before TAVI and at 48 h and 6 months after the procedure. A prospective study was designed. RESULTS: The study included 116 individuals, 76 (65.5%) of whom were patients and 40 (34.5%) were controls. Both groups had similar age and gender characteristics. It was shown that there was improvement in the parameters indicating right ventricular function (PAP, RVSM and TAPSE) measured in the preoperative period at the postoperative 48th hour and at the postoperative sixth month follow-up after TAVI. IGFBP-7 level was higher in the preoperative patient group compared to the postoperative sixth month follow-up. It was found that IGFBP-7 levels showed positive correlations with proBNP, CRP, left atrial volume index (LAVI) and negative correlations with EF Simpson and EGFR at the postoperative sixth month follow-up. CONCLUSIONS: Our study shows that TAVI not only relieves anatomic obstruction but also may contribute to improving right ventricular functions, valve insufficiency degrees, and systemic biomarker levels. IGFBP-7 was found to be significantly associated with both cardiac (proBNP, EF, LAVI) and renal (eGFR) functions, suggesting that this marker may be a biomarker reflecting multisystem organ effects. Further studies with larger patient groups and long term follow up will contribute to the validation of these findings and their integration into clinical practice.

Artificial intelligence-enabled electrocardiography to triage echocardiography for structural heart disease diagnosis in a low-resource setting.

BACKGROUND: Timely diagnosis of structural heart disease (SHD) is often constrained by limited access to echocardiography in low-resource settings. Although electrocardiography (ECG) is widely available, traditional interpretation poorly reflects underlying SHD risk, leading to inefficient referral for echocardiography. METHODS: We used data from PROVAR+, a large community-based cardiovascular screening program in operation since 2014 in Brazil. In this program, adults underwent 12-lead ECGs paired with either screening point-of-care ultrasound (POCUS) (screening cohort) or comprehensive transthoracic echocardiography (TTE) (imaging cohort). We evaluated the performance of a validated artificial intelligence model in identifying probable SHD from ECG images compared with Minnesota Code-defined major ECG abnormalities, with POCUS as a screening reference. We then assessed the health-system impact of AI-ECG-guided echocardiography referral using paired ECG-TTE data by simulating standard versus AI-prioritized referral strategies under an established health-system echocardiography capacity. RESULTS: Among 3282 individuals in the screening cohort, AI-ECG demonstrated substantially higher discrimination for probable SHD than Minnesota Code-based major ECG abnormalities (area under the curve 0.73 vs 0.52), with higher positive predictive value and significant net reclassification improvement (35%), driven primarily by improved identification of individuals without disease. Decision-curve analysis showed consistently greater net benefit for AI-ECG across clinically relevant referral thresholds. In the imaging cohort (n = 1475), AI-ECG-guided prioritization accelerated SHD diagnosis under a previously known system capacity of 200 echocardiograms per month. The time to identify 50% of SHD cases was shorter with AI-guided care, with 19 days using AI-ECG-based triage vs 81 days under standard referral, which was consistent across demographic and clinical subgroups. CONCLUSION: AI-enabled ECG interpretation improved the identification of SHD beyond conventional ECG assessment. Applying AI-ECG to echocardiography referral workflows can substantially accelerate diagnosis under limited imaging capacity, supporting more efficient and equitable use of cardiovascular diagnostic resources.

Prognostic Value of Preoperative Left Ventricular End-Diastolic Dimension in Patients With Severe Aortic Stenosis Undergoing Transcatheter Aortic Valve Implantation With the Venus-A Valve.

OBJECTIVE: Severe aortic stenosis (AS) leads to chronic pressure overload of the left ventricle (LV). We explored the prognostic value of preoperative left ventricular end-diastolic dimension (LVEDD) dilation in patients with severe AS. METHODS: This is a retrospective study of 108 patients with severe AS who underwent transcatheter aortic valve implantation with the Venus-A valve. These participants were assigned to the large LVEDD and non-large LVEDD groups. The receiver operating characteristic and Kaplan-Meier curves were generated to assess the predictive value of preoperative LVEDD dilation for poor patient prognosis (readmission or death within 1 year postoperatively), as well as its effects on the readmission risk owing to heart failure, and complications and survival rates within 1 year postoperatively. RESULTS: Significant differences were observed between the two groups in B-type natriuretic peptide, creatinine, aortic valve area, transfemoral access, aortic valve peak velocity, mean transvalvular pressure gradient, LVEDD, left ventricular end-systolic dimension, left atrial dimension, interventricular septal thickness, relative wall thickness, left ventricular mass index, left ventricular ejection fraction, E/A ratio, E/e' ratio, and stroke volume index. Preoperative LVEDD dilation showed a predictive value for poor patient prognosis (AUC = 0.843; 95%CI: 0.761-0.906, 50.9 mm cut-off value, 99.9% sensitivity, 62.07% specificity). Preoperative LVEDD dilation was an independent influencing factor for poor prognosis within 1 year postoperatively, associated with increased readmission risk and reduced patient survival rate. CONCLUSION: Preoperative LVEDD dilation is an independent influencing factor for poor postoperative prognosis in patients. It helps predict poor prognosis within 1 year postoperatively.

[Ventricular tachycardia and left bundle branch block after transcatheter aortic valve implantation: is the valve guilty forever or not?].

New-onset left bundle branch block (LBBB) following transcatheter aortic valve implantation (TAVI) is a common conduction disorder, sometimes transient. Conversely, the development of sustained ventricular tachycardia (VT) after TAVI is rare and its management is challenging. We report the case of a female patient with aortic stenosis treated with transcatheter self-expandable aortic valve implantation, who developed new-onset LBBB post-procedure. Several days later, the patient experienced hemodynamically tolerated slow VT with a right bundle branch morphology. She underwent an electrophysiological study, but slow VT was only transiently interrupted. Due to the persistence of slow VT, the patient was discharged with an external loop recorder, which revealed spontaneous resolution of VT and regression of LBBB after a few days.

Outcomes of Self-Expanding Versus Balloon-Expandable Transcatheter Aortic Valves in Patients With Reduced Left Ventricular Ejection Fraction: A Meta-Analysis of Observational Studies.

Patients with reduced left ventricular ejection fraction (LVEF) undergoing transcatheter aortic valve replacement remain a clinically vulnerable group. Although self-expanding valves (SEVs) and balloon-expandable valves are widely used, the optimal choice in patients with LVEF <40% remains uncertain. We aimed to synthesize the available evidence comparing these two valve types in this high-risk population. We conducted a systematic review and meta-analysis of observational studies comparing SEVs and balloon-expandable valves in patients with LVEF <40% undergoing transcatheter aortic valve replacement. Outcomes included changes in LVEF, aortic gradients, mortality, and safety endpoints. Pooled estimates were calculated using random-effects models, and multivariable meta-regression was performed to adjust for study-level confounding. Five studies comprising 5365 patients were included. SEVs were associated with a greater improvement in 1-month LVEF (mean difference, 2.33; 95% confidence interval [CI], 0.83 to 3.83; p = 0.01) and lower mean aortic gradients (mean difference, -2.72; 95% CI, -3.51 to -1.93; p < 0.01). Procedural mortality (risk ratio [RR], 0.89; 95% CI, 0.26-3.11; p = 0.86), 30-day mortality (RR, 1.52; 95% CI, 0.65-3.56; p = 0.33), and 1-year mortality (RR, 1.13; 95% CI, 0.69-1.84; p = 0.44) were similar. SEVs carried an increased risk of moderate or worse paravalvular leak (RR, 2.52; 95% CI, 1.46-4.36; p < 0.01). While SEVs may offer superior early LVEF improvement, they are associated with a higher rate of paravalvular leaks. Current data are observational and insufficient to recommend one valve type over another.

A Case Series of Late Myocardial Infarction Following Self-Expanding Transcatheter Aortic Valve Replacement.

Embolic stroke is a recognized complication of transcatheter aortic valve replacement (TAVR); however, coronary embolism is rarely reported, particularly when occurring late after valve implantation. We described three patients presenting with ST-segment elevation myocardial infarction (STEMI) between 10 and 50 months after self-expanding TAVR. All patients had angiographically normal coronary arteries prior to TAVR, severe native aortic valve calcification, and well-controlled cardiovascular risk factors, and were maintained on guideline-directed single antiplatelet therapy. At presentation, coronary angiography demonstrated abrupt 100% coronary occlusion without angiographic evidence of underlying atherosclerotic disease. Aspiration thrombectomy was required in all three cases. These cases illustrate a rare presentation of late myocardial infarction following self-expanding TAVR with angiographic features possibly suggestive of a non-atherosclerotic mechanism. Although a definitive embolic source cannot be established, delayed embolization of calcific or thrombotic material may represent a plausible explanation. These observations are hypothesis-generating and underscore the need for clinical vigilance and further mechanistic and imaging-based studies to better characterize potential late thromboembolic pathways after TAVR.

Deep Learning-Derived Body Composition Analysis Predicts Long-Term Mortality After Transcatheter Aortic Valve Replacement.

OBJECTIVE: To examine the association between body composition metrics derived from preprocedural computed tomography (CT) angiography and all-cause mortality after transcatheter aortic valve replacement (TAVR). PATIENTS AND METHODS: We included patients who underwent TAVR between September 1, 2011 and November 30, 2023 at a single academic center. Skeletal muscle (SM), subcutaneous adipose tissue (SAT), visceral adipose tissue (VAT), and intermuscular adipose tissue areas (cm2), as well as SM index (SMI; cm2/m2), were quantified from CT angiography using a validated U-Net-based deep learning model. Associations between each parameter and 3-year all-cause mortality were assessed using multivariable Cox proportional hazards models adjusted for clinical covariates, with adjusted hazard ratios (aHRs) expressed per 1-SD increase. RESULTS: Among 2642 patients (median age, 80.0 years [interquartile range, 74.0-85.0 years]; 1572 were men [59.5%]), median follow-up was 2.8 years, and 74.8% survived to 3 years. Lower SM, SAT, VAT, and SMI (analyzed as continuous variables) were independently associated with higher 3-year all-cause mortality (SM: aHR, 0.831; 95% CI, 0.762-0.906; SAT: aHR, 0.847; 95% CI, 0.775-0.926; VAT: aHR, 0.826; 95% CI, 0.762-0.896; SMI: aHR, 0.832; 95% CI, 0.763-0.907; all P≤.001). Restricted cubic spline analysis showed increased mortality risk below threshold values of the following-SM<128 cm2, SAT<161 cm2, VAT<104 cm2, and SMI<41 cm2/m2; sex-specific thresholds were also derived. CONCLUSION: Reduced SM and adipose tissue reserves are independently associated with increased mortality after TAVR. Automated CT-derived body composition assessment may improve preoperative risk stratification and guide clinical decision making in TAVR candidates.

Predictors of Noncoaxial Anteroposterior Deployment of Transcatheter Aortic Valve Replacement.

•Novel measurement: This study introduces a novel technique for measuring anteroposterior (AP) axial angle to quantify the coaxiality of valve deployment in balloon-expandable transcatheter aortic valve replacement.•Identification of key predictors: Multivariable analysis identified predeployment noncoaxial transcatheter aortic valve replacement valve position and right anterior oblique coplanar angles as independent predictors of noncoaxial valve placement.•AP noncoaxial deployment: Although previous research has largely examined lateral noncoaxiality, this study focuses on the predictors and implications of AP noncoaxial deployment.•Predictive heatmap visualization: The research utilized a generalized linear model to develop an unadjusted heatmap, visualizing the probability of noncoaxial implant based on computed tomography-determined fluoroscopic coplanar angles.

Ct-derived basal septal thickness predicts Post-TAVR pacemaker implantation in patients with preexisting right bundle branch block.

BACKGROUND: Conduction disturbances requiring permanent pacemaker implantation (PPI) remain common after transcatheter aortic valve replacement (TAVR). This study evaluated whether pre-procedural CT-derived basal muscular interventricular septal (IVS) thickness predicts PPI within 1 month post-TAVR in patients with preexisting right bundle branch block (RBBB). METHODS: In 66 TAVR patients with severe aortic stenosis and preexisting RBBB, IVS thickness was measured at 2, 4, 6 and 8 mm below the membranous septum (MS) on CT coronal views. Univariate /multivariate logistic regression were used to identify predictors, and receiver operating characteristic (ROC) analysis evaluated predictive performance. RESULTS: PPI was required in 28 patients (42.4%). The PPI group exhibited significantly thinner IVS across all measured levels (all P < 0.05). Univariate analysis revealed that every 1-mm increase in IVS thickness at 2 mm below MS, the risk of PPI was markedly reduced (OR 0.003, 95% CI: 0.001-0.059). Multivariate analysis adjusting for age, implantation depth, and membranous septum length (MSL) confirmed that IVS thickness < 4.35 mm at 2 mm below MS (adjusted OR 0.05, 95% CI: 0.01-0.32, P = 0.002) and lower MSL-implantation depth difference (MSL-ID) were independent predictors of PPI. The model incorporating IVS thickness showed excellent discrimination (AUC 0.91, 95% CI: 0.84-0.98), superior to the model without it (AUC 0.82, 95% CI: 0.71-0.92). CONCLUSIONS: Pre-procedural CT-derived basal IVS thickness independently predicts post-TAVR PPI in patients with preexisting RBBB. Thinner IVS may reflect less anatomical protection for the conduction system during valve deployment. Integrating IVS thickness into risk assessment could improve patient stratification and procedural planning.

Association between frailty and long-term outcomes in patients undergoing TAVI admitted to private intensive care units in Australia.

OBJECTIVE: Frailty is common in patients undergoing transcatheter aortic valve implantation (TAVI) and may influence post-procedural outcomes. We examined the association between frailty and long-term outcomes among patients admitted to intensive care units (ICUs) following TAVI. DESIGN SETTING AND PARTICIPANTS: Retrospective multicentre registry-based cohort study using the Australian and New Zealand Intensive Care Society Adult Patient Database. Adult patients (≥16 years) admitted to private ICUs in Australia following TAVI between 1 January 2018 and 30 June 2024 were included. MAIN OUTCOME MEASURES: Frailty was assessed using the clinical frailty scale (CFS) and categorised as nonfrail (CFS 1-3), mildly frail (CFS 4-5), or moderately-to-severely frail (CFS 6-8). The primary outcome was survival up to 4 years. Secondary outcomes included in-hospital mortality, hospital length of stay, and discharge destination. Associations between frailty and survival were evaluated using Cox proportional hazards models with robust sandwich estimators. RESULTS: Among 3917 patients, 1598 (40.8%) were nonfrail, 1920 (49.0%) were mildly frail, and 399 (10.3%) were moderately-to-severely frail. Four-year survival was highest among nonfrail patients (73.4%; 95% confidence interval [CI], 70.1-76.8), followed by mildly frail (62.7%; 95% CI, 59.3-66.4; adjusted hazard ratio [aHR], 1.52; 95% CI, 1.33-1.73) and moderately-to-severely frail patients (44.2%; 95% CI, 37.9-51.6; aHR, 2.23; 95% CI, 1.99-2.49). Patients with moderate-to-severe frailty had higher in-hospital mortality, longer hospital stays, and less frequently discharged home. CONCLUSIONS: Frailty was common among patients admitted to ICU following TAVI and was independently associated with reduced long-term survival and adverse hospital outcomes. Routine frailty assessment may help inform peri-procedural risk stratification and clinical decision-making in patients undergoing TAVI.

Impact of Cause-Specific readmission on Long-Term mortality after transcatheter aortic valve implantation.

BACKGROUND: Hospital readmissions after transcatheter aortic valve implantation (TAVI) are common, yet the long-term impact of both readmission for heart failure and non-cardiac readmissions, including infection, fracture, and stroke, on mortality remains insufficiently understood. METHODS AND RESULTS: This retrospective cohort study included 1,008 patients (mean age 85 ± 5 years; 325 [32%] male) who underwent TAVI between January 2014 and December 2024. Cardiac readmission was defined as readmission for heart failure, whereas non-cardiac readmissions were defined as those due to infection, fracture, and stroke. Cause-specific cumulative incidence functions were estimated using the Fine-Gray model, with death treated as a competing risk, and the associations between each type of readmission and all-cause mortality were evaluated using time-dependent Cox proportional hazards models. During the observation period, 253 patients (26%) died. The 10-year cumulative incidence rates were 38% for heart failure, 10% for infection, 23% for fracture, and 9% for stroke. Although infection-, fracture-, and stroke-related readmissions occurred less frequently than mortality as a competing risk, all were significantly associated with increased all-cause mortality: heart failure (HR 5.54, 95% CI 3.99-7.69), infection (HR 5.00, 95% CI 2.81-8.89), stroke (HR 5.69, 95% CI 3.39-9.54), and fracture (HR 4.47, 95% CI 2.90-6.09) (all p < 0.01). Most readmissions occurred within the first year, while fracture-related readmissions showed a secondary rise around the second year, and all event types increased again after the third year. CONCLUSIONS: Hospital readmissions following TAVI, including both cardiac and non-cardiac causes, were significantly associated with increased all-cause mortality.

Axillary conduit creation and passive femoral to carotid cerebral perfusion shunt creation for challenging transcatheter aortic valve placement.

Alternate access solutions are needed in patients where standard transfemoral delivery of transcatheter aortic valve replacement (TAVR) devices is deemed prohibitive. We present a case of a 78-year-old male patient with a past medical history significant for severe aortic arch disease, peripheral artery disease, and symptomatic aortic stenosis requiring an alternative access solution for TAVR. The combination of an axillary conduit with a transcarotid arterial revascularization arterial and venous sheath was utilized to create an access point for the TAVR device and an avenue for cerebral embolic protection with passive cerebral perfusion.

Characteristics, clinical outcomes and molecular mechanisms associated with severe diastolic dysfunction in aortic stenosis.

OBJECTIVES: We aimed to better understand patient characteristics and pathophysiological mechanisms associated with severe diastolic dysfunction in aortic stenosis patients undergoing transcatheter aortic valve implantation (TAVI). BACKGROUND: Patients with severe aortic stenosis often have echocardiographic signs of diastolic dysfunction. However, their characteristics and underlying disease mechanisms remain unclear. METHODS: Untargeted LC-MS lipidomics (1110 lipids) and proteomics (834 proteins) were performed on peri-procedural plasma from 231 TAVI patients. Pre-procedural echocardiography was available in 191 patients. DIABLO (mixOmics, version 6.3.0, R version 4.4.1) was used to integrate lipidomic and proteomic profiles. RESULTS: Median age was 80 years, and 61% were female. In total, 75 (39%) patients had severe diastolic dysfunction. Patients with severe diastolic dysfunction more often had atrial fibrillation, higher plasma NT-proBNP concentrations, and more heart failure hospitalizations and mortality.Multi-omic network analysis identified two major lipid-protein clusters associated with severe diastolic dysfunction. The first showed dysregulation of membrane phospholipids such as cardiolipins (essential for mitochondrial integrity and energy metabolism), and phosphatidylserines (cytoprotective and anti-inflammatory properties). This cluster was associated with cytoskeletal and extracellular matrix remodeling. The second cluster showed high concentrations of acylcarnitines (indicative of metabolic dysfunction), which were associated with extracellular matrix remodeling and inflammatory responses. CONCLUSIONS: In patients with aortic stenosis undergoing TAVI, those with severe diastolic dysfunction showed a disrupted balance of membrane phospholipids and acylcarnitines, suggesting that impaired energy metabolism, cellular and extracellular structural remodeling, and inflammatory responses may underlie the development and progression of diastolic dysfunction and heart failure. CONDENSED ABSTRACT: We investigated clinical features and molecular profiles linked to severe diastolic dysfunction in aortic stenosis patients undergoing TAVI. Untargeted lipidomics (1110 lipids) and proteomics (834 proteins) were performed on peri-procedural plasma from 231 patients. Pre-procedural echocardiography was available in 191 patients. Severe diastolic dysfunction was present in 39% and was associated with atrial fibrillation, higher NT-proBNP, and more heart failure hospitalizations and mortality. Multi-omic integration identified two major lipid-protein clusters. The first was characterized by dysregulated membrane phospholipids, including cardiolipins and phosphatidylserines, linked to cytoskeletal and extracellular matrix remodeling. The other showed elevated acylcarnitines, indicating metabolic dysfunction, and inflammatory activation. These findings suggest that altered energy metabolism, structural remodeling, and inflammation are associated with severe diastolic dysfunction in aortic stenosis.

Prior venous thromboembolism and in-hospital mortality after transcatheter valve interventions: a national analysis.

Venous thromboembolism (VTE), including deep vein thrombosis and pulmonary embolism, is a major cause of cardiovascular morbidity and mortality. Although perioperative VTE is well described, the prognostic significance of a prior history of VTE in patients undergoing transcatheter valve interventions remains unclear. We conducted a retrospective cohort study using the National Inpatient Sample from 2016 to 2020. Hospitalizations for elective isolated TAVR and TMVR were identified using ICD-10 procedure codes. Patients were stratified by the presence or absence of documented prior VTE. Multivariable regression models were used to evaluate associations between prior VTE and in-hospital mortality, length of stay, and hospitalization costs. Analyses were performed separately for TAVR and TMVR cohorts and adjusted for demographic, clinical, and hospital-level covariates. A total of 295,795 TAVR and 5,145 TMVR hospitalizations were identified. Prior VTE was present in 1.1% of TAVR and 2.8% of TMVR patients. Patients with prior VTE had significantly higher in-hospital mortality compared with those without VTE (TAVR: 11% vs. 2%; TMVR: 8% vs. 1.5%). After multivariable adjustment, prior VTE remained independently associated with higher odds of in-hospital mortality (TAVR odds ratio 5.96, 95% CI 4.31-8.22; TMVR odds ratio 5.58, 95% CI 1.67-18.59). Prior VTE was also associated with longer hospitalization and higher costs. Prior VTE is associated with higher in-hospital mortality, longer hospitalizations, and greater healthcare resource utilization among patients undergoing transcatheter valve interventions and may identify a high-risk subgroup.

Risk Factors for Early Postoperative Cognitive Dysfunction in Aortic Arch Replacement.

BACKGROUND: Postoperative cognitive dysfunction (POCD) is a common complication following aortic arch replacement. This study aimed to identify risk factors for early POCD in patients undergoing aortic arch replacement and determine the effect of POCD on long-term survival. METHODS: In this prospective cohort study, 103 patients who underwent aortic arch replacement for complex aortic arch diseases were enrolled. Cognitive function was assessed preoperatively and on postoperative days 5 to 7 using the Montreal Cognitive Assessment. POCD was defined as a ≥20% decline in total score compared with baseline. RESULTS: The incidence of POCD was 15.5%. Compared with the non-POCD group, patients with POCD were significantly older (62 ± 13 vs. 52 ± 13, p = 0.008), had a higher proportion of females (68.8 vs. 37.9%, p = 0.044), and experienced greater intraoperative blood loss (751 ± 165 vs. 667 ± 122 mL; p = 0.018). Postoperative adverse events were similar between the two groups. Significant declines were observed in the domains of visuospatial/executive function (p = 0.003), attention/concentration/working memory (p < 0.001), and orientation (p = 0.002). Multivariable logistic regression analysis identified age, female sex, and antegrade cerebral perfusion (ACP) time as independent risk factors for POCD. Midterm survival was similar between POCD and non-POCD groups (1-year survival: 100 vs. 95.2%; p = 0.437). CONCLUSION: POCD remains a common complication after aortic arch replacement. Advanced age, female sex, and prolonged ACP time are independent predictors of POCD. POCD was not associated with worse midterm survival. These findings may help preoperative risk stratification and optimization of intraoperative management.

Comparative prognostic value of GNRI, PNI, and CONUT scores for long-term mortality in patients undergoing transcatheter aortic valve replacement.

OBJECTIVE: This study aimed to comparatively evaluate the association between geriatric nutritional risk index (GNRI), prognostic nutritional index (PNI), and controlling nutritional status (CONUT) scores and long-term mortality in patients undergoing transcatheter aortic valve replacement (TAVR). METHOD: This retrospective observational study included 262 patients who underwent TAVR for severe symptomatic aortic stenosis between January 2015 and December 2018. Patients were divided into two groups based on all-cause mortality development during 7.6 years of follow-up: survivors and those who died. Nutritional status was assessed using pre-admission laboratory and anthropometric data, as well as GNRI, PNI, and CONUT scores. RESULTS: The mean age was 79.0 ± 6.4 years, and 45% of the patients were female. During the follow-up period, 106 patients (40.5%) died. Malnutrition prevalence was found to be 79.8% according to GNRI, 63.7% according to PNI, and 60.7% according to CONUT. In univariate analysis, GNRI (HR: 0.974, p = 0.035), PNI (HR: 0.959, p = 0.007), and CONUT (HR: 1.140, p < 0.001) were significantly associated with mortality. However, in multivariate analysis, none of these scores remained as independent predictors. In ROC analysis, AUC values for GNRI, CONUT, and PNI were found to be 0.626, 0.610, and 0.590, respectively. In Kaplan-Meier analysis, survival was lower in patients with poor nutritional status (log-rank p < 0.001). CONCLUSION: In patients undergoing TAVR, impaired nutritional status is associated with long-term mortality; However, GNRI, PNI, and CONUT scores are not clinically independent predictors of mortality. These scores may provide complementary information regarding nutritional status but showed limited discriminatory ability for mortality prediction.

Association of the CALLY Index With 30-Day Outcomes After Transcatheter Aortic Valve Replacement.

BACKGROUND: Systemic inflammation and nutritional status influence outcomes after transcatheter aortic valve replacement (TAVR). The C-reactive protein-albumin-lymphocyte (CALLY) index integrates these domains, but its short-term prognostic value and potential nonlinear associations after TAVR remain uncertain. AIMS: To evaluate the association of baseline CALLY with 30-day all-cause mortality, acute kidney injury (AKI), and stroke after TAVR, and to explore potential nonlinear relationships. METHODS: We retrospectively analyzed 816 consecutive TAVR patients stratified into low (n = 272), middle (n = 273), and high (n = 271) CALLY tertiles. Outcomes were defined according to Valve Academic Research Consortium-3 criteria. Cox models estimated crude and adjusted hazard ratios (HRs) with 95% confidence intervals (CIs). Multivariable models were adjusted for age, sex, diabetes, and baseline creatinine. Exploratory piecewise Cox models assessed nonlinearity. RESULTS: Within 30 days, 28 patients died (3.4%), 81 developed AKI (9.9%), and 35 experienced stroke (4.3%). Compared with the low tertile, the middle and high tertiles were associated with lower adjusted risks of AKI (middle: HR 0.53, 95% CI 0.31-0.90; p = 0.018; high: HR 0.50, 95% CI 0.29-0.85; p = 0.011). A similar inverse trend was observed for mortality (high vs. low: HR 0.43, 95% CI 0.18-1.06; p = 0.066), although statistical significance was not reached. No significant association was observed for stroke. Piecewise modeling demonstrated a significant overall association between CALLY and AKI (p = 0.043), suggesting a nonlinear threshold-type relationship with higher risk concentrated at lower CALLY values. CONCLUSIONS: Higher CALLY values were associated with a lower risk of 30-day AKI after TAVR, with evidence of a nonlinear threshold-type relationship. CALLY may serve as a simple inflammatory-nutritional marker for identifying patients at increased risk of early renal complications.

Diagnostic performance of angiography-derived coronary physiology in transcatheter aortic valve implantation pathway: a systematic review and diagnostic accuracy meta-analysis.

OBJECTIVES: Coronary artery disease affects nearly half of patients undergoing transcatheter aortic valve implantation (TAVI), but the accuracy of angiography-derived, wire-free coronary physiology in severe aortic stenosis remains uncertain. The authors evaluated its diagnostic performance for detecting fractional flow reserve (FFR)-defined significant stenoses in TAVI candidates and assessed whether accuracy differed when invasive FFR was measured before vs after TAVI. METHODS: A diagnostic accuracy meta-analysis was performed including studies reporting lesion-level comparisons between angiography-derived physiology (threshold ≤0.80) and invasive FFR (≤0.80) in patients undergoing TAVI evaluation. All included studies evaluated quantitative flow ratio (QFR) or Murray-law-based QFR; no eligible studies using FFRangio or vFFR were identified. Pooled sensitivity and specificity were calculated using random-effects models. Diagnostic odds ratios (DOR), likelihood ratios, and post-test probabilities were derived. Meta-regression evaluated the impact of FFR timing (CRD420261332222). RESULTS: Five studies met inclusion criteria. Four studies (422 lesions) contributed to the primary analysis and 3 studies (250 lesions) to the secondary analysis. In the primary analysis, pooled sensitivity was 0.79 (95% CI, 0.68-0.87) and specificity 0.88 (95% CI, 0.80-0.93) (DOR 28). In the secondary analysis, sensitivity was 0.71 (95% CI, 0.57-0.82) and specificity 0.95 (95% CI, 0.90-0.98) (DOR 46.5), with comparable global discrimination (Youden index 0.66 vs 0.67). Meta-regression showed no significant interaction by reference timing (P = .39). CONCLUSIONS: Angiography-derived coronary physiology demonstrates good diagnostic performance in patients undergoing TAVI evaluation, with comparable overall discrimination when referenced to both pre- and post-TAVI FFR, although interpretation is limited by the absence of a stable reference standard across hemodynamic states.

Successful off-label use of vascular closure devices in fully percutaneous transaxillary aortic valve implantation.

BACKGROUND: The axillary artery is an alternative access- site for transcatheter aortic valve implantation (TAVI) when femoral arteries are unfavourable. Simplified transaxillary-TAVI (TAx-TAVI) is performed completely percutaneously, using vascular closure device (VCD) techniques for arteriotomy closure. Concerns exist regarding major vascular complications with this technique. This registry-study describes off-label VCD use during simplified TAx-TAVI. METHODS: Consecutive severe aortic stenosis patients unsuitable for both surgery and transfemoral access were enrolled in our heart valve registry and underwent simplified TAx-TAVI using VCDs for arteriotomy closure. At the operator's discretion, closure was performed with a collagen-based plug (MANTA) or a suture-based system (double ProGlide). The primary endpoint was axillary access-related major vascular complications in hospital and at 30 days according to Valve Academic Research Consortium (VARC-3) definitions. Secondary endpoints included axillary access-site bleeding and all-cause mortality during hospitalisation to 30 days post-TAx-TAVI. RESULTS: From January 2022 to January 2024, 32 patients (mean age 77 years, 31.3% female) underwent simplified TAx-TAVI using VCDs. MANTA and ProGlide were each used in 50.0% of cases (n=16). Local anaesthesia with conscious sedation was used in 21.9% (n=7). Overall VARC-3 device success was 96.9% (31/32). VCD failure occurred in 25.0% (8/32) and was numerically more frequent with ProGlide (31.3%) than MANTA (18.8%). A covered stent was required for definitive axillary haemostasis in 12.5% (4/32). The 30-day axillary major vascular complication rate was 3.1% (1/32). No major bleeding complications occurred. All-cause 30-day mortality was 3.1% (1/32). New permanent pacemaker implantation occurred in 12.5% (4/32). At 30 days, New York Heart association (NYHA) class improved by at least one category in 68.8% (22/32). CONCLUSIONS: In these simplified TAx-TAVI cases, MANTA and ProGlide VCDs performed well in terms of vascular and bleeding complications. Simplified TAx-TAVI requires advanced access-site management skills, including covered stent use. We found VCDs approved for femoral use safe with axillary access.

[Practical management of drug-induced long QT syndrome].

Drug-induced long QT syndrome is a modifiable cause of fatal ventricular arrhythmias. Common drugs such as antiarrhythmics, psychotropic drugs, and antibiotics prolong the QTc interval via potassium channel (hERG/IKr) inhibition and promote torsade de pointes tachycardias. A prerequisite for the diagnosis is an accurate QTc measurement, which is associated with high error rates in automated analysis. In case of suspicion, manual QT measurement is advised, followed by the use of an appropriate formula for heart rate correction. Differential diagnosis should consider congenital long QT syndrome, electrolyte disturbances, intoxication, and structural heart disease, with diagnosis based on the modified Schwartz score. For medication lists and new therapies, drug lists and interaction analyses should be used, particularly to identify high-risk drug interactions such as psychotropic drugs combined with antibiotics and/or diuretics. In cases of increased risk at a QTc interval ≥ 500 ms, trigger substances must be immediately discontinued, and electrolyte, heart rate, and volume status normalized. In acute situations with torsade de pointes tachycardia, treatment using magnesium, isoproterenol, overdrive stimulation, and (if necessary) defibrillation is indicated. Follow-up electrocardiograms before, during, and (if discontinued due to QT prolongation) after therapy until QT normalization, avoidance of further trigger substances, regular follow-up controls, genetic counseling in the case of suspected congenital long QT syndrome, and comprehensive patient education form the basis of aftercare for this condition.

Sennoside A Ameliorates Myocardial Fibrosis After Myocardial Infarction by Binding to KDM4B and Regulates IRX2 Expression.

PURPOSE: Myocardial fibrosis following myocardial infarction (MI) drives the progression of heart failure, yet effective therapeutic drugs remain unavailable. This study aimed to evaluate the anti-fibrotic effect of the natural small-molecule compound sennoside A (SA) on pathological fibrosis specifically at 28 days post-MI, and to explore its underlying molecular mechanism. METHODS: Mouse MI models were established and treated with SA for 28 days. To evaluate therapeutic efficacy, cardiac function was assessed by echocardiography, and myocardial fibrosis was quantified using histopathological staining. For mechanistic investigation, molecular docking and enzymatic activity assays were performed to determine whether SA targets the histone demethylase KDM4B. In vitro experiments were conducted to characterize the effects of SA on fibroblast activation and extracellular matrix production. RESULTS: SA significantly improved cardiac function, as reflected by increased left ventricular ejection fraction (LVEF) and fractional shortening (FS). Histological analysis showed that SA significantly reduced fibrotic area and collagen deposition compared with untreated MI mice. Mechanistically, molecular docking predicted a stable interaction between SA and KDM4B, and enzymatic assays confirmed that SA inhibited KDM4B activity and increased the modification of H3K9me3. Meanwhile, IRX2 expression was significantly downregulated, which was accompanied by reduced expression of fibrotic markers, extracellular matrix deposition and fibroblast phenotypic transformation. CONCLUSION: This study identifies sennoside A binds to KDM4B and reduces the demethylase activity, thereby reducing IRX2 expression in a KDM4B-associated manner and ameliorating cardiac fibrosis after myocardial infarction and improving cardiac function.

Post-COVID paediatric dysautonomia: never the heart, always the brain-myth or maxim?

Paediatric dysautonomia has become increasingly recognised in children and adolescents, particularly in the post-COVID era. Affected patients commonly present with dizziness, palpitations, exercise intolerance, fatigue, and syncope, although reported prevalence varies widely because of evolving definitions and heterogeneous referral patterns. Contemporary evidence suggests that post-COVID dysautonomia arises from complex interactions among central autonomic network dysfunction, neurovascular dysregulation, impaired venous return, endothelial injury, hypovolemia, and altered cerebral perfusion, with tachycardia often representing a compensatory physiological response rather than a primary cardiac abnormality. Clinical phenotypes include postural orthostatic tachycardia syndrome, neurocardiogenic syncope, orthostatic hypotension, inappropriate sinus tachycardia, and undifferentiated orthostatic intolerance, frequently accompanied by fatigue, cognitive dysfunction, gastrointestinal symptoms, sleep disturbances, and post-exertional symptom exacerbation. Paediatric dysautonomia is best conceptualised as a distributed brain-heart-vascular network disorder that requires mechanistic understanding, standardised orthostatic assessment, and careful exclusion of structural heart disease and arrhythmia. The rapid expansion of specialised dysautonomia programmes and direct-to-consumer diagnostic pathways has also contributed to broader, and occasionally premature, application of autonomic diagnoses. Management should follow a stepwise, mechanism-guided approach emphasising patient education, trigger avoidance, hydration and salt optimisation, lower-body compression, individualised exercise rehabilitation, pacing strategies when post-exertional symptom exacerbation is present, school accommodations, and phenotype-directed pharmacotherapy for persistent functional impairment. Although post-COVID dysautonomia shares features with established paediatric autonomic disorders, important gaps remain in disease definitions, mechanistic understanding, and evidence-based treatment, underscoring the need for multidisciplinary care, standardised diagnostic frameworks, and prospective paediatric research.

Real-World Performance and Mid-Term Durability of the Myval Transcatheter Heart Valve in Patients Undergoing Transcatheter Aortic Valve Replacement.

BACKGROUND: The Myval Transcatheter Heart Valve (THV) was designed to address limitations of earlier devices, such as paravalvular leak and sizing restrictions. The LANDMARK trial showed non-inferior short-term outcomes versus established valves in a randomized population of patients with severe aortic stenosis eligible for TAVR with the compared devices. However, confirmation of these findings in routine clinical practice remains important. This study evaluates the real-world safety, efficacy, and mid-term durability of Myval in severe aortic stenosis. AIMS: This study evaluates the real-world safety, efficacy, and mid-term durability of the Myval THV in patients with severe symptomatic aortic stenosis undergoing TAVR in a consecutive single-center registry. METHODS: We conducted a retrospective, single-center, single-arm study including 214 consecutive patients who underwent Myval THV implantation between December 2020 and February 2025, with at least 30-day follow-up. Clinical events were reported as incidence rates per 100 patient-years, and hemodynamic performance was assessed using mean profile charts with 95% confidence intervals. RESULTS: Among 214 patients (mean age 77 years; 41% female), procedural success was 97.7%. Aortic valve area increased from 0.68 cm2 at baseline to 1.79 cm2 at 30 days, with mean gradients falling from 55.6 mmHg to 10.2 mmHg and remaining stable at 3 years. At 1 year, all-cause mortality was 9.0%, stroke 2.7%, and new pacemaker implantation 11.8%, while structural valve deterioration was rare (3.4%). CONCLUSION: In this real-world cohort, TAVR with the Myval THV showed high procedural success, sustained mid-term hemodynamic improvement, and complication rates comparable to benchmark devices. These findings support its potential as a safe and effective option for severe aortic stenosis, although confirmation in larger, multicentre studies with extended follow-up is warranted.

The Impact of Institutional Volume on Transcatheter Aortic Valve Replacement Outcomes.

Prior studies have demonstrated a consistent association between higher institutional procedural volume and improved clinical outcomes. To evaluate the relationship between institutional transcatheter aortic valve replacement (TAVR) volume and key patient outcomes, and to identify which metrics are most sensitive to volume variation. We analyzed 91,494 non-impella-assisted TAVR procedures performed at 118 US hospitals using the Vizient Clinical Data Base (28,077 in 2022; 30,602 in 2023; 32,815 in 2024). Annual case volume categories (e.g., 1-100 through 801-900) were used to stratify institutions. Key outcomes-including mean length of stay (LOS), early mortality, mean ICU stay, and observed mortality-were compared across volume groups using ANOVA and ANCOVA to adjust for case mix index (CMI). Higher institutional TAVR volume was significantly associated with shorter mean LOS in 2022 (ANOVA p = 0.0007; ANCOVA p < 0.0001), 2023 (ANOVA p = 0.0016; ANCOVA p = 0.0003), and 2024 (ANOVA p < 0.0001; ANCOVA p < 0.0001). In 2023, higher volume was associated with significantly lower early mortality (ANOVA p = 0.0195; ANCOVA p = 0.0165). In 2024, higher volume correlated with significantly lower overall observed mortality (ANOVA p = 0.0004; ANCOVA p < 0.0001). No significant associations were found between volume and mean ICU stay in any year. Higher institutional TAVR volume is independently associated with improved outcomes, including reduced LOS, early mortality, and overall observed mortality. These associations persist after adjustment for CMI, suggesting intrinsic differences in care delivery across volume strata.

Heart Failure Pharmacotherapy Across the TAVR Continuum.

Take Home Illustration. Heart Failure Pharmacotherapy Across the TAVR Continuum. GDMT recommendations across the pre-, peri-, and post-procedural phases of TAVR. The recommendations are based on available evidence for each drug class regarding safety, efficacy, and impact on clinical outcomes. BB = beta blocker; HF = heart failure; GDMT = guideline directed medical therapy; HFpEF = heart failure with preserved ejection fraction; HFrEF = heart failure with reduced ejection fraction; MRA = mineralocorticoid receptor antagonist; RASi = renin angiotensin system inhibitor; SGLT2i = sodium glucose transporter 2 inhibitor; TAVR = transcatheter aortic valve replacement. Transcatheter aortic valve replacement (TAVR) is an increasingly common treatment option for severe symptomatic aortic stenosis. However, heart failure often persists because of incomplete reversal of myocardial remodeling, fibrosis, and diastolic dysfunction. TAVR corrects valvular afterload but does not resolve the underlying myocardial disease. Guideline-directed medical therapy (GDMT), including renin-angiotensin system inhibitors (RASi), sodium-glucose cotransporter-2 inhibitors (SGLT2i), mineralocorticoid receptor antagonists (MRAs), and beta-blockers (BBs), has a strong mechanistic rationale and potential clinical benefit, although evidence in TAVR populations remains heterogeneous and is largely observational. Nonetheless, accumulating data support continuation and early optimization of GDMT in the pre-, peri-, and post-TAVR periods, with the most consistent benefit observed for RASi and SGLT2i. Key uncertainties remain regarding optimal timing, patient selection, and class-specific effects. This State-of-the-Art Review integrates current evidence and proposes a framework to guide GDMT use across the TAVR continuum while defining priorities for future randomized trials Condensed Abstract: Post-TAVR heart failure frequently persists because of residual myocardial disease. GDMT, including RASi, SGLT2i, MRAs, and BBs, may improve outcomes but remains underutilized and inconsistently addressed in current guidelines. GDMT should ideally be continued when tolerated and optimized early across the TAVR continuum, particularly RASi and SGLT2i. Therapy should be tailored to heart failure phenotype across the TAVR continuum. Randomized trials are needed to define optimal implementation strategies.

Revisiting the Link Between Substrate and Ventricular Tachycardia Rate: The Critical Role of Conduction Isthmus Structure and Function.

BACKGROUND: Ventricular tachycardia (VT) rate determines hemodynamic tolerance and informs risk stratification and ablation strategy. Although global substrate metrics have been associated with VT dynamics, the relative contribution of local conduction-isthmus properties remains incompletely defined. OBJECTIVE: We compared the predictive value of global versus isthmus-specific substrate features on VT rate. METHODS: In a prospective cohort, 62 patients undergoing ablation for scar-related VT underwent high-density electroanatomical mapping and late gadolinium-enhanced cardiac magnetic resonance. Functional metrics included total activation time (TAT), deceleration zone (DZ) duration/area, and late potential (LP) area; structural metrics included scar/border-zone mass and conduction channel (CC) length, protected volume and 2D architecture. The primary outcome was fast VT defined as >180 bpm. RESULTS: We analysed 107 VT episodes, and 39% (n=42) were classified as fast. Only isthmus-specific features independently predicted fast VT: DZ duration<110 ms (aOR 21.16, p<0.001) and CC length <3cm (aOR 10.18, p=0.02). These thresholds showed strong discrimination- AUC 0.88 for DZ duration <110 ms and 0.89 for CC length <30 mm; LP area <20 cm2 yielded AUC 0.79-each with ≥80% global accuracy. Structural-functional coupling was observed: CC length correlated with DZ duration (ρ=0.54), DZ area (ρ=0.35), and LP area (ρ=0.55), all p≤0.01. Compared with ICM, NICM had faster VT and a more compact isthmus; however, aetiology was not an independent predictor and did not modify isthmus-VT rate associations. CONCLUSIONS: Conduction isthmus properties predominate as determinants of VT rate. Quantitative characterization of VT-related conducting segments may support procedural planning in structural heart disease.

Same-Day Discharge After Transcatheter Aortic Valve Implantation: Who, When, and How?

The burden of severe aortic stenosis requiring treatment is growing due to ageing populations. This places increased demands on health resources due to the growing number of transcatheter aortic valve implantation (TAVI) procedures and hospital bed occupancy. There are several studies of same-day discharge (SDD) after coronary angioplasty demonstrating its safety, particularly in transfemoral cases. There has been significant evolution in techniques and technologies underpinning TAVI, which have reduced its risk profile over time. As a result, several observational studies have demonstrated that SDD after TAVI is safe and effective. Careful selection of low-risk patients and a minimalist TAVI approach, with appropriate post-procedure review and follow-up, are crucial for successful SDD after TAVI. However, there is a need for randomised trials to validate this practice. This article provides a state-of-the-art overview and guidance to safely and effectively implement a SDD-TAVI service to improve the healthcare system efficiency while enhancing patient satisfaction and recovery.

Percutaneous Coronary Intervention Prior to Transcatheter Aortic Valve Implantation: A Bayesian Meta-Analysis of Randomized Controlled Trials.

BACKGROUND: The optimal management of concomitant coronary artery disease (CAD) during transcatheter aortic valve implantation (TAVI) remains controversial due to conflicting data from randomized controlled trials (RCTs). METHODS: A systematic review and Bayesian meta-analysis of RCTs (through April 2026) compared pre-TAVI percutaneous coronary intervention (PCI) versus conservative management in TAVI patients with CAD. Effect measures were risk ratios (RRs) with 95% credible intervals (CrIs) using a Bayesian random-effects model. RESULTS: Three RCTs involving 1,156 patients were included, with 579 (50%) randomized to pre-TAVI PCI. No evidence of benefit was observed for myocardial infarction (RR, 0.83; 95% CrI, 0.44 to 1.60), all-cause mortality (RR, 0.92; 95% CrI, 0.62 to 1.35), acute kidney injury (RR, 1.01; 95% CrI, 0.41 to 2.73), rehospitalization (RR, 1.08; 95% CrI, 0.67 to 1.75), cardiovascular death (RR, 0.74; 95% CrI, 0.44 to 1.24) or stroke (RR, 0.71; 95% CrI, 0.42 to 1.20). Although pre-TAVI PCI was associated with fewer subsequent revascularizations (RR, 0.27; 95% CrI, 0.11 to 0.66), this outcome is vulnerable to ascertainment and treatment bias. Conversely, point estimates favored conservative management for major bleeding (RR, 1.57; 95% CrI, 0.96 to 2.57). CONCLUSION: Pre-TAVI PCI yielded no hard clinical benefits and likely increased major bleeding risk. While it reduced subsequent revascularizations, a soft, clinician-driven endpoint, this did not improve hospital-free survival. These findings strongly support a selective, lesion-guided approach over routine intervention.

Conduction system pacing in TAVR patients requiring permanent pacemaker implantation.

BACKGROUND: Permanent pacemaker (PPM) implantation remains a common complication after transcatheter aortic valve replacement (TAVR) and is associated with poorer long-term outcomes. Conduction system pacing (CSP) has emerged as a promising alternative to reduce the negative effects of chronic pacing. OBJECTIVES: To determine whether CSP is associated with improved outcomes in patients requiring a PPM after TAVR. METHODS: Observational multicenter study including consecutive patients requiring PPM implantation within 30 days after TAVR. This population was propensity matched using a logistic regression model. The primary outcome was a composite endpoint including death and heart failure hospitalization at 1-year follow-up. Echocardiographic and ECG changes over time were secondary endpoints. RESULTS: After propensity score matching, 706 patients were included: 185(26.2%) in the CSP group and 521 (73.8%) in the RVP group. CSP was associated with a significantly lower risk of all-cause death or heart-failure hospitalization at 1 year compared to RVP (10.8% vs 20.9%; adjusted HR 0.48 [0.30-0.78]; p = 0.003). This was driven by significant reductions in both all-cause mortality (HR 0.52 [0.28-0.96]; p = 0.036) and heart-failure hospitalization (HR 0.50 [0.25-0.99]; p = 0.049). In addition, CSP was associated with a significantly shorter QRS duration at 30 days compared with RVP (121± 22 ms vs. 141± 18 ms; p < 0.001), as well as a significant improvement in LVEF at 1-year follow-up (+2.8 percentage points; p<0.001). CONCLUSIONS: In TAVR patients requiring PPM, CSP showed better 1-year clinical outcomes than RVP. Prospective randomized studies are needed to confirm longer-term benefits and refine patient selection.

Heart failure, structural heart disease and emerging cardiovascular risk markers.

Cardiovascular medicine is progressively evolving towards a more personalised approach integrating advanced imaging, haemodynamic assessment, biomarkers, rehabilitation, and digital technologies. The studies featured in this issue of Acta Cardiologica provide new insights into heart failure, structural heart disease, coronary artery disease, congenital heart disease, and cardiovascular prevention. Collectively, they highlight the growing importance of comprehensive risk stratification and individualised management strategies to improve cardiovascular outcomes.

Association of Valvular Disease Progression Using Echocardiographic Findings in a Large U.S. Cohort.

BACKGROUND: The prevalence of valvular disease in the US is approximately 2.5%. Given that over 5 million Americans are affected, it is crucial to find those at higher risk of progression. The goal of this paper is to uncover which patients are more likely to have valvular disease progression using demographic factors, EKG and echocardiogram (ECHO) findings. METHODS: This paper utilized the EchoNext Database, which pairs 100,000 electrocardiograms and echocardiograms based on specific structural heart disease labels. Univariate and multivariate logistic regression were used to find risk factors for progression for aortic stenosis (AS), aortic regurgitation (AR), mitral regurgitation (MR), tricuspid regurgitation (TR) and pulmonary insufficiency (PI). Progression was defined as worsened valvular disease on follow up ECHOs. RESULTS: There were 100,000 encounters of EKGs/ECHOs included in the study, and 36,286 individual patients. Independent risk factors of AS progression were age and QRS duration. Age, QRS duration, AS, AR, MR and pericardial effusion were independent risk factors for AR progression. MR progression was independently associated with PR, QRS and QTc durations, MR and left ventricular ejection fraction. QRS duration, MR, TR and right ventricular function were independent factors for TR progression. Lastly, for PI progression, male sex and AS were found to be independent risk factors. CONCLUSIONS: The combination of demographic, electrocardiographic and echocardiographic findings can help better assess the progression of valvular disease.

Prognostic Utility of the Dicrotic Notch Index in Patients Undergoing Transcatheter Aortic Valve Replacement.

BACKGROUND: The dicrotic notch (DN) on the central aortic pressure waveform reflects aortic valve closure. We aimed to assess the clinical utility of the DN index (DNI) in patients with severe aortic stenosis undergoing transcatheter aortic valve replacement (TAVR). METHODS: In this retrospective study, we analyzed 569 patients with aortic stenosis who underwent TAVR between January 2019 and December 2020. Aortic waveform data were used to measure systolic, diastolic, and DN pressures, whereas DNI was calculated as (systolic pressure - DN)/pulse pressure. Pre-TAVR and post-TAVR hemodynamic parameters were compared, and survival analysis was performed using Cox regression with post-TAVR/pre-TAVR DNI ratio as an independent covariate. RESULTS: Compared to pre-TAVR, DN pressure (92.18 to 95.37, p < 0.001) and DNI (0.45 to 0.58, p < 0.001) significantly increased post TAVR. Higher baseline DNI was predicted by carotid disease, diabetes mellitus, and a higher ejection fraction at baseline. Post-TAVR to pre-TAVR DNI ratio cut point >1.19 is an independent predictor of event-free survival at 2 years. Patients with higher post-DNI/pre-DNI ratio had a significantly lower risk of all-cause mortality in adjusted analyses (hazard ratio: 0.53, 95% confidence interval [CI]: 0.34-0.82). CONCLUSIONS: More than 20% increase in DNI post-TAVR was associated with a lower long-term risk of all-cause mortality. Further studies are needed to understand the determinants of the increase in DNI and if this can be modulated by procedural modifications.

Septic cardiomyopathy: Fact or fiction?

UNLABELLED: Septic cardiomyopathy (SCM) represents a dynamic form of myocardial dysfunction occurring in the setting of sepsis. Unlike chronic ischemic or structural heart disease, SCM arises acutely due to a complex interplay of inflammatory, metabolic, endothelial, and microvascular mechanisms and often, though not always, demonstrates reversibility within days.6'8'9 Despite increasing recognition, SCM remains poorly defined due to the absence of standardized diagnostic criteria and substantial overlap with other acute cardiomyopathies, including Takotsubo cardiomyopathy and myocarditis.10 Current diagnostic approaches rely primarily on echocardiography, strain imaging, biomarkers, and clinical trajectory, while emerging modalities such as cardiac magnetic resonance imaging may provide additional insight into myocardial inflammation, edema, and fibrosis. Management remains largely supportive and centered on treatment of the underlying septic process, with ongoing uncertainty regarding targeted heart failure therapies and adjunctive interventions. This review summarizes current understanding of SCM pathophysiology, diagnosis, imaging findings, and management while critically examining whether SCM represents a distinct disease entity or part of a broader stress-inflammatory cardiomyopathy spectrum. OBJECTIVES: The objectives include: proposing a broad definition and description of septic cardiomyopathy, providing a comprehensive literature review on current diagnostic and management options available for septic cardiomyopathy, and describing the limitations and gaps in this diagnosis and possible direction of future studies.

Clinical outcomes following transcatheter aortic valve replacement in patients with concordant versus discordant aortic stenosis.

STUDY OBJECTIVE: This study aimed to evaluate clinical outcomes of patients with symptomatic discordant (aortic stenosis) AS following transcatheter aortic valve replacement (TAVR). DESIGN: This is a retrospective cohort study. SETTING: Patients who underwent a TAVR for severe symptomatic native AS with preserved left ventricular ejection fraction ≥50% from 2012 to 2022 at our institution were included. PARTICIPANTS: Patients were divided into two cohorts, concordant AS (met all AS criteria) and discordant AS (< 3 criteria). INTERVENTIONS: TAVR. MAIN OUTCOMES MEASURES: The primary endpoint was all cause mortality and secondary outcomes were hospital readmissions for myocardial infarction (MI) and stroke. RESULTS: This study evaluated 2021 patients; the median age was 82.6 (77.0-87.2) years, and 53% were female. There was no difference in long-term mortality between discordant or concordant AS (HR: 0.89 [95% CI: 0.77-1.02]; P = 0.09). However, the discordant group had a higher 1-year mortality rate than the concordant group (14.5% vs 10.1%, respectively; P = 0.0054) and comparable mortality rates at 5 years (52.0% vs 50.5%, respectively; P = 0.18). The long-term readmission rate for MI was higher for the discordant group (HR: 0.47 [95% CI: 0.27-0.80]; P = 0.005), and there was no difference in readmission for stroke or transient ischemic attack (HR: 1.33 [95% CI: 0.92-1.94]; P = 0.133). CONCLUSIONS: Patients with symptomatic severe AS with discordant echocardiographic findings may have similar survival outcomes than those with concordant AS after undergoing TAVR.

Is Transcatheter Aortic Valve Implantation Still Effective in Nonagenarians?

BACKGROUND: Transcatheter aortic valve implantation (TAVI) has become the preferred therapeutic method for elderly patients presenting with severe symptomatic aortic stenosis (AS). Most TAVI procedures are performed in patients between 75-85 years of age. A few publications exist on TAVI in patients over 90 years, yet the outcome and complication rates are inconsistent. OBJECTIVES: To identify all patients with AS who underwent TAVI between 2019 and 2020, specifically those age > 90 years at the time of the TAVI. METHODS: We reviewed the Maccabi Healthcare Services database for all severe/critical AS patients who underwent TAVI between 2019 and 2020, specifically those age > 90 years at the time of TAVI. These patients were compared to all patients aged 80-89 years who underwent TAVI during the same time. Follow-up ended on 31 December 2022. We compared mortality and complications rates in nonagenarians vs. those 80-89 years and evaluated the change in left ventricular ejection fraction before and after the procedure. RESULTS: We identified 36 nonagenarians who underwent TAVI during the study period, mean age 92.3 years, male:female ratio 15:21. During a mean follow-up period of 3 years, 44% of nonagenarians died, 26% of the control patients died (P < 0.01). CONCLUSIONS: TAVI in nonagenarians is feasible. Total mortality during follow-up was significantly higher in nonagenarians. Overall complication rates were also higher in nonagenarians, mostly due to vascular complications. Left ventricular dysfunction appeared to improve after TAVI, even in nonagenarians.

The Utility of Cerebral Protection Devices in Transcatheter Aortic Valve Replacement: A Systematic Review and Bayesian Meta-analysis.

BACKGROUND: Cerebral embolic protection (CEP) devices are designed to reduce procedure-related stroke during transcatheter aortic valve replacement (TAVR). In light of recent randomized controlled trials (RCTs), we performed an updated meta-analysis to evaluate their impact on stroke and mortality. METHODS: We systematically searched PubMed, EMBASE, and Cochrane Central through June 2025 for RCTs comparing TAVR with or without the CEP devices. Outcomes of interest included all stroke, disabling stroke, and all-cause mortality. Data were extracted and pooled using a random-effects frequentist meta-analysis. In addition, a Bayesian meta-analysis was performed with both vague and informative priors to evaluate the probability of a clinically meaningful reduction in stroke. RESULTS: Eight RCTs with 11,632 patients (CEP group = 5969; control group = 5663) were included. We found no difference in all strokes between the groups (risk ratio, 0.92; 95% CI, 0.74-1.15), nor in disabling stroke or all-cause mortality. In the Bayesian meta-analysis for all strokes using a vague prior, posterior probabilities that the risk ratio was <1, <0.9, and <0.67 were 71.9%, 35.6%, and 0.1%, respectively. For disabling stroke, the probabilities were 89.6%, 73.3%, and 12.1%, respectively. With an informative prior, posterior probabilities for all strokes were 95.9%, 39.0%, and 0% and the probabilities for disabling strokes were 98.3%, 73.8%, and 0%, respectively. CONCLUSIONS: CEP devices did not significantly reduce stroke or mortality during TAVR, and the probability of a clinically meaningful benefit was low. Larger studies with extended follow-up are warranted to clarify their role in contemporary practice.

Long-term outcomes of patients receiving Dialysis and undergoing Transcatheter aortic valve replacement with contemporary balloon-expandable valves.

BACKGROUND: Long-term clinical outcomes after transcatheter aortic valve replacement (TAVR) in patients with severe aortic stenosis who received dialysis remain poorly investigated. Therefore, we aimed to evaluate long-term outcomes after TAVR using a contemporary balloon-expandable valve (BEV) in patients who received dialysis compared with those who did not. METHODS: In this single-center study, 143 patients who received dialysis were identified among 3189 patients who underwent TAVR with a contemporary BEV between June 2015 and February 2024. After propensity score matching, long-term outcomes were compared between 139 patients who received dialysis and 139 patients who did not. Causes of death after TAVR and predictors of mortality in the dialysis group were also investigated. RESULTS: Patients who received dialysis had higher 5-year mortality (adjusted HR: 2.38; 95% CI: 1.40-4.04; P < 0.001) than those who did not. Most deaths in the dialysis group occurred within 3 years after TAVR, and over 50% of the deaths were noncardiac-related, with infection as the leading cause. No significant differences were observed between the two groups in 5-year heart failure rehospitalization (subdistribution HR [sHR]: 1.20; 95% CI: 0.56-2.54; P = 0.640), aortic valve reintervention (sHR: 2.47; 95% CI: 0.40-15.19; P = 0.330), or disabling stroke (sHR: 0.35; 95% CI: 0.07-1.70; P = 0.190). In the dialysis group, baseline moderate or severe tricuspid regurgitation was independently associated with all-cause mortality. CONCLUSIONS: Patients who received dialysis had higher 5-year mortality than those who did not, with an increase in noncardiac deaths, particularly due to infection.

Clinical Experience of Transcatheter Tricuspid Valve-In-Ring Interventions With Incomplete Rings: Transjugular and Transfemoral Approaches.

•Tricuspid valve-in-ring using balloon-expandable valves appeared feasible via both transjugular and transfemoral approaches in this small single-center series.•Procedural success was higher with the transjugular approach (86%) than the transfemoral approach (60%).•No access-site complications occurred with transjugular access, whereas 1 groin complication (20%) occurred transfemorally.•Paravalvular leak rates were lower with transjugular (29%) versus transfemoral access (60%).•Paravalvular leak was most frequent with rigid Contour 3D and semirigid Carpentier-Edwards rings, and lowest with MC3 and CG Future bands.

Quantitative Assessment of Myocardial Velocity and Dyssynchrony in Fontan Circulation Using MR Tissue Phase Mapping.

Magnetic resonance tissue phase mapping (TPM) has been used to encode voxel-wise myocardial motion velocity in various cardiac diseases. This study aimed to quantify alterations in myocardial motion velocity in the functional ventricle of Fontan patients using TPM and to investigate the relationship between myocardial motion and cardiac function. We prospectively enrolled 28 Fontan patients and 42 age- and sex-matched normal controls. Myocardial motion velocities were assessed using TPM in the longitudinal (Vz), radial (Vr), and circumferential (Vphi) directions. We evaluated the peak velocities, time-to-peak (TTPz, TTPr), and dyssynchrony index (DIz, DIr). Circumferential motion abnormalities were assessed using peak-to-peak (PTP) values, Vphi inconsistency, and twist. Compared to controls, Fontan patients demonstrated significantly reduced peak Vz and Vr during both systole and diastole (all p < 0.001), as well as prolonged systolic TTPz (p = 0.002) and TTPr (p < 0.001). Diastolic DIz was increased (p < 0.001), whereas systolic DIr was decreased (p = 0.04). In multivariable regression analysis, ejection fraction of Fontan patients positively correlated with peak systolic Vr and negatively correlated with mid Vphi PTP (R2 = 0.639). The cardiac output was positively associated with peak systolic Vr and diastolic DIz (R2 = 0.578). TPM may provide quantitative MR biomarkers for regional myocardial motion abnormalities, including impaired myocardial motion velocities, delayed contraction timing, and altered motion synchronization, in Fontan patients. These findings suggest global ventricular dysfunction and may provide insight into the mechanisms underlying reduced ejection fraction and cardiac output in the functional ventricle physiology in Fontan patients.

Temporizing Balloon Aortic Valvuloplasty Prior to Transcatheter Aortic Valve Replacement in Decompensated Severe Aortic Stenosis.

Temporizing balloon aortic valvuloplasty (BAV) may be utilized in the management of decompensated severe aortic stenosis (AS). BAV is occasionally used as a bridge to eventual transcatheter aortic valve replacement (TAVR). We sought to evaluate the outcomes of urgent inpatient TAVR versus BAV followed by TAVR (BAVTAV). The United States Medicare database was used to evaluate all beneficiaries undergoing TAVR (n=227,145) or BAV (n=16,643) from 2018-2022. Patients were stratified into three cohorts: urgent inpatient TAVR without BAV, urgent BAV followed by inpatient TAVR (urgent BAVTAV), and urgent BAV followed by elective outpatient TAVR (elective BAVTAV). To adjust for selection bias, doubly robust risk-adjustment was performed with inverse probability weighting and multilevel regression to assess periprocedural and 5-year outcomes. A total of 23,762 patients underwent urgent TAVR without BAV, while 4,404 patients received BAVTAV (1,503 urgent, 2,901 elective). Inpatient mortality of urgent TAVR, urgent BAVTAV, and elective BAVTAV was 3.0%, 5.3%, and 1.5%, respectively, with a similar association for acute stroke (2.1% vs 2.7% vs 2.0%), and new pacemaker implantation (8.5% vs 8.5% vs 6.0%). After risk adjustment, elective BAVTAV was associated with lower index mortality (OR 0.61, p=0.011), stroke (OR 0.55, p<0.0001), and longitudinal mortality (HR 0.67, p<0.001) compared to urgent TAVR. Urgent BAVTAV was associated with higher index and longitudinal mortality. In conclusion, among Medicare beneficiaries with acutely decompensated severe aortic stenosis, temporizing BAV as a bridge to future outpatient elective TAVR appears to be a viable treatment strategy when felt to be medically possible.

The 2025 Accra Declaration on Upskilling and Cost- Effective Cardiac Surgery in Africa.

The Pan-African Society for Cardiothoracic Surgery (PASCaTS) organized the 1st Pan-African Cardiothoracic Surgery Summit on 21 to 24 February 2025 in Accra, Ghana. The summit brought together leading specialists from across Africa, China, Europe, South America and the USA to address the growing burden of cardiovascular disease, to share their vision for the fight against cardiovascular disease, to raise standards in the diagnosis, treatment and recovery of patients thereby improving procedural safety and clinical outcomes in Africa. The experts agreed on the need for cost effectiveness in cardiac surgery, simulation skills training, an African regional cardiothoracic surgery database, African heart team fellowship programs and specialized working groups to guide cardiovascular diagnostics and treatments focusing on critical areas such as congenital heart surgery, valve surgery and coronary artery bypass surgery (CABG) procedures which are becoming increasingly necessary in Africa due to the rise in cardiovascular emergencies, and finally explore solutions tailored to the continent's unique healthcare challenges. The incentives generated from the summit are formulated as the "2025 Accra Declaration" to serve as roadmaps and implementable guidelines for promoting high-level cardiovascular surgery and reforms in Africa in collaboration with cardiologists and other allied cardiovascular professionals.

Systematic Ambulatory ECG Monitoring for Preventing Life-Threatening Cardiovascular Events Following TAVR.

BACKGROUND: Although ambulatory ECG (AECG) monitoring has been assessed after transcatheter aortic valve replacement (TAVR), its impact on life-threatening cardiovascular events remains unclear. This study aimed to evaluate whether systematic AECG monitoring after TAVR reduces life-threatening cardiovascular events during the first year of follow-up. METHODS: The study included 1217 consecutive patients who underwent TAVR and were discharged without a permanent pacemaker. Of these, 211 consecutive patients received systematic 14-day AECG monitoring at discharge as part of the RECORD registry. The remaining 1006 patients who underwent TAVR within the 3 years before and after the registry period without systematic AECG monitoring constituted the control group. The primary end point was a composite of sudden cardiac death, syncope/presyncope due to symptomatic arrhythmias, or stroke at 1-year. RESULTS: Baseline and procedural characteristics were similar between groups, except for a higher use of self-expandable valves in the control group (P=0.005). Systematic AECG monitoring was associated with a lower incidence of the primary end point (1.9% versus 6.6%; adjusted hazard ratio, 0.27 [0.10-0.74]; P=0.011), mainly driven by a lower rate of sudden death or arrhythmic syncope/presyncope (0.9% versus 4.0%; adjusted hazard ratio, 0.22 [0.05-0.89]; P=0.034). All sudden death cases occurred in the control group, at a median of 96 (33-235) days after TAVR. New-onset atrial fibrillation was diagnosed in 8.9% of the systematic AECG patients (versus 1.8% in the control group; adjusted hazard ratio, 5.31 [2.47-11.38]; P<0.001), leading to new oral anticoagulation in 71.4% of cases. Stroke and permanent pacemaker implantation rates at 1 year were similar between groups, although permanent pacemaker implantation occurred earlier in the AECG group (25 versus 104 days; P<0.001). CONCLUSIONS: Systematic AECG monitoring after TAVR enables earlier detection of severe arrhythmias and is associated with fewer life-threatening cardiovascular events within 1 year. These findings support the need for a randomized trial. REGISTRATION: URL: https://www.clinicaltrials.gov; Unique identifier: NCT04298593.

Central retinal artery occlusion following transcatheter aortic valve implantation (TAVI) for aortic stenosis: a case report.

BACKGROUND: Transcatheter aortic valve implantation is the standard treatment for high-risk elderly patients suffering from symptomatic severe aortic stenosis. While this procedure is significantly less invasive compared to traditional methods, there are concerns regarding the potential risk of cerebrovascular accidents and ocular complications. We report a case of monocular central retinal artery occlusion that occurred following transcatheter aortic valve implantation due to aortic stenosis. The occurrence of central retinal artery occlusion post-transcatheter aortic valve implantation has not previously been reported. CASE PRESENTATION: A 78-year-old male presented with a sudden, painless loss of vision in the left eye immediately after undergoing transcatheter aortic valve implantation. Fundus examination revealed moderate optic disc edema, mild venous tortuosity and diffuse retinal pallor at the posterior pole, most marked in the perimacular region and extending along the major vascular arcades into the mid-peripheral retina, with a cherry-red spot at the fovea. Optical coherence tomography indicated signs of retinal ischemia. The patient was referred to the emergency department for further assessment. CONCLUSIONS: Although there is evidence of embolization occurring after TAVI, this is the first case of central retinal artery occlusion that has been reported. Our findings underscore the need for thorough pre-TAVI counseling, increased neurologist awareness of this complication, and prompt ophthalmologic evaluation in cases of sudden monocular visual loss.

Isolated secondary tricuspid regurgitation after left-sided valve surgery: impact on clinical outcomes.

BACKGROUND: Secondary tricuspid regurgitation (TR) often develops or persists following left-sided valve surgery. However, its impact on outcomes and the optimal timing of intervention is unclear. This study examined the association between isolated postoperative secondary TR and outcomes in patients with a history of mitral or aortic valve surgery. METHODS: This observational single-centre cohort study included patients with left-sided valve surgery and less than moderate preoperative TR who underwent follow-up echocardiography between 2002 and 2024. The presence of isolated postoperative secondary TR was evaluated in relation to clinical outcomes. The primary endpoint was a composite of all-cause death and heart failure hospitalisations (HFH). RESULTS: The cohort consisted of 2487 patients with a mean age of 68 years and a median follow-up time of 3 years. All-cause mortality and HFH increased with the grade of postoperative TR (p<0.001). Postoperative TR was associated with the composite endpoint independent of cardiovascular risk factors and baseline comorbidities (adjusted HR 1.29; 95% CI 1.18 to 1.41; p<0.001). The association between postoperative TR and the primary endpoint remained significant after adjustment for right ventricular (RV) remodelling and moderate mitral regurgitation (adjusted HR 1.40; 95% CI 1.28 to 1.53; p<0.001). An increase in TR by at least two grades from the preoperative assessment was observed in 12.5% of patients and was associated with the composite endpoint (p<0.001). Age, sex, myocardial infarction, coronary artery bypass grafting, atrial fibrillation and RV remodelling were factors associated with TR progression (p<0.01). CONCLUSIONS: In patients following left-sided valve surgery, isolated postoperative secondary TR is independently associated with mortality and HFH independent of RV size, function and baseline comorbidities. An increase in TR severity by at least two grades from the preoperative assessment is associated with adverse outcomes.

Concomitant acquired and inherited von Willebrand disease: A challenging bleeding disorder.

BACKGROUND: Inherited von Willebrand disease is the most common inherited bleeding disorder and is characterized by mucocutaneous bleeding resulting from impaired platelet adhesion and aggregation at sites of vascular injury. Acquired von Willebrand disease is an often-underrecognized bleeding disorder caused by structural or functional abnormalities of von Willebrand factor secondary to autoimmune, lymphoproliferative, myeloproliferative, plasma cell dyscrasias, malignancy, cardiovascular, or other systemic disorders. The coexistence of inherited and acquired von Willebrand disease should be suspected in patients with a previously stable bleeding phenotype who develop unexplained clinical worsening and requires a high index of clinical suspicion. This scenario presents a significant diagnostic challenge, as laboratory findings may be similar between inherited and acquired forms. CASE REPORT: 96-year-old woman with known type 2A von Willebrand disease and a previously mild bleeding phenotype who developed worsening bleeding due to acquired von Willebrand disease secondary to previously unrecognized severe aortic stenosis. Genetic sequencing identified a germline variant in exon 28 and an acquired variant in exon 31. Transcatheter aortic valve replacement resulted in rapid improvement of the bleeding phenotype and discontinuation of replacement therapy. CONCLUSION: This case underscores the importance of considering acquired von Willebrand disease in patients with inherited von Willebrand disease who present with new-onset or worsening bleeding symptoms, as early recognition enables targeted treatment of the underlying condition and may significantly improve clinical outcomes.

Prognostic impact of serum type IV collagen 7S after transcatheter aortic valve implantation.

Outcomes after transcatheter aortic valve implantation (TAVI) remain variable, and the impact of extracardiac dysfunction prior to the procedure has not been fully elucidated. Type IV collagen 7S (P4NP 7S) is a serum marker originally established in hepatic fibrosis and has been reported to reflect venous congestion and cardio-hepatic interaction in cardiovascular disease. We investigated whether preprocedural P4NP 7S predicts clinical outcomes following TAVI. This single-center prospective cohort comprised 398 consecutive patients with severe aortic stenosis who underwent TAVI between June 2019 and December 2024. Serum P4NP 7S levels were measured prior to the procedure, and patients were stratified into tertiles. The primary endpoint was a composite of all-cause death or heart failure (HF) hospitalization. During a median follow-up of 773 days, 82 primary events occurred. Higher tertiles of P4NP 7S were associated with congestion-related clinical profiles, and event rates increased progressively across tertiles (log-rank P < 0.001). In multivariable Cox proportional hazards models adjusting for potential confounders, elevated P4NP 7S remained independently associated with adverse outcomes (middle vs. lower tertile: hazard ratio [HR] 2.30, 95% confidence interval [CI] 1.15-4.61; upper vs. lower tertile: HR 2.90, 95% CI 1.48-5.65). When analyzed as a continuous variable, each 1-ng/mL increase in P4NP 7S was associated with a higher risk (HR 1.15, 95% CI 1.06-1.26). Preprocedural serum P4NP 7S independently predicted all-cause death or HF hospitalization after TAVI. Measurement of P4NP 7S may aid risk stratification and help identify patients who warrant closer post-TAVI follow-up.

Cost-effectiveness of transcatheter aortic valve implantation in older patients with aortic stenosis: a large-scale retrospective cohort study using an administrative claims database.

Effects of transcatheter aortic valve implantation (TAVI) on cost-effectiveness in older patients with aortic stenosis (AS) compared with medical therapy (MT) were not well scrutinized in the real-world settings. Patients with AS were extracted from an administrative claims database of late elderly patients aged ≥ 75 years in Japan from 2018 to 2021. The patients were divided into TAVI and MT groups, and all-cause death and medical costs were compared between the two groups. The effect of TAVI on mortality compared with MT and the incremental cost-effectiveness ratio (ICER) of the TAVI compared with MT were calculated in JPY/quality-adjusted life year (QALY). Of the 45,664 patients analyzed, 2,217 (4.9%) were in the TAVI group. Three-year mortality was 12.5% in the TAVI group and 22.5% in the MT group (P < 0.0001). Median (IQR) costs were 9,275,870 (7,761,600-11,654,645) JPY for TAVI and 2,364,740 (1,097,930-4,925,940) JPY for MT (P < 0.0001). The adjusted hazard ratio (95% confidence interval) for all-cause death in the TAVI group relative to the MT group was 0.61 (0.53-0.68). The ICER of the TAVI group compared with the MT group was 11,485,734 JPY/QALY. TAVI improved mortality than MT for 3 years. From the perspective of 3-year period, its cost-effectiveness should be considered in patients aged 75 years or elder.

CT-Guided Risk Stratification for Selective Femoral Protection Guidewire Use in Transfemoral TAVI.

BACKGROUND: Despite device improvement and systematic procedure planning based on multislice computed tomography (MSCT), vascular and bleeding complications remain common adverse events after transfemoral transcatheter aortic valve implantation (TF-TAVI). To date, the best way to conduct TF-TAVI procedure in order to reduce the occurrence and facilitate the treatment of vascular/bleeding complications is unknown. TF-TAVI streamlining includes to skip femoral protection strategies and might be the ideal solution for patients with low vascular risk. OBJECTIVES: To quantify the incidence and clinical impact of operative ilio-femoral vascular events after TF-TAVI and to identify MSCT-derived predictors that may inform selective use of femoral protection strategies. METHODS: We analyzed 960 consecutive patients undergoing TF-TAVI with high-quality preprocedural MSCT imaging of the operative aorto-iliofemoral axis. The primary endpoint was 30-day vascular events, defined as a composite of operative ilio-femoral access vascular complications (VARC-3) and/or need for balloon hemostasis. Complications related to the secondary access were adjudicated separately. Independent predictors were assessed using multivariable logistic regression. RESULTS: Vascular events occurred in 128 patients (13.3%), driven by operative access-site vascular (major or minor) complications (9.8%) and balloon hemostasis need (3.5%). Patients with vascular events were more often female and had smaller ilio-femoral lumen dimensions, higher sheath-to-artery ratio (STAR), and more extensive circumferential calcification. At multivariable analysis, independent predictors were female sex (OR 1.90; 95% CI 1.38-2.60; p<0.001), STAR >1 (OR 1.63; 95% CI 1.12-2.40; p=0.011), and calcification arc ≥90° across all three iliofemoral segments (common iliac, external iliac, and common femoral arteries) (OR 2.45; 95% CI 1.04-5.74; p=0.040). Vascular events were associated with higher 30-day mortality (4.7% vs 1.3%; p=0.022) and major bleeding (VARC-3 type 3: 3.1% vs 1.0%; p=0.040; type 4: 1.6% vs 0.1%; p=0.006). CONCLUSIONS: In conclusion, in contemporary TF-TAVI, approximately 1 in 8 patients experiences operative ilio-femoral vascular events requiring peripheral bail-out measures. A MSCT-derived "fragile access" profile (female sex, STAR >1, and diffuse circumferential ilio-femoral calcification) may help target protection strategies. CONDENSED ABSTRACT: In a large cohort of 960 TF-TAVI patients, operative ilio-femoral vascular events occurred in 13.3% and were associated with increased 30-day mortality and major bleeding. Patients with events had smaller ilio-femoral lumen dimensions, higher sheath-to-artery ratio (STAR), and more extensive circumferential calcification. Independent CT-guided predictors were female sex (OR 1.90), STAR >1 (OR 1.63), and calcification arc ≥90° across all three iliofemoral segments (OR 2.45). These findings support CT-based selection of femoral protection strategies, reserving ancillary access and bailout readiness for "fragile access" anatomy and reducing invasiveness when anatomy is favorable.

Comparative Effectiveness of Balloon-Expandable and Self-Expanding Valves in Small Aortic Annulus Transcatheter Aortic Valve Replacement: An Updated Meta-Analysis of Randomized and Propensity Score Matched Studies.

Patients with small aortic annuli (SAA) undergoing transcatheter aortic valve replacement (TAVR) are at increased risk of elevated transvalvular gradients and prosthesis-patient mismatch (PPM), making valve selection critical. We hypothesized that balloon-expandable valves (BEVs) and self-expandable valves (SEVs) differ in their clinical and hemodynamic outcomes in this population. We searched PubMed, Cochrane, ScienceDirect, and Google Scholar for studies published before May 2025. Randomized controlled trials (RCTs) and propensity score-matched (PSM) studies comparing BEVs and SEVs were included. Outcomes were pooled using mean differences (MD) or risk ratios (RR) with 95% confidence intervals (CIs). Analyses were performed in R (v4.4.2), and heterogeneity was assessed using the I² statistic. Fourteen studies, 2 RCTs, and 12 PSM studies met inclusion criteria. Compared to SEVs, BEVs were associated with a significantly lower indexed effective orifice area (MD: -0.18; 95% CI: -0.24 to -0.11; p < 0.01), higher mean transvalvular gradient (MD: 4.27; 95% CI: 3.07 to 5.47; p < 0.01), and increased risk of PPM (RR: 1.56; 95% CI: 1.14 to 2.13; p = 0.006) and severe PPM (RR: 2.66; 95% CI: 1.97 to 3.60; p < 0.001). BEVs were linked to lower rates of pacemaker implantation (RR: 0.64; 95% CI: 0.46 to 0.89; p = 0.008) and major bleeding (RR: 0.69; 95% CI: 0.50 to 0.96; p = 0.028). In SAA patients undergoing TAVR, BEVs show inferior hemodynamics but reduced need for pacemakers and bleeding risk. In conclusion, long-term prospective studies with contemporary devices are needed to clarify these tradeoffs.

Outcomes with transcatheter aortic valve replacement for aortic stenosis in rheumatoid arthritis: an observational study.

OBJECTIVE: To evaluate the short- and long-term clinical outcomes of transcatheter aortic valve replacement (TAVR) among participants with rheumatoid arthritis (RA) and aortic stenosis (AS) compared with those without RA, using real-world data from a large multicentre registry. METHODS: Using the TriNetX Registry, participants with AS undergoing TAVR with (RA+) vs without RA (RA-) were identified. Odds ratios (ORs) with 95% confidence intervals (CIs) estimated 30-day all-cause mortality, permanent pacemaker implantation, ischemic stroke, acute kidney injury, myocardial infarction, cardiogenic shock, major vascular complications, and major or life-threatening bleeding were evaluated. Five-year outcomes included all-cause mortality, ischemic stroke, MI, and all-cause hospitalization. Cox regression was used to estimate hazard ratios (HRs) with 95% CIs. RESULTS: 1,414 RA + (4.3%) and 39 004 RA- participants were eligible. After matching, 1,374 were included in each cohort. At 30 days, outcomes did not differ between RA+ and RA- groups; mortality was 2.0% vs 1.5% (OR 1.29; 95% CI 0.73-2.29), with no significant differences in other endpoints. Over 5 years, mortality was 23.8% vs 20.5% (OR 1.12; 95% CI 0.97-1.31), and stroke, MI, and hospitalization were similar; HRs were concordant with OR estimates. In sex-based analyses of RA patients, outcomes did not differ by sex. CONCLUSION: In this large observational study, TAVR was not associated with excess short- or long-term risk in patients with RA. These findings support TAVR as a safe therapeutic option in RA patients with aortic stenosis.

Long-Term Outcomes of Transcatheter Aortic Valve Replacement in Low-Flow Low-Gradient Aortic Stenosis: A Reconstructed Time-to-Event and Multivariate Meta-Analysis.

BACKGROUND: There are uncertainties regarding long-term outcomes of low-flow, low-gradient (LFLG) severe aortic stenosis (AS) following transcatheter aortic valve replacement (TAVR). This study investigates long-term outcomes of TAVR for high-gradient (HG), classical LFLG, and paradoxical LFLG AS. METHODS: We systematically searched PubMed, Embase, Scopus, and Cochrane Library databases until January 2025 for studies comparing HG, classical LFLG, and paradoxical LFLG AS outcomes following TAVR. The primary outcome was all-cause mortality, analyzed using reconstructed individual patient data meta-analysis. Secondary outcomes included cardiovascular mortality, heart failure hospitalization, acute kidney injury, bleeding events, stroke, myocardial infarction, permanent pacemaker implantation, and echocardiographic outcomes, analyzed using multivariate meta-analysis. RESULTS: We included 19 observational studies comprising 20 493 patients who underwent TAVR for severe AS. Time-to-event meta-analysis indicated a higher risk of 5-year all-cause mortality in patients with classical and paradoxical LFLG AS compared with HG AS (hazard ratio [HR], 1.92 [95% CI, 1.62-2.27] and HR, 1.20 [95% CI, 1.07-1.34], respectively). Multivariate meta-analysis indicated an increased risk of cardiovascular mortality in patients with LFLG versus HG AS (classical LFLG HR, 1.94 [95% CI, 1.74-2.16]; paradoxical LFLG HR, 1.40 [95% CI, 1.25-1.57]). Classical and paradoxical LFLG AS were also associated with a higher risk of heart failure hospitalization (HR, 4.12 [95% CI, 2.16-7.83]; HR, 1.80 [95% CI, 1.14-2.85], respectively) compared with HG AS. CONCLUSIONS: Classical and paradoxical LFLG AS were associated with higher all-cause and cardiovascular mortality following TAVR compared with HG AS. Future studies are needed to determine strategies to improve outcomes following TAVR in patients with LFLG AS.

The effect of chronic total occlusion on outcomes following transcatheter aortic valve implantation: a systematic review and meta-analysis.

AIM: The pre-procedural presence of chronic total occlusions (CTO) in patients undergoing transcatheter aortic valve implantation (TAVI) could be a significant predictor of outcomes. This meta-analysis aims to investigate whether CTO presence significantly alters outcomes in TAVI patients. METHODS: A systematic search was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. After study selection, a random effect meta-analysis was performed. RESULTS: Seven studies with a total of 15,162 patients undergoing TAVI were included. There was no significant difference regarding in-hospital [Relative Risk (RR): 1.13; 95% Confidence Interval (95% CI): 0.82-1.55] and 1-year all-cause mortality (RR: 1.58; 95% CI: 0.71-3.50). Patients with CTO exhibited significantly increased rates of myocardial infarction (RR: 1.27, 95% CI: 1.07-1.51) and reduced rates of new pacemaker implantation (RR: 0.88, 95% CI: 0.79-0.98). No differences were found in cardiogenic shock (RR: 1.18, 95% CI: 0.97-1.44), acute kidney injury (RR: 1.06, 95% CI: 0.88-1.28), vascular complications (RR: 1.10, 95% CI: 0.91-1.33), or bleeding (RR: 1.01, 95% CI: 0.89-1.14). CONCLUSION: In TAVI patients, pre-procedural unrevascularized CTO presence is not related to short- or mid-term increased mortality. Further studies are needed to identify predictors of adverse events and phenotypes benefiting from revascularization.

Pacemaker recovery after permanent pacemaker implantation post-transcatheter aortic valve implantation: A sub-study of the LANDMARK trial.

BACKGROUND: Conduction system disturbances resulting in permanent pacemaker implantation (PPI) are common complications after transcatheter aortic valve implantation (TAVI). In some patients, there is delayed recovery of the conduction system post-procedure. This study aims to report the incidence and predictors of ventricular pacing (VP) rate≦1% at 1 year after TAVI. METHODS: This is a post-hoc sub-study of the LANDMARK multicentre trial, which randomized 768 patients in a 2:1:1 ratio to the Myval (n = 384) transcatheter heart valve (THV) series or contemporary THVs (Sapien [n = 192] and Evolut [n = 192] series) for the treatment of severe aortic stenosis. Overall, 122 (15.9%) patients underwent PPI within 30 days after TAVI, and 1-year pacemaker follow-up data were retrospectively collected in 99 patients. Pacemaker recovery (PMR) was defined as a VP rate ≦1% at follow-up. RESULTS: PMR occurred in 18% (18/99) of patients. The PMR group was younger than the non-PMR group (78.6 ± 3.0 vs 81.1 ± 5.1 years, p = 0.045). Implantation depth under the non-coronary cusp did not differ between groups (5.7 ± 3.5 vs 5.8 ± 2.8 mm, p = 0.94). There were no significant differences in PMR rates based on THV type: Myval 25% (11/44), Sapien 19% (5/27), and Evolut 7% (2/28) (p = 0.16). In multivariable logistic regression, atrial fibrillation was associated with lower odds of PMR (odds ratio 0.09, 95% confidence interval 0.00-0.77, p = 0.02. CONCLUSIONS: At 1 year, conduction system recovery (VP≦1%) was observed in 18% of patients who underwent PPI after TAVI, with no significant difference among the Myval, Sapien and Evolut series. Atrial fibrillation was associated with lower odds of recovery.

Long-Term Outcomes After Radiofrequency Catheter Ablation of Idiopathic Outflow Tract Premature Ventricular Contractions.

Background and Objectives: Idiopathic ventricular arrhythmias commonly occur in patients without structural heart disease and most often present as premature ventricular contractions (PVCs). Although generally considered benign, a high PVC burden may cause symptoms, reduce quality of life, and lead to reversible PVC-induced cardiomyopathy. This study aimed to evaluate long-term outcomes after radiofrequency catheter ablation of idiopathic outflow tract PVCs. Materials and Methods: This single-center retrospective study included 101 patients with idiopathic PVCs who underwent radiofrequency catheter ablation. PVC burden and clinical outcomes were assessed at baseline and during follow-up at 3 months, 12 months, and 5 years. Procedural success, predictors of success, and changes in antiarrhythmic drug therapy were analyzed. Results: During follow-up, a marked reduction in PVC burden was observed compared with baseline values. The median PVC burden decreased from 21.89% at baseline to 0.79% at 3 months, 0.23% at 12 months, and 0.09% at the 5-year follow-up after ablation. Acute procedural success was achieved in 88.1% of patients. Long-term success at 5 years was observed in 80.2% of patients. The use of antiarrhythmic drugs decreased during follow-up. Left ventricular ejection fraction remained stable, with no significant difference between baseline and 5-year values. Monomorphic PVC morphology and procedural success at 12 months were identified as independent predictors of long-term success. Conclusions: Radiofrequency catheter ablation provides effective and sustained reduction in PVC burden in patients with idiopathic outflow tract PVCs, with high acute success rates, durable long-term outcomes, and reduced reliance on antiarrhythmic drug therapy.

Gradients after transcatheter aortic valve replacements are impacted by both body mass index and valve size: a retrospective cohort study.

BACKGROUND: Obesity is a common comorbidity among patients undergoing transcatheter aortic valve replacement (TAVR) and may influence valve hemodynamics. The impact of body mass index (BMI) and valve size on post-TAVR echo-derived gradients is not fully understood; however, it is clinically important for optimizing outcomes, particularly in high-BMI populations, where procedural success may be affected. This study aims to determine the relationship between BMI and post-procedural gradients. METHODS: This retrospective cohort study was conducted at a single large academic medical center to study patients who underwent balloon-expandable TAVR between 2021 and 2023. Patients had pre-procedural computed tomography (CT) and echocardiographic data and completed a 30-day follow-up echocardiogram. Patients were stratified based on BMI (<30 vs. ≥30 kg/m2) and valve size (20/23 vs. 26/29 mm). Mean 30-day echocardiogram gradients, measured with Doppler echocardiography, were compared across groups. A total of 180 patients were identified and stratified into 4 groups: high-BMI small valve (n=26); high-BMI large valve (n=33); low-BMI small valve (n=47); and low-BMI large valve (n=74). Both univariate analysis and multivariate analysis compared different groups and the impacts of individual variables on mean 30-day echocardiogram gradients. RESULTS: The groups were similar in demographics and clinical characteristics, except for age, which was significantly lower in the high BMI group (P<0.001). Low-BMI patients with large valves had significantly lower gradients than high-BMI patients with small valves (P=0.002). Among high-BMI patients, small valves were associated with significantly higher gradients than large valves (P=0.009). In low-BMI patients, gradients were similar regardless of valve size (P=0.16). In small valve patients, there was a trend for higher gradients in high versus low BMI (P=0.056). CONCLUSIONS: Both BMI and valve size impact 30-day echo-derived gradients after balloon-expandable TAVR. High BMI and small valves are associated with higher gradients. With larger valves, the impact of BMI on valve gradient is attenuated. Additionally, for low-BMI patients, valve size has less impact on gradients. This study suggests that BMI is a crucial factor impacting gradients, and suggests that future research into the role of weight loss in TAVR treatment should be conducted.

Cerebral Embolic Protection Devices for Transcatheter Aortic Valve Replacement: A Meta-Analysis and Trial Sequential Analysis.

BACKGROUND: Transcatheter aortic valve replacement (TAVR) is associated with a periprocedural stroke risk due to embolic debris. The efficacy and safety of cerebral embolic protection devices (CEPDs) remain uncertain, with conflicting results between trials. We performed a meta-analysis of randomized controlled trials (RCTs) of current-generation CEPDs for TAVR. METHODS: Electronic databases were searched for RCTs comparing clinical outcomes with routine CEPD use vs. no CEPD use. Outcomes of interest included any stroke, disabling stroke, and all-cause mortality. Risk ratios (RR) or mean differences (MD) with 95% confidence intervals (CIs) were pooled using random-effects models. The analysis was complemented by meta-regression and trial sequential analyses. RESULTS: The meta-analysis included 8 RCTs (5 filter-based and 3 shield-based) with 11,597 patients. CEPD use was not associated with a lower incidence of any stroke (RR 0.92; 95%CI 0.75-1.14), disabling stroke (RR 0.80; 95%CI 0.55-1.15), new magnetic resonance imaging-detected lesions (RR 1.00; 95%CI 0.93-1.07), or all-cause mortality (RR 1.04; 95%CI 0.71-1.51). Trial sequential analysis provided conclusive meta-analytic evidence, affirmed the absence of CEPD benefit. Meta‑regression showed no significant association between stroke risk and patient-level covariates, including age, sex, or the presence of diabetes, prior stroke, or atrial fibrillation (all p>0.05). CONCLUSIONS: Current generation CEPD devices during TAVR did not significantly reduce the risk of any stroke, disabling stroke, or all-cause mortality. TSA indicates that, at least with available data, cumulative evidence appears sufficient to question the predefined benefit thresholds for existing systems. These findings suggest the lack of routine use of current-generation CEPD in TAVR.

Piezo1-mediated mechanohydraulic control of cell volume drives cardiac morphogenesis.

Organ morphogenesis is driven by physical forces, yet how mechanical stimuli pattern tissue shape and guide developmental programs remains poorly understood. In zebrafish, endocardial cells (EdCs) within the heart valve-forming region undergo marked volume reduction during early morphogenesis. Here, we uncover a hydraulics-based mechanism by which mechanical forces control EdC volume to direct cardiac development. We show that the mechanosensitive ion channel Piezo1 acts with the calcium-binding protein calmodulin (CaM) and the aquaporin Aqp8a.1 water channel to orchestrate EdC shrinkage. We find that Aqp8a.1 mediates cell volume loss by incorporating into the plasma membrane in response to mechanical stimulation, promoting heart looping and valve formation. Mechanistically, Piezo1 governs Aqp8a.1 through a dual mechanism. First, Piezo1 and CaM drive Aqp8a.1 plasma membrane incorporation, enabling rapid cell volume adjustments. Second, Piezo1 suppresses aqp8a.1 transcription via Notch1b signaling to prevent excessive shrinkage. Together, these findings reveal that mechanotransduction can dictate organ formation through dynamic cell volume regulation, uncovering a fundamental principle of morphogenesis.

Post procedural changes in frontal QRS-T angle predict electrical disturbances after self-expandable transcatheter aortic valve implantation.

BACKGROUND: Electrical disturbances are common complications after transcatheter aortic valve implantation (TAVI), particularly with self-expandable valves. Improved noninvasive markers are needed to identify patients at increased risk. The frontal QRS-T angle reflects ventricular electrical heterogeneity, but the prognostic value of its post-procedural change remains unclear. METHODS: In this single-center retrospective observational cohort study, consecutive patients undergoing self-expandable TAVI were analyzed. ΔQRS-T angle was defined as the difference between post and pre-procedural frontal QRS-T angles. The primary endpoint was the occurrence of electrical disturbances within 24 h, including new-onset bundle branch block, QRS prolongation >20 ms, high-grade atrioventricular block, or permanent pacemaker implantation (PPM). Logistic regression and receiver operating characteristic (ROC) analyses were performed. RESULTS: A total of 135 patients were included, of whom 66 (48.9%) developed electrical disturbances. ΔQRS-T angle was significantly greater in patients with electrical disturbances (median 24° vs. 7°, p = 0.01). In multivariable analysis, ΔQRS-T angle independently associated with electrical disturbances (odds ratio [OR] 1.02 per degree increase, 95% confidence interval [CI] 1.01-1.03, p = 0.006) and PPM implantation (OR 1.016 per degree increase, 95% CI 1.01-1.07, p = 0.02). ROC analysis demonstrated modest discrimination (area under the curve 0.619, 95% CI 0.519-0.719). A cut-off value of 46.5° yielded 45.5% sensitivity and 87.0% specificity. CONCLUSIONS: Post-procedural change in frontal QRS-T angle is independently associated with early electrical disturbances and pacemaker requirement after self-expandable TAVI. ΔQRS-T angle may provide complementary risk information but requires external validation before routine clinical application.

Distinct Purkinje Electrogram Phenotypes at Ventricular Fibrillation Trigger Sites in Idiopathic and Structural Heart Disease.

BACKGROUND: Purkinje fibers are established triggers of ventricular fibrillation (VF). In structural heart disease, septal fibrosis and border-zone remodeling may alter Purkinje electrograms at VF-triggering sites; however, classical electrogram criteria derived from structurally normal hearts have not been validated in scarred substrate. OBJECTIVE: To compare Purkinje electrogram morphology at VF-triggering sites in patients with idiopathic versus structural heart disease undergoing catheter ablation. METHODS: Thirty-seven consecutive patients underwent Purkinje-targeted VF ablation (12 idiopathic, 25 structural). Bipolar electrograms at mapped triggering sites were quantitatively analyzed in 12 patients with discrete trigger localization and high-quality recordings (4 idiopathic, 8 structural). Abnormal Purkinje electrograms were defined as prolonged (>25 ms), multicomponent, or fragmented signals. RESULTS: Abnormal Purkinje-like electrograms were identified almost exclusively in structural patients (7/8 [87.5%] vs. 0/4 idiopathic; p=0.01). Structural VF demonstrated greater electrogram complexity, with more multiphasic components (3.0±1.1 vs. 1.0±0.0; p<0.001), longer Purkinje potential duration (37.9±8.3 vs. 18.0±4.0 ms; p<0.001), and longer Purkinje-ventricular intervals (50.9±13.6 vs. 18.0±4.0 ms; p<0.001). In two structural patients without voltage-defined scar, CT identified septal substrate, with P-V intervals of 28 and 35 ms-intermediate between idiopathic and scar-positive patients. Twelve-month VF-free survival was similar between groups (83.3% vs. 80.0%; p=0.79). CONCLUSION: Purkinje electrogram morphology at VF-triggering sites differs between idiopathic and structural heart disease and is consistent with differences at the Purkinje-myocardial interface. These findings suggest that electrogram phenotype may inform selection of focal versus substrate-based ablation strategies, supporting a tailored approach that balances arrhythmia control with conduction system preservation.

Acute Hypoxemic Respiratory Failure Following Mitral Transcatheter Edge-to-Edge Repair: The Role of Aortic Stenosis.

BACKGROUND: The coexistence of severe mitral regurgitation (MR) and mild-to-moderate aortic stenosis (AS) presents diagnostic and therapeutic challenges. Limited data exists on outcomes following mitral transcatheter edge-to-edge repair (M-TEER) therapy in this patient population. AIMS: This study is aimed to evaluate clinical outcomes following M-TEER in patients with mild-to-modearte AS compared with those without aortic stenosis. METHODS: A single-center retrospective study was conducted on 238 patients who underwent M-TEER therapy between January 2014 and December 2024. Patients with severe AS, cardiogenic shock, and failed or aborted cases were excluded. We compared patients with mild-to-moderate AS (n = 30) to those without AS (n = 208). PRIMARY OUTCOME: Acute hypoxemic respiratory failure (AHRF) within 24 h (SpO2 ≤ 90% ≥ 30 min or need for O2/NIV/IMV, adjudicated as cardiogenic). SECONDARY OUTCOMES: Post-procedural in-hospital mortality, acute kidney injury, hospital length of stay (LOS), 30-day rate of heart failure hospitalization (HFH), and 30-day rate of all-cause readmission. Multivariable logistic regression was used to identify independent predictors of AHRF, hospital LOS, and 30-day HFH. RESULTS: Following M-TEER, the mild-to-moderate AS group experienced significantly higher rates of AHRF (16.7% vs. 3.8%, p = 0.0142; adjusted OR 4.38, 95% CI 1.36-14.61, p = 0.014). Within the parsimonious adjusted model, AS remained independently associated with AHRF, whereas the other included covariates were not. There was no significant difference in the 30-day rate of all-cause readmission, 30-day rate of HFH, AKI, LOS, or in-hospital mortality between groups. CONCLUSION: In patients undergoing M-TEER, the presence of mild-to-moderate AS is independently associated with an increased risk of early post-procedural AHRF, without differences in other short-term clinical outcomes. Given the single-center retrospective design and the limited number of clinical events, these findings should be considered hypothesis-generating and warrant validation in larger, prospective, multicenter studies.

Early Echocardiographic Changes Following Transcatheter Aortic Valve Implantation: A Comparative Analysis of Different Transcatheter Aortic Valve Systems.

BACKGROUND: Transcatheter aortic valve implantation (TAVI) is a viable alternative therapeutic approach for patients with severe aortic stenosis (AS), following technological innovations in transcatheter aortic valve systems and advances in clinical expertise, which aim to optimize valve hemodynamics. In this study, we aimed to compare early hemodynamic changes in different types of TAVI valves via two-dimensional echocardiography. METHODS: This retrospective observational study examined patients with severe AS who underwent transfemoral TAVI. Patients were classified according to expansion mechanism (self-expanding valves (SEVs) or balloon-expandable valves (BEVs)) and leaflet position relative to the annulus (supra-annular valves (SAVs) or intra-annular valves (IAVs)). The implanted prostheses were Edwards SAPIEN XT valves (ESV, Edwards Lifesciences, Irvine, CA, USA), Medtronic valves (Core Valve-MCV and Evolut R, Medtronic, Minneapolis, MN, USA), Portico valves (St. Jude Medical, Saint Paul, MN, USA), and Myval valves (Meril Life Sciences, Vapi, India). Baseline two-dimensional transthoracic echocardiography (TTE) datasets were compared with post-TAVI measures obtained before discharge. RESULTS: In total (n = 332), 275 (82.8%) patients were treated with SEVs, and 57 (17.2%) were treated with BEVs. In terms of leaflet position, 249 (75%) patients were treated with SAVs, and the remaining 83 (25%) patients were treated with IAVs. Transaortic gradients were comparable between patients treated with SEVs and BEVs. However, patients treated with IAVs exhibited significantly higher aortic maximum gradients (16 [13-21] mmHg vs. 14 [10-20] mmHg, p = 0.019) and mean gradients (9 [7-11] mmHg vs. 8 [5-10] mmHg, p = 0.014) compared to those receiving SAVs. Post-TAVI gradients were also compared based on each TAVI device. Although post-TAVI aortic maximum gradient was comparable among TAVI devices (p = 0.080), aortic mean gradient was significantly different among the valves (p = 0.006). Post hoc analyses demonstrated that the post-TAVI mean gradient was significantly lower in Medtronic CoreValve compared to the Myval (p = 0.013) and Portico (p = 0.030). No significant differences were observed in the frequency of perivalvular leak between the valve groups. CONCLUSIONS: We found that post-TAVI transaortic gradients of SEVs and BEVs were comparable; however, SAVs were associated with lower transaortic gradients than those of the IAVs. In addition, the frequency of ≥moderate PVL was comparable between the valve groups.

Steady-state regional cerebral oxygen saturation integrates multidimensional periprocedural factors and predicts long-term mortality after transcatheter aortic valve implantation.

PURPOSE: Predicting long-term outcomes after transcatheter aortic valve implantation (TAVI) remains challenging. Recent studies have indicated the potential of intraoperative cerebral regional oxygen saturation (rScO2) in estimating long-term outcomes after cardiac surgery. This study aimed to investigate the association between long-term outcomes after TAVI and pre-operative, procedural, and anesthesia-related factors, including rScO2. METHODS: We conducted a retrospective observational cohort study of 301 consecutive patients who underwent TAVI under monitored anesthesia care at our institution between April 2017 and March 2019. The associations between pre-operative, procedural, and anesthesia-related factors and the 1- and 3-year mortality rates were investigated. RESULTS: Of the 301 patients analyzed, 298 were followed-up for 3 years. The all-cause mortality rates at 1 and 3 years were 6.7% and 20.5%, respectively. Multivariate Cox proportional hazards regression analysis revealed that pre-operative lung vital capacity and post-anesthetic rScO2 were independent predictors of both 1- and 3-year mortality. Receiver operating characteristic analysis indicated that the cutoff values of post-anesthetic rScO2 for predicting 1- and 3-year mortality were 55.25 and 57.75, respectively. Multivariate linear regression analysis showed that pre-operative hemoglobin concentration, estimated glomerular filtration rate, serum brain natriuretic hormone level, hypotension at the end of the procedure, and duration of anesthesia were associated with post-anesthetic rScO2. CONCLUSION: Post-anesthetic rScO2 was significantly associated with long-term mortality after TAVI.

Impact of Virtual Reality on Transcatheter Aortic Valve Implantation: A Prospective Randomized Controlled Trial.

BACKGROUND: Accurate preprocedural planning is crucial for a successful transcatheter aortic valve implantation to ensure patient safety and valve longevity. Through 3-dimensional visualization, virtual reality (VR) offers the potential to enhance this process. The study investigated whether the inclusion of VR in preprocedural planning can improve the procedural preparation, impact intraprocedural parameters, and improve short-term patient outcomes. METHODS: This randomized, prospective, controlled study included 140 patients who underwent transcatheter aortic valve implantation at the University Hospital Duesseldorf between April and August 2024. In the control group, preprocedural planning was based on multislice computed tomography data using 3mensio software, while in the intervention group, it was supplemented with VR software. In addition, interventionalists assessed both tools via a structured questionnaire. RESULTS: The evaluation did not reveal any relevant differences in patient characteristics. VR was superior to 3mensio software with respect to the 3-dimensional understanding (P<0.001). Similarly, depth perception, visualization of atherosclerotic plaques, and iliofemoral tortuosity were better in the VR group. Both methods were found to be useful and helpful in preparing for the procedure. There were no significant differences in procedural data between the 2 groups. However, the VR group had a lower rate of bleeding at the access site (P<0.05). There was no significant difference in the length of hospital stay or postprocedural transthoracic echocardiography data evaluations. CONCLUSIONS: The data show that virtual reality visualization can optimize preparation for the procedure by improving the 3-dimensional understanding of the aortic valve and adjacent structures. The detailed visualization of the access routes can lead to a reduction in periprocedural complications.

Noncoaxial Transcatheter Aortic Valve Deployment Creates Cusp-Specific Thrombogenic Microenvironments Through Altered Sinus Hemodynamics.

BACKGROUND: Transcatheter aortic valve replacement has transformed the management of aortic stenosis; however, adverse outcomes such as leaflet thrombosis and hypoattenuating leaflet thickening remain clinically significant concerns. Flow disturbances resulting from valve canting may alter local hemodynamics and promote thrombogenic conditions. We investigated how modest transcatheter heart valve canting alters cusp-specific sinus flow and washout and promotes localized thrombogenic microenvironments associated with leaflet surface thrombus formation using particle image velocimetry, a physiologic blood loop, and tissue analysis. METHODS: A patient-derived aortic root model was used to evaluate the hemodynamic and thrombogenic effects of THV canting at -10° (anti-curvature), 0° (neutral), and +10° (along-curvature). High-resolution particle image velocimetry quantified sinus flow fields and washout characteristics, and complementary whole-blood loop experiments enabled histologic assessment of leaflet-associated thrombus formation. RESULTS: Canting redistributed systolic jet orientation and sinus recirculation in a direction-dependent manner while preserving global hemodynamic measurements. The most spatially constrained cusp showed the largest increase in stasis and the slowest washout. In the right coronary cusp, anti-curvature canting increased the fraction of sinus area with velocity magnitude <0.05 m/s to 92% versus 43% in neutral and 10% in along-curvature deployments, and prolonged neo-sinus (T 90 ) washout to 4.7 cycles versus 2.9 and 1.8 cycles, respectively. Histology localized surface-adherent platelet/fibrin thrombus to these poorly washed regions, most prominently on the right coronary cusp leaflet in anti-curvature deployments. Left and noncoronary cusp responses shifted with tilt direction, indicating redistribution rather than uniform worsening of thrombogenic conditions. CONCLUSIONS: Even modest noncoaxial deployment is sufficient to create sinus-resolved throm-bogenic microenvironments that are not captured by global gradient or effective orifice area. Deployment configuration is therefore a modifiable determinant of post-TAVR leaflet throm-bosis risk and may contribute to HALT.

Neural Network-Based Prediction of Residual Paravalvular Leak in Bicuspid Aortic Valve TAVI Using CT-Derived Anatomical Features.

Background/Objectives: Transcatheter aortic valve implantation (TAVI) in patients with bicuspid aortic valve (BAV) remains associated with higher rates of residual paravalvular leak (PVL), which confers a two-fold increase in mortality. Despite procedural optimization including balloon post-dilatation, a subset of patients exhibit residual ≥moderate PVL. Pre-procedural identification of these patients could guide procedural planning. Methods: We retrospectively analyzed 402 BAV patients who underwent TAVI with self-expanding valves and balloon post-dilatation between January 2016 and June 2024. A multi-modal deep learning model (Model B) was developed, integrating a 3D ResNet encoder for computed tomography (CT) imaging features with a multilayer perceptron (MLP) for clinical variables, fused via a cross-attention mechanism. Its performance was compared against a conventional model (Model A) combining clinical variables with manually derived CT measurements. Both models were evaluated on identical test folds using 5-fold stratified cross-validation. Results: Of 402 patients, 36 (9.0%) had residual ≥moderate PVL, associated with significantly larger aortic root dimensions at all anatomical levels and greater aortic valve calcification volume (median 887.6 vs. 559.2 mm3; p = 0.004). Model A achieved a mean AUC of 0.694 (95% CI: 0.596-0.792). Model B achieved a mean AUC of 0.822 (95% CI: 0.680-0.964), with a specificity of 0.971, accuracy of 0.881, and PPV of 0.860, while sensitivity was 0.429, reflecting the limited number of outcome events in this cohort. Conclusions: A multi-modal deep learning model integrating expert-segmented CT imaging with clinical variables demonstrated significantly improved discrimination over the conventional approach in this internal cohort for predicting residual PVL in BAV-TAVI, supporting the integration of segmentation-guided deep learning into pre-procedural TAVI planning. However, given the modest number of outcome events, external validation is required to confirm the generalizability of these findings.

Impact of Sex Differences on Long-Term Survival Following TAVI in Patients With Aortic Stenosis: Insights From the TAVI-NOR Study.

BACKGROUND: The incidence of aortic stenosis (AS) in the older adult population in Western countries is increasing. When left untreated, AS progresses to clinical heart failure, reduced quality of life and functional capacity, and ultimately death. We aimed to assess sex differences in the long-term survival benefits of transcatheter aortic valve implantation (TAVI) in patients with severe AS. METHOD: A total of 600 consecutive patients with AS who underwent TAVI were included. Clinical and echocardiographic data were analysed. Propensity score matching was performed to assess the impact of sex on the survival benefit following TAVI, yielding 213 men and women with similar baseline characteristics. RESULTS: The mean age in the total population was 80.8±6.5 years. Women (49.3%) were older (82.2±5.3 vs 79.5±7.3 years; p<0.001), had more severe AS, higher prevalence of hypertension and basal septal hypertrophy, and higher left ventricular ejection fraction (LVEF) than men. By contrast, the prevalence of diabetes mellitus, cardiovascular disease, overall abnormal electrocardiogram, and atrial fibrillation was higher in men. During a mean follow-up of 59±24 months for men and 66±25 months for women, a total of 279 deaths occurred (125 in women and 154 in men; p=0.039). There was no difference in mortality at 1 and 2 years. The most pronounced benefit was observed at 3-year follow-up, with survival estimates of 92% for women and 84% for men (p=0.006). In a multivariable Cox regression analysis of the propensity-matched cohort, long-term event-free survival was significantly higher among women than men (hazard ratio 0.66; 95% confidence interval 0.49-0.88; p=0.004). CONCLUSIONS: At presentation, women were older, had a higher burden of hypertensive heart disease, more often exhibited concentric hypertrophy with preserved LVEF, and less frequently had atrial fibrillation compared with men. Women had better long-term survival following TAVI, with the most pronounced survival benefit observed at 3 years.

Pre-Existing and New-Onset Atrial Fibrillation in Patients Undergoing Transcatheter Aortic Valve Implantation.

BACKGROUND: Atrial fibrillation (AF) is a frequent comorbidity in patients with severe aortic valve stenosis undergoing transcatheter aortic valve implantation (TAVI). In addition, new-onset AF can occur after TAVI. However, data on how AF affects outcomes in patients undergoing TAVI remain conflicting. AIMS: To assess clinical outcomes in patients with severe aortic valve stenosis with AF who undergo TAVI in a large real-world global cohort. METHODS: The CENTER2-study includes 25,771 patients that underwent TAVI between 2007 and 2022. The database consists of patient-level pooled data from 10 clinical studies. Objectives were rates of new-onset AF ≤ 30 days, and differences in mortality and stroke according to AF status. RESULTS: A total of 23,320 patients were included in the current analysis (56.1% female; mean age 81.5 ± 6.7 years). Pre-existing AF was present in 28.2% (n = 6579) of patients. Mortality rates after TAVI were higher in patients with pre-existing AF (19.0% vs. 14.2%, adjusted HR: 1.39, 95% CI: 1.26-1.53, p < 0.001). Strokes at Day 3-30 after TAVI were more frequent in patients with pre-existing AF (1.6% vs. 1.1%, p = 0.004). New-onset AF occurred in 6.2% (n = 681) of patients without pre-existing AF. Mortality rates after TAVI were higher in patients with new-onset AF (adjusted HR 1.75, 95% CI 1.24-2.49, p = 0.002). One-year stroke was more frequently observed in patients with new-onset AF after exclusion of acute periprocedural stroke (6.1% vs. 3.4%, p = 0.04). Major bleeding was also more frequent in patients with new-onset AF (12.0% vs. 6.7%, p < 0.001). CONCLUSIONS: Patients with pre-existing or new-onset AF had higher mortality compared with patients without AF undergoing transfemoral TAVI. After the acute postprocedural period, 1-year stroke rates were higher in patients with new-onset AF. TRIAL REGISTRATION: ClinicalTrials.gov. Unique identifier NCT03588247.

Cardiovascular Outcomes with GLP-1 Receptor Agonists in Patients with Diabetes or Obesity Undergoing Transcatheter Aortic Valve Replacement.

BACKGROUND: Patients undergoing transcatheter aortic valve replacement (TAVR) commonly have comorbid type 2 diabetes mellitus or obesity, both independently linked to adverse cardiovascular outcomes. GLP-1 receptor agonists (GLP-1 RAs) have shown cardiovascular benefits in these high-risk groups, however, their utility in patients undergoing TAVR remains understudied. METHODS: We conducted a retrospective cohort study using the TriNetX database (2020-2025) to identify adults with type 2 diabetes mellitus or obesity undergoing TAVR. Patients were categorized as GLP-1 RA users or non-users and matched using 1:1 propensity score matching. The primary outcome was major adverse cardiovascular events (MACE), defined as a composite of all-cause mortality, acute myocardial infarction, stroke, and heart failure exacerbation. Secondary outcomes included individual components and new-onset atrial fibrillation/flutter. RESULTS: After matching, 1,708 patients were included in each cohort. GLP-1 RA users were associated with significantly lower risks of the MACE ([Hazard Ratio] HR 0.63; 95% [Confidence Interval] CI 0.57-0.70; p < 0.001), all-cause mortality (HR 0.61; 95% CI 0.48-0.78; p < 0.001), acute myocardial infarction (HR 0.71; 95% CI 0.57-0.89; p = 0.002), stroke (HR 0.74; 95% CI 0.59-0.94; p = 0.011), heart failure exacerbation (HR 0.38; 95% CI 0.32-0.44; p < 0.001), and new-onset atrial fibrillation/flutter (HR 0.60; 95% CI 0.44-0.84; p = 0.002) compared with non-users. Directionally consistent results were observed across subgroup analyses for the diabetes-only and obesity-only subgroups. CONCLUSION: Among adults with diabetes mellitus or obesity undergoing TAVR, GLP-1 RA use was associated with significantly lower risks of several outcomes.

Determinants of Recurrence After Epicardial Ventricular Tachycardia Ablation in Structural Heart Disease.

BACKGROUND: Epicardial catheter ablation is an established treatment for ventricular tachycardia (VT) in patients with structural heart disease (SHD); however, VT recurrence remains frequent, particularly in advanced cardiomyopathy. OBJECTIVE: To identify clinical and electrophysiological determinants of VT recurrence following epicardial VT ablation in SHD. METHODS: Seventy-four patients with SHD undergoing epicardial VT ablation were included. Acute procedural outcomes, VT recurrence, and adverse clinical events were assessed. RESULTS: Nonischaemic cardiomyopathy was the predominant etiology. Epicardial scar predominantly involved basal-lateral left ventricular regions with periannular and outflow tract extension. Acute procedural non-inducibility was achieved in 49 patients (66%), while VT recurrence occurred in 37 patients (50%) during follow-up of 17 months. In cause-specific Cox analysis, electrical storm (HR 3.130, 95% CI 1.421-6.893; p=0.005), longer VT cycle length (HR 2.835, 95% CI 1.211-6.638; p=0.016) and higher body mass index (BMI, HR 2.918, 95% CI 1.365-6.236; p=0.006) were independently associated with VT recurrence. During follow-up, 7 patients died, 10 underwent heart transplantation, and 2 required ventricular assist device implantation. CONCLUSION: Combined endocardial and epicardial VT ablation in advanced SHD was associated with moderate acute success, while VT recurrence remained common during follow-up. Electrical storm, longer VT cycle length, and higher BMI were independently associated with an increased risk of recurrence.

RedoTAVR coronary obstruction risk in small annuli: A post-TAVR CT study.

INTRODUCTION: Redo-transcatheter aortic valve replacement (redoTAVR) is increasingly relevant as younger patients undergo TAVR. Patients with small annuli may present anatomical constraints. METHODS: This study evaluated predicted coronary obstruction (CO) risk in case of redoTAVR in small versus non-small annuli using post-TAVR computed tomography (CT) in patients treated by supra-annular self-expanding valves (SEVs) or balloon-expandable valves (BEVs). 167 post-TAVR CT scans were analyzed. Patients were stratified into small annuli (≤430 ​mm2) and non-small annuli groups (>430 ​mm2). Risk plane for redoTAVR was assessed at node 4, 5 and 6 for SEVs and at the transcatheter heart valve (THV) outflow for BEVs. The minimal valve-to-coronary (VTC) and valve-to-aorta (VTA) distances were measured from the THV to the left main stem (LM)/right coronary artery (RCA) ostia and from the THV to the aorta above the LM/RCA respectively. High CO risk was defined as VTC <4 ​mm or VTA <2 ​mm when the coronary ostium lay below the risk plane. RESULTS: In small annuli, SEVs were associated with increased predicted CO risk after redoTAVR compared to BEVs, considering risk plane at node 6 (OR ​= ​15.52, p ​< ​0.001) or node 5 (OR ​= ​3.13, p ​= ​0.03), while not at node 4. In non-small annuli, SEVs did not increase predicted CO risk versus BEVs. CONCLUSION: Predicted CO risk at redoTAVR in small annuli depends on index valve type and redo implantation height. Our findings support accurate index-procedure planning and meticulous planning and execution of redoTAVR, particularly in small annuli.

Surfactant replacement therapy in preterm infants with congenital heart disease: Physiological concepts and therapeutic considerations.

A prevalence rate of 8.8/1000 live-births for congenital heart disease has been reported. The clinical outlook of these infants is dependent on transition from intra-uterine life to postnatal life. Preterm infants are also commonly administered surfactant to manage respiratory distress syndrome. This physiology-based narrative describes optimal oxygen saturation, mechanical ventilation practices and circulatory imbalances that might happen after surfactant administration in preterm infants with congenital heart disease. Clinicians may consider higher oxygen requirement thresholds for surfactant therapy in this select cohort, in comparison to infants without congenital heart disease. The interplay between surfactant deficiency, surfactant replacement therapy, and the unique interaction with underlying congenital heart disease represents a knowledge gap. This perspectives article discusses the haemodynamic vulnerability of preterm infants and discusses the circulatory impact of surfactant in premature infants without and with structural heart disease. We provide physiology-based suggestions for duct-dependent lesions, parallel circulations and other structural heart disease.

TAVI in young patients with bicuspid aortic valve stenosis: insight from the international AD-HOC registry.

BACKGROUND: Evidence regarding transcatheter aortic valve implantation (TAVI) in young (≤ 75 years) low-risk patients with bicuspid aortic valve (BAV) stenosis deemed unsuitable for surgery is scarce. OBJECTIVES: To investigate in-hospital and follow-up outcomes in this population compared with older or higher-risk patients. METHODS: This retrospective international registry included 980 patients with severe BAV stenosis undergoing TAVI, stratified in: Group I, < 69 years and Society of Thoracic Surgeons predicted mortality (STS-PROM) < 4 (N = 113); Group II, 69-75 years and STS-PROM < 4 (N = 173); Group III, > 75 years or STS-PROM ≥ 4 (N = 694). Endpoints included technical success, 30-day device success and safety, transcatheter heart valve (THV) function during follow-up, survival and freedom from transient ischemic attack (TIA)/stroke or heart failure hospitalization. RESULTS: Technical success was comparable (Group I: 94.7%, Group II: 97.1%, Group III: 94.5%; P = 0.37), as were 30-day device success (P = 0.45) and safety (P = 0.29). Regression analyses revealed stable mean transvalvular gradients over follow-up with no differential temporal trends across groups (P = 0.93), and no association between follow-up time and PVL severity (P = 0.17); younger patients showed lower odds of mild PVL compared with older patients. Severe valve deterioration did not occur in Group I and II, versus 3 cases (0.4%) in Group III. Bioprosthesis valve failure rate remained < 2% and similar across groups (P = 0.53). Freedom from TIA/stroke or heart failure rehospitalization was higher in Group I (91.1%) and II (93.8%) than in Group III (81.0%, P = 0.006). CONCLUSIONS: TAVI in young, low-risk BAV patients deemed unsuitable for surgery showed favorable in-hospital outcomes comparable to those of older or higher-risk patients, with stable valve hemodynamics during follow-up.

Vascular Complications in Transcatheter Aortic Valve Replacement Using 14 vs. 18 French Plug-Based Percutaneous Closure Devices: A Propensity Score-Matched Observational Study.

Background/Objectives: Plug-based vascular closure devices (Pb-VCDs) are routinely used in 14 and 18 French (F) size for percutaneous vascular access site closure during transfemoral transcatheter aortic valve replacement (TAVR). Recently, larger 18F Pb-VCDs were linked to increased incidence of vascular complications in randomized comparisons. Smaller 14F devices are hypothesized to decrease the incidence of vascular complications, but real-world data on their safety in routine clinical practice is scarce. Methods: We performed a retrospective, propensity score-matched comparison of patients receiving either 14F or 18F Pb-VCDs during TAVR from March 2019 to December 2020. The choice of 14F or 18F Pb-VCD utilization depended on the sheath size during the procedure. No other vascular closure systems (VCDs) were used despite the MANTA (Teleflex Inc.®, Morrisville, NC, USA) Pb-VCD. The primary endpoints were major and minor vascular complications defined by valve academic research consortium-3 (VARC 3) criteria. Secondary endpoints included VARC-3 bleeding events, length of hospital stay and in-hospital mortality. Results: A total of 183 (14F Pb-VCD) and 110 (18F Pb-VCD) patients were included in 1:1 propensity score matching and resulted in 85 matched patient pairs. The primary endpoint of major and minor vascular complications was balanced between the groups (major: 3.5% (14F Pb-VCD) versus (vs.) 0.0% (18F Pb-VCD), p = 0.25; minor: 12.9% vs. 14.1, p = 1.00). Secondary endpoints of VARC-3 bleeding events (p = 1.00), length of hospital stay (p = 0.34), and in-hospital mortality (p = 1.00) were equally distributed. Conclusions: There is no difference in major and minor VARC-3-defined vascular complications between the 14F and 18F groups in our study. Following this real-world observational analysis, observed rates of vascular complications need to be validated in prospective controlled trials.

Fragmented QRS as a predictor of in-hospital major adverse cardiovascular events in patients undergoing transcatheter aortic valve implantation.

Fragmented QRS (fQRS) on electrocardiography (ECG) is a known marker of myocardial fibrosis and electrical instability. However, its prognostic role in patients undergoing transcatheter aortic valve implantation (TAVI) remains uncertain. This study aimed to evaluate whether the presence of fQRS on preprocedural ECG is associated with increased risk of in-hospital major adverse cardiovascular events (MACE) in patients undergoing TAVI for severe aortic stenosis. A total of 149 patients undergoing TAVI between 2018 and 2025 were retrospectively analyzed. Patients were divided into two groups based on the presence of fQRS. Clinical, laboratory, and echocardiographic parameters were compared, and multivariate logistic regression was used to identify independent predictors of in-hospital MACE. fQRS was present in 54 patients (36.2%) and was significantly associated with higher incidence of in-hospital MACE (48.1% vs. 18.9%, p<0.001). Patients with fQRS also had lower glomerular filtration rates (p=0.009) and higher rates of contrast-induced acute kidney injury (p=0.002). Multivariate analysis confirmed that fQRS (odds ratio [OR] 3.773, p = 0.002), low hemoglobin levels (OR 0.721, p=0.003), and smaller valve size (OR 0.858, p=0.024) were independent predictors of MACE. In conclusion, the presence of fQRS on preprocedural ECG is independently associated with a higher risk of in-hospital MACE in patients undergoing TAVI. fQRS may serve as a simple, non-invasive marker to improve perioperative risk stratification and clinical decision-making in this high-risk population.

Supra-Annular Versus Intra-Annular Devices for Transcatheter Aortic Valve-in-Valve Replacement: The PANDORA International Registry.

BACKGROUND: As transcatheter aortic valve replacement (TAVR) expands to younger, lower-risk populations, the need for repeat procedures due to valve degeneration is expected to increase. TAVR-in-TAVR has emerged as a feasible strategy, although outcomes across supra-annular (SAV) and intra-annular (IAV) valve combinations remain unclear. The PANDORA (Supra-Annular Versus Intra-Annular Devices for TAVR-in-TAVR) international registry study assessed safety, hemodynamic performance, and clinical outcomes of TAVR-in-TAVR according to prosthetic configurations. METHODS: From an international multicenter registry (2011-2024), 172 TAVR-in-TAVR cases were identified among ≈30 000 TAVR procedures, with a median interval of 1401 days. Patients were stratified into 4 groups: SAV-IAV (n=32), SAV-SAV (n=29), IAV-SAV (n=74), and IAV-IAV (n=37). RESULTS: CoreValve/Evolut (49.4%) and Edwards SAPIEN (35.5%) were the most frequent index prostheses, whereas the second valve was mainly Edwards SAPIEN (60.5%), followed by Evolut (35.5%) and Myval/Octacor (4.0%). Structural valve deterioration was the leading failure mechanism (77.9%), while nonstructural valve deterioration dysfunction, alone or combined with structural valve deterioration, occurred in 40.7%. Overall Valve Academic Research Consortium 3 technical success was 91.3%, numerically highest in SAV-IAV and IAV-SAV (P=0.090). Thirty-day device success was 68%, also higher in SAV-IAV (75.9%, P=0.301), mainly influenced by elevated residual gradients (≥20 mm Hg in 12.7%) and the 30-day mortality rate (7.3%). At 1 year, the IAV-IAV group showed the numerically lowest freedom from death and heart failure hospitalization (76.1%, P=0.734). Male sex and chronic kidney disease independently predicted death at follow-up. CONCLUSIONS: TAVR-in-TAVR is feasible with generally favorable outcomes, although clinical and procedural profiles vary by the different prosthesis combinations. These findings highlight the need for further studies to refine device selection strategies.

Association of Dexmedetomidine Use With Complete Heart Block After Transcatheter Aortic Valve Replacement: A Retrospective Single-Center Cohort Study.

OBJECTIVES: Complete heart block requiring permanent pacemaker (PPM) implantation is a known complication after transcatheter aortic valve replacement (TAVR). Dexmedetomidine (DEX) reduces postoperative delirium but is associated with hypotension, bradycardia, and conduction abnormalities. To date, DEX has not been implicated as an independent risk factor for PPM after TAVR. The authors hypothesized that intraoperative DEX use would increase PPM rates after TAVR. DESIGN: Retrospective cohort study. SETTING: Single center from January 1, 2019, to July 1, 2025. PARTICIPANTS: Two thousand twenty-two TAVRs performed under monitored anesthesia care without pre-existing PPM were included. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: DEX use was categorized into 4 levels: no DEX (786 patients), low dose (<1 μg/kg, 354 patients), medium dose (1-2 μg/kg, 581 patents), and high dose (>2 μg/kg, 301 patients). DEX use was not associated with PPM at any dose: low dose, odds ratio (OR) of 0.98 (95% confidence interval [CI], 0.64-1.50; p = 0.92); medium dose, OR of 0.78 (95% CI, 0.50-1.22; p = 0.28), or high dose, OR of 1.05 (95% CI, 0.61-1.82; p = 0.85). Propensity-matched analysis demonstrated no difference in PPM rates between DEX and no-DEX (9.1% v 10.2%, p = 0.61). Higher PPM rates were observed in male patients (OR, 1.89; 95% CI, 1.36-2.64; p < 0.001), dialysis patients (OR, 2.32; 95% CI, 1.11-4.86; p = 0.025), patients with high-risk preoperative electrocardiograms (OR, 2.64; 95% CI, 1.75-3.99; p < 0.001), and patients receiving self-expanding valves (OR, 2.65; 95% CI, 1.77-3.96; p < 0.001). Larger self-expanding valves (OR, 1.25; 95% CI, 1.12-1.39; p < 0.001), post-balloon dilation (OR, 1.51; 95% CI, 1.05-2.18; p = 0.028), and ventricular valve deployment increased PPM risk, while aortic deployment reduced risk (OR, 0.96; 95% CI, 0.94-0.98; p < 0.001). CONCLUSIONS: DEX use during TAVR was not associated with increased risk of postprocedural PPM implantation.

Prognostic Value of the CALLY Index in Predicting All-Cause Mortality After Transcatheter Aortic Valve Implantation: A Two-Year Follow-Up Study.

Background and Objectives: This study investigated the prognostic value of the C-reactive protein-albumin-lymphocyte (CALLY) index in predicting all-cause mortality among patients undergoing transcatheter aortic valve implantation (TAVI) for severe aortic stenosis. Materials and methods: This retrospective single-center study included 303 patients who underwent TAVI. The CALLY index and other established prognostic scores were calculated at baseline. Patients were followed for a median of 21 months. The primary endpoint was all-cause mortality. Results: A total of 60 patients (19.8%) died during follow-up. The CALLY index demonstrated the highest predictive performance for all-cause mortality, with an AUC of 0.698 (95% CI: 0.628-0.768, p < 0.001). In multivariate Cox regression, a low CALLY index remained an independent predictor of mortality (HR: 3.80, 95% CI: 2.03-7.11, p < 0.001), along with reduced LVEF, chronic kidney disease, and diabetes mellitus. Kaplan-Meier analysis further confirmed markedly worse survival in the high-risk group (log-rank p < 0.001). Conclusions: The CALLY index was independently associated with mortality after TAVI and may represent a complementary biomarker for risk stratification in this population.

New-Onset Left Bundle Branch Block After TAVI: An Updated Review.

Transcatheter aortic valve implantation (TAVI) has become the preferred treatment for patients with symptomatic severe aortic valve stenosis. Newer-generation devices, increased operator experience, and improved patient selection have contributed to a reduction in complication rates. However, the occurrence of new-onset left bundle branch block (LBBB) after TAVI remains high, and currently it is the most common complication associated with the procedure. This review discusses the current understanding of new-onset LBBB, including its causes, incidence, clinical outcomes, and management strategies.

Longitudinal trajectory of thoracic CTA-derived sarcopenia stratifies mortality risk in transcatheter aortic valve replacement.

BACKGROUND: Although sarcopenia is a known predictor of outcomes in cardiovascular diseases, its disease trajectory, including improvement, stability, or worsening, following transcatheter aortic valve replacement (TAVR) remains insufficiently explored. This study pioneered using pectoralis muscle index (PMI) from routine thoracic computed tomography angiography (CTA) to track sarcopenia changes post-TAVR and determine prognostic value. METHODS: This single-center cohort included consecutive TAVR patients with serial thoracic CTA at baseline and 1 year. PMI was calculated as pectoralis muscle area at the fourth thoracic vertebra normalized to height2. Using sex-specific PMI thresholds, patients were stratified into four phenotypes: non-sarcopenic, early-onset, late-onset, or persistent sarcopenia. Multivariate Cox regression identified mortality predictors. RESULTS: Among 258 patients (median age 72.86; 56.59% male), both baseline PMI (median 1,067.19 mm2/m2, p = 0.038) and 1-year PMI (median 1,145.95 mm2/m2, p = 0.016) independently predicted survival during a median 1,495-day follow-up (mortality 12.79%). Compared to non-sarcopenic patients, those with persistent sarcopenia (17.83% of cohort) had significantly elevated mortality risk (Hazard ratio = 3.94, 95% CI = 1.44-10.80, p = 0.008). CONCLUSIONS: This study suggests the potential of PMI quantification via thoracic CTA as a clinically integrable tool for prognostic stratification in TAVR recipients through sarcopenia monitoring, which warrants further randomized investigation for potential generalization to other cardiac interventions. The identification of persistent sarcopenia as a modifiable risk factor mandates the implementation of protocolized nutritional optimization and structured rehabilitation programs in high-risk subgroups.

Safety and effectiveness of balloon-expandable Myval transcatheter aortic valve implantation: a single-center, real-world evidence from Kazakhstan.

BACKGROUND: Untreated aortic stenosis (AS) leads to significant mortality and morbidity. Balloon-expandable Myval transcatheter heart valve (THV) has demonstrated safety and effectiveness for treating severe AS in patients at intermediate or high risk for surgery. This retrospective observational study aimed to analyze the safety and efficacy of Myval THV in AS patients who underwent transcatheter aortic valve implantation (TAVI) at a single-center. METHODS: Data from 100 consecutive patients who underwent transfemoral TAVI for severe symptomatic AS with Myval THV were analyzed. Baseline characteristics including medical history, clinical features, procedural data, laboratory and echocardiographic data, and outcome data at discharge and 30 days were collected retrospectively. Outcomes as defined according to the consensus document of the Valve Academic Research Consortium-3 were determined. RESULTS: Baseline characteristics of 100 patients were: 64% males, mean age: 70.87 ± 7.85 years, mean body mass index: 27.97 ± 4.30 Kg/m2, Society of Thoracic Surgeons risk score: 2.88 ± 2.18% and log EuroSCORE: 3.34 ± 2.82% respectively. Following transfemoral TAVI, mean and peak gradients were reduced (p < 0.001). There was a significant improvement in Vmax 2.50 ± 1.52 m/s (p < 0.0001), left ventricular ejection fraction 50.5 ± 10.64% (p = 0.0003), aortic valve area 1.76 ± 0.52 (p = 0.0013), and indexed aortic valve area 0.92 ± 0.28 (p = 0.0034) at discharge which continued at 30-day follow-up. Nearly 94% of patients were asymptomatic and in the New York Heart Association class I-II, with 22% of patients reduced the degree of mitral regurgitation at 30 days. At discharge, only 4.12% had moderate aortic regurgitation while 73.2% had none. Two patients had stroke while 15 patients had conduction disturbances, which led to the implantation of permanent pacemakers. No death or hospitalization were reported. Life-threatening bleeding and access-related complications did not occur in any patient. The rates of the device and technical success were 95%. CONCLUSION: Real-world data on the use of technologically advanced Myval THV leads to safe and precise orthotopic positioning in TAVI patients, ensuring optimal, large effective orifice area, and normal hemodynamic status.

Prognostic value of transaortic flow rate compared with ejection fraction and stroke volume index in low-gradient severe aortic stenosis.

BACKGROUND: In low-gradient severe aortic stenosis (AS), reduced left ventricular ejection fraction (LVEF <50%) is practically used to define low flow and prompt dobutamine stress echocardiography to discern pseudo-severe AS. In patients with preserved LVEF, stroke volume index (SVI) <35 mL/m² is typically used. However, both are volume-based surrogates. Transaortic flow rate (TAFR), calculated as stroke volume divided by left ventricular ejection time, may better reflect true flow. Nonetheless, comparative data between TAFR and established metrics remain limited. We aimed to evaluate the prognostic value of TAFR in symptomatic low-gradient severe AS. METHODS: We retrospectively identified patients with low-gradient severe AS (AVA ≤1 cm2 and peak velocity (Vmax) <4 m/s or mean gradient (MG) <40 mm Hg) who underwent transcatheter aortic valve replacement at Mayo Clinic sites (2017-2023). The primary outcome was 1-year all-cause mortality. Survival was assessed using Kaplan-Meier and Cox proportional hazards models. RESULTS: Among 475 patients included (mean age 85±8 years; 49% women), 242 (51%) had TAFR <220 mL/s, 165 (35%) had EF <50%, and 221 (47%) had SVI <35 mL/m2. Low TAFR was significantly associated with higher 1-year mortality even after stratifying by EF or SVI. In multivariate analysis, TAFR was an independent predictor of mortality (HR 2.38; 95% CI 1.19 to 4.76, p=0.014) after adjusting for reduced LVEF, low SVI, gender, chronic kidney disease and mitral and tricuspid regurgitation. CONCLUSIONS: In patients with symptomatic low-gradient severe AS, low TAFR, not SVI or LVEF, is independently associated with mortality and may offer more accurate measure of flow state for clinical staging.

The Impact of Vascular Access Complications in Patients Undergoing Transcatheter Aortic Valve Replacement.

BACKGROUND: Vascular complications remain a significant concern in transfemoral transcatheter aortic valve replacement (TAVR). AIMS: Determine the incidence of vascular complications following TAVR and evaluate their impact on short- and long-term clinical outcomes. METHODS: We conducted a retrospective observational analysis of patients undergoing transfemoral TAVR at a single institution. Patients were stratified into three groups: Group 0 (no perioperative complications), Group 1 (vascular complications), and Group 2 (non-vascular complications). The primary outcome was early- and late-mortality. Propensity score matching was performed to compare outcomes between Group 0 and Group 1. RESULTS: Among 5230 patients, 4391 (84.0%) were in Group 0, 154 (2.9%) in Group 1, and 685 (13.1%) in Group 2. In Group 1, 36.4% experienced intraoperative bleeding requiring intervention, 27.3% had intraoperative limb ischemia or dissection, and 16.2% required postoperative takeback for limb ischemia. In-hospital mortality was 12/154 (7.8%) in Group 1, compared with 7/4391 (0.2%) in Group 0 and 45/685 (6.6%) in Group 2 (p < 0.001). Thirty-day mortality was 16/154 (10.4%) in Group 1 versus 117/4391 (2.7%) in Group 0 and 70/685 (10.2%) in Group 2 (p < 0.001). Propensity-matched analysis showed Group 1 had fourfold higher 30-day mortality (OR 4.02, 95% CI 1.98-8.18, p < 0.001). One-year mortality was 29/148 (19.6%) for Group 1 compared with 72/592 (12.2%) for Group 0, with 5-year survival similar between groups (Group 1: 51.1%, Group 0: 50.9%, log-rank p = 0.214), while unmatched Group 2 had 43.1% 5-year survival. CONCLUSION: While vascular complications after TAVR are uncommon, they are linked to substantially worse early outcomes, whereas long-term survival among patients who survive the initial postoperative period remains comparable, emphasizing the critical impact during the early phase.

Initial Outcomes After Trans-Right Subclavian Transcatheter Aortic Valve Implantation: Analysis of Device Coaxiality.

BACKGROUND: Trans-subclavian access transcatheter aortic valve implantation (TAVI), typically from the left side, is feasible. However, right subclavian artery access is technically challenging because of the anatomical orientation, resulting in malalignment of the transcatheter heart valve within the aortic annular plane. METHODS AND RESULTS: We aimed to evaluate procedural outcomes, device-annulus alignment, and clinical efficacy of right trans-subclavian (RtTS) TAVI. Of a consecutive 423 patients who underwent TAVI, 32 cases performed via right and left subclavian access were analyzed. Implanted device depth and angle were analyzed angiographically. The device-annulus angle was measured angiographically. Fifteen of 22 patients were treated with a balloon-expandable valve, and 7 patients received a self-expanding valve, via RtTS. Procedural success was achieved in all cases. Compared with femoral and left subclavian approaches, RtTS led to a significantly larger device-annulus angle (6.0° vs. 8.7°; P<0.05), with deep left coronary cusp implantation (2.4 vs. 4.4 mm; P=0.05). Post-procedural transcatheter heart valve function was comparable across the groups, and no patients had greater than moderate paravalvular leakage. However, the incidence of symptomatic stroke occurred in 2 patients in the RtTS group (9.1%; P=0.21). CONCLUSIONS: RtTS TAVI is a feasible alternative access route, with comparable procedural and clinical outcomes to those of conventional approaches, albeit with a higher risk of stroke.

Impact of Preoperative Malnutrition and Sarcopenia on Clinical Outcomes After Transcatheter Aortic Valve Replacement.

BACKGROUND: The impact of coexisting malnutrition and sarcopenia on survival after transcatheter aortic valve replacement (TAVR) has not been fully studied. METHODS AND RESULTS: Among 513 consecutive patients undergoing TAVR between February 2014 and June 2023, 340 with available preoperative Geriatric after Nutritional Risk Index (GNRI) and Short Physical Performance Battery (SPPB) data were categorized into 4 groups based on malnutrition (GNRI <98) and sarcopenia (SPPB ≤9) status: malnutrition and sarcopenia (N=98); malnutrition without sarcopenia (N=69); no malnutrition with sarcopenia (N=83); neither malnutrition nor sarcopenia (N=90, reference). The primary outcome measure was all-cause death. Patients with both malnutrition and sarcopenia were older and had a higher prevalence of anemia compared with the reference group. The cumulative 5-year mortality rate was significantly higher in this group. After adjusting for confounders, coexistence of malnutrition and sarcopenia had a significantly higher risk for all-cause death (hazard ratio [HR] 3.15; 95% confidence interval [CI]: 1.68-5.89; P<0.001). In contrast, malnutrition without sarcopenia (HR 1.36; 95% CI 0.64-2.90; P=0.42) and no malnutrition with sarcopenia (HR 1.86; 95% CI 0.92-3.79; P=0.08) were not associated with increased mortality. CONCLUSIONS: The coexistence of malnutrition and sarcopenia significantly increased mortality risk after TAVR, which highlights the importance of integrating both nutritional and sarcopenia assessments into preoperative risk stratification to optimize outcomes in patients undergoing TAVR.

Left vs. Normal QRS Axis During Left Bundle Branch Block Induced by Transcatheter Aortic Valve Replacement: 3-Year Outcomes.

BACKGROUND: The clinical impact of left QRS axis deviation (LAD) during new-onset left bundle branch block (LBBB) after transcatheter aortic valve replacement (TAVR) remains unclear. METHODS AND RESULTS: This single-center retrospective study analyzed 254 patients who developed new-onset LBBB during hospitalization after TAVR. Clinical and echocardiographic outcomes were compared between patients with LBBB and LAD (LBBBLAD) and those with LBBB and a normal QRS axis (LBBBNA). 96 patients (38%) had LBBBLAD, defined as a QRS axis <-30°. A more leftward preprocedural QRS axis independently predicted LBBBLAD (odds ratio 1.20 per 10° decrement; 95% confidence interval (CI) 1.09-1.33; P<0.01). At 3 years, there were no significant differences between groups in all-cause death (28% vs. 19%; P=0.14), cardiovascular death (6% vs. 5%; P=0.73), or heart failure rehospitalization (18% vs. 10%; P=0.07). However, LBBBLAD was associated with a higher incidence of permanent pacemaker implantation (PPI) for atrioventricular conduction disorder (16% vs. 6%; P=0.02) and remained an independent predictor of PPI (Cox hazard ratio 2.46; 95% CI 1.06-5.73; P=0.04). Echocardiographic measures, including left ventricular ejection fraction, chamber size, and mitral regurgitation severity showed no significant longitudinal differences between groups. CONCLUSIONS: Compared to post-TAVR LBBBNA, post-TAVR LBBBLAD is associated with an increased need for PPI, but not with adverse mortality or heart failure outcomes at 3-year follow-up. Closer and extended rhythm monitoring may be warranted in this subgroup.

Contribution of Non-Sustained Ventricular Tachycardia to the Primary Prevention of Sudden Cardiac Death - Validation of Current Japanese Circulation Society / Japanese Heart Rhythm Society Guideline Recommendations in the Nippon Storm Study.

BACKGROUND: The prognostic significance of non-sustained ventricular tachycardia (NSVT) in Japanese patients receiving implantable cardioverter defibrillators (ICDs) for primary prevention remains unclear. This study aimed to verify the prognostic value of NSVT as recommended in the 2018 Japanese Circulation Society guideline. METHODS AND RESULTS: We analyzed 638 patients with structural heart disease who received an ICD or cardiac resynchronization therapy with defibrillator for primary prevention in the Nippon Storm Study. Analysis 1 (n=429) evaluated the association between NSVT history and predefined endpoints in patients with ischemic heart disease (IHD) or non-ischemic heart disease (non-IHD) and reduced left ventricular ejection fraction. Analysis 2 (n=357) assessed the prognostic impact of NSVT documented by Holter electrocardiography across 2 subgroups: Subgroup 1, IHD and non-IHD; and Subgroup 2, other cardiac diagnoses. Endpoints included appropriate ICD therapy, electrical storm, ventricular fibrillation (VF), shock therapy, and mortality. In Analysis 1, a history of NSVT was not significantly associated with appropriate ICD therapy or other major adverse outcomes. In Analysis 2, Holter-documented NSVT was independently associated only with appropriate ICD therapy (hazard ratio [HR] 1.82; 95% confidence interval 1.04-3.18; P=0.035). This association was significant in Subgroup 2, but not in Subgroup 1. CONCLUSIONS: NSVT was modestly associated (HR 1.82) with appropriate ICD therapy but not with VF or mortality, suggesting reconsideration of its clinical role.

THOC6 deficiency leads to Cardiomyopathy by Reducing Myocardial Contractile Proteins in Cardiomyocytes.

BACKGROUND: The THOC6 protein is an essential part of the THO complex. Biallelic loss-of-function variants in the THOC6 gene are linked to Beaulieu-Boycott-Innes syndrome (BBIS; OMIM 613680). Although research predominantly focuses on THOC6's involvement in neurodevelopmental disorders, approximately 80% of BBIS patients present with cardiac anomalies, including structural heart disease, cardiomyopathy, and arrhythmia. Despite this, the connection between THOC6 expression and cardiac development remains underexplored. This study firstly investigates THOC6's role in heart development. METHODS AND RESULTS: This study we firstly utilized CRISPR/Cas9 to knock out THOC6 in H9C2 cardiomyocytes, revealing a reduction in cell proliferation and an increase in apoptosis. With RNA sequencing (RNA-seq) analysis we found abundant gene changes after THOC6 knockout (KO) in H9C2, which associated with hypertrophic cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, and dilated cardiomyopathy. Protein-protein interaction analysis and experimental validation indicated that THOC6 regulates the expression of type I collagen (COL1A1, COL1A2) and cytoskeletal protein (Cardiac α actin 1) in cardiomyocytes. Subsequently, we generated a THOC6 knockout cell lines in human induced pluripotent stem cells (hiPSCs) derived from a healthy individual using CRISPR/Cas9 technology. THOC6 knockout (KO) in hiPSCs-derived cardiomyocytes (hiPSC-CMs) led to the early manifestation of hypertrophic cardiomyopathy and dilated cardiomyopathy phenotypic characteristics, including disrupted sarcomeric organization. Notably, THOC6 KO hiPSC-CMs demonstrated a significant decreased in COL1A2 and β-tubulin expression levels. CONCLUSION: THOC6 may influence cardiac development by regulating myocardial contractile proteins, primarily type I collagen, cardiac α actin 1 and β-tubulin.

Stereotactic Arrhythmia Radioablation: An Emerging Technique for the Treatment of Ventricular Tachycardia.

Ventricular tachycardia (VT) in patients with structural heart disease is a significant cause of both morbidity and mortality. Current treatment options for VT include the implantation of implantable cardioverter-defibrillators, anti-arrhythmic medications, and catheter ablation. Although implantable cardioverter-defibrillators can terminate arrhythmias by delivering shocks, they do not address the underlying cause and may even contribute to recurrence or cause discomfort for the patient. Anti-arrhythmic drugs may reduce the frequency of VT episodes but are often associated with various side effects. Catheter ablation can effectively eliminate the arrhythmogenic substrate, but it is an invasive procedure and not always successful. Recent studies have investigated stereotactic arrhythmia radioablation as a potential alternative, offering a less invasive, effective, and well-tolerated treatment by using photons, protons, and carbon ions to target and destroy arrhythmic tissue externally. This review aims to examine the current evidence and potential clinical applications of stereotactic arrhythmia radioablation.

Lactation Safety in Peripartum Cardiomyopathy.

Peripartum cardiomyopathy (PPCM) is a rare but potentially life-threatening form of heart failure that occurs toward the end of pregnancy or in the months following delivery. It is characterized by left ventricular systolic dysfunction in women without preexisting structural heart disease. Despite increasing recognition, the pathophysiology of PPCM remains incompletely understood. Accumulating experimental and clinical evidence supports a central role for hormonal dysregulation in disease development, particularly involving prolactin (PRL). During late pregnancy and the postpartum period, heightened oxidative stress promotes cleavage of full-length PRL into a 16-kDa fragment with potent antiangiogenic, proinflammatory, and proapoptotic properties. While total circulating PRL levels are elevated in PPCM, it is the generation of the 16-kDa PRL fragment, rather than absolute PRL concentration, that appears to be most strongly linked to disease severity and progression. The recognition of this mechanism has provided a framework for targeted therapeutic strategies. As many women choose to breastfeed, there are concerns about the safety of breastfeeding in PPCM. This review summarizes the experimental and clinical evidence related to elevated PRL levels, particularly the cleaved 16-kDa PRL fragment's contribution to disease development, with emphasis on lactation safety in PPCM.

Early safety and efficacy of intra-annular versus supra-annular self-expanding transcatheter heart valves.

BACKGROUND: Comparative data on safety and efficacy of intra- and supra-annular self-expanding heart valves (THV) for transcatheter aortic valve implantation (TAVI) in patients with severe aortic stenosis (AS) is scarce. The FIRE TAVI study compared procedural in-hospital and mid-term outcomes of the intra-annular Navitor THV and the supra-annular Evolut PRO THV. METHODS: The retrospective, multicenter study enrolled patients with severe AS who underwent TAVI using Navitor or Evolut PRO. The primary composite safety endpoint included all-cause mortality, myocardial infarction, disabling stroke, life-threatening bleeding, major vascular complication, or acute kidney injury requiring dialysis until discharge. Secondary endpoints comprised pacemaker implantation, paravalvular leakage (PVL), and mean transvalvular gradient. Mortality was assessed 381 ± 308 days after TAVI. Multivariable regression analysis was used for endpoint comparison of both THVs. RESULTS: Then, 269 patients after Navitor and 272 patients after Evolut PRO implantation were enrolled. There was no significant risk difference regarding the adjusted primary safety endpoint (OR 0.97 [95% CI 0.50-1.89]) and rate of pacemaker implantation (OR 1.13 [95% CI 0.67-1.90]). The pressure gradient was comparable between both groups (Navitor 7.0 [4.0-10.0] mmHg vs. Evolut PRO 6.0 [2.0-10.0] mmHg, mean difference - 0.32 [95% CI -0.97-0.32]). Navitor showed a lower frequency of more than mild PVL (0.8% vs. 3.5%, p = 0.032). Mortality was similar (HR 1.04 [95% CI 0.66-1.63]). CONCLUSION: The implantation of the intra-annular Navitor and the supra-annular Evolut PRO was safe, with severe adverse events occurring at similar rates until discharge. The risk of moderate or severe PVL was lower with Navitor; mid-term mortality was comparable in both groups.

Patients implanted with a leadless pacemaker after transcatheter aortic valve implantation: Results from the MITAVI prospective study.

BACKGROUND: Transcatheter aortic valve implantation is a well-established clinical procedure for treating severe aortic stenosis. High-grade atrioventricular block has been reported in 10-30% of patients following transcatheter aortic valve implantation. Traditional transvenous pacemakers are associated with several potential complications, including endocarditis, lead dislodgement or fracture, pocket haematoma and tricuspid regurgitation. These risks may be mitigated with the use of leadless pacemakers. AIM: We proposed to evaluate the 1-year clinical and electrical outcomes of patients implanted with a leadless pacemaker following transcatheter aortic valve implantation. METHODS: From July 2019 to December 2022, 102 patients from four French centres who underwent transcatheter aortic valve implantation and subsequently required pacemaker implantation with a leadless pacemaker (Micra; Medtronic, Dublin, Ireland) were evaluated prospectively. RESULTS: The mean patient age was 82±9 years, and the mean baseline left ventricular ejection fraction was 58.4±10.6%. Major complications included one case of cardiac tamponade and one case of device migration. During 12-month follow-up, one patient required transvenous cardiac resynchronization therapy pacing because of severe heart failure. The all-cause death rate was 12%, and the heart failure hospitalization rate was also 12%. Compared with baseline, leadless pacemaker electrical variables improved at 1 year. Additionally, complete atrioventricular conduction restoration was observed in 38% of the cohort. CONCLUSIONS: Leadless pacemakers can be implanted in patients following transcatheter aortic valve implantation, with low complication rates and excellent electrical variables at 1-year follow-up. The need for an upgrade to a transvenous pacemaker was low (< 1%).

A Nitric Oxide-Releasing Zwitterionic Glycocalyx-Mimetic Hydrogel Armored Bioprosthetic Valve with Integrated Antithrombotic, Endothelialization-Promoting, and Immunomodulatory Capacities.

The global prevalence of heart valve disease (HVD) is currently increasing with the population ages, and heart valve replacement surgery is considered as the definitive treatment for HVD. Bioprosthetic heart valves (BHVs) are widely implanted with the development of transcatheter heart valve replacement. Nonetheless, BHVs are prone to degeneration within 10-15 years due to the inherent drawbacks including thrombosis, poor endothelialization, inflammation, and calcification. Herein, a nitric oxide-releasing zwitterionic glycocalyx-mimetic hydrogel armored bioprosthetic valve (AHS-P) was engineered. Zwitterionic glycocalyx-mimetic hydrogel surface was uniformly welded on the BHV by photo-induced polymerization, which markedly enhanced the hydrophilicity and biocompatibility of BHV, effectively resisting the adhesion of plasma proteins and platelets, and inhibiting thrombosis. With the introduction of L-arginine on glycocalyx-mimetic hydrogel, nitric oxide (NO) was intracellularly generated from the dynamically released L-Arg by the iNOS to regulate the immune responses, and the growth and adhesion of endothelial cells (HUVECs) was also facilitated by activating the RhoA-ROCK and PI3K/AKT/mTOR signaling pathways. The immune-inflammatory reactions on AHS-P were also modulated, with downregulated TNF-α and M1 macrophages and upregulated IL-10 and M2 macrophages, creating an immune-balancing microenvironment for enhanced biocompatibility. Furthermore, rat subcutaneous implantation showed that the calcification degree of AHS-P was markedly reduced. Collectively, the engineered BHV (AHS-P) demonstrated enhanced antithrombosis, anticalcification, endothelialization and immunoregulation performances, offering a new way to extend the service life of BHVs. STATEMENT OF SIGNIFICANCE: This work developed a nitric oxide-releasing zwitterionic glycocalyx-mimetic hydrogel-coated BHV to overcome key limitations such as thrombosis, poor endothelialization, inflammation, and calcification-issues associated with the cytotoxic xenogeneic collagenous matrix of BHVs. Zwitterionic glycocalyx-mimetic hydrogel was welded on BHVs to shield the matrix, resist the thrombosis and calcification, and serve as the scaffold for endothelialization. L-Arg was then incorporated to enable NO release, promoting endothelial cell adhesion and growth via RhoA-ROCK and PI3K/AKT/mTOR pathway activation. The immune-inflammatory reactions on BHVs were also downregulated. This work synergistically improved the antithrombosis, anticalcification, endothelialization and immunoregulation performances of BHVs, offering a promising strategy to extend BHV longevity.

Left atrial functional recovery precedes volumetric reverse remodeling after TAVI by speckle tracking echocardiography.

The temporal sequence of left atrial (LA) functional and structural remodeling after transcatheter aortic valve implantation (TAVI) for severe aortic stenosis (AS) remains inadequately characterized. We aimed to evaluate the mid-term changes in LA mechanics and volume using speckle-tracking echocardiography (STE). In this prospective observational study, 162 patients with severe AS undergoing TAVI were enrolled. Echocardiography was performed at baseline, 1, 6, and 12 months post-procedure. LA reservoir strain (LASr), conduit strain (LAScd), and pump strain (LASct) were measured by STE. LA volumes and the LA volume index (LAVI) were also assessed. LA strain parameters (LASr, LAScd, LASct) improved significantly at 1 month post-TAVI (all P < 0.05) and continued to improve through 12 months. LAVI also decreased significantly at 1 month (34.3 ± 6.6 ml/m² to 28.5 ± 5.9 ml/m², P < 0.05). However, the absolute LA volumes (LAVmax and LAVmin) showed significant reduction only at 6 months post-TAVI (P < 0.05). After TAVI, LA functional improvement, assessed by STE, occurs early and with greater magnitude than volumetric changes. While LAVI decreases promptly-likely reflecting early hemodynamic unloading-reductions in absolute LA volumes are delayed. STE-derived LA strain serves as a sensitive early marker of LA adaptation following relief of outflow obstruction.

Sex-specific utility of pulmonary artery metrics in predicting pulmonary hypertension and survival after TAVI: insights from advanced CT imaging.

OBJECTIVE: Pulmonary hypertension (PH) significantly affects outcomes after transcatheter aortic valve implantation (TAVI), with sex-specific differences indicating the need for tailored strategies. This study investigated the predictive value of CT-derived main pulmonary artery (MPA) dimensions and ratios, focusing on diagnostic accuracy and prognostic relevance in male and female TAVI patients. MATERIALS AND METHODS: A retrospective analysis of 526 patients (263 male, 263 female) undergoing TAVI was performed. PH was defined echocardiographically according to European Society of Cardiology (ESC) guidelines. Pre-procedural CT measurements of MPA, ascending aorta (AA), and derived ratios (e.g., MPA/AA) were analyzed. Sex-specific cut-offs were determined using area under the receiver operating characteristic (AUROC) analyses and validated with survival curves and Cox regression. RESULTS: MPA and its ratios outperformed right and left pulmonary artery metrics in detecting PH. Overall cut-offs were MPA ≥ 29.5 mm and MPA/AA ≥ 0.76. In men, elevated MPA or MPA/AA showed strong associations with PH, whereas in women, higher cut-offs (MPA ≥ 30.0 mm; MPA/AA ≥ 0.86) were less diagnostically useful. Importantly, the MPA/AA ratio predicted long-term survival only in men (hazard ratio (HR) = 1.857, p = 0.006), underlining its limited prognostic role in females. CONCLUSION: CT-derived pulmonary artery metrics are valuable for predicting PH and survival in male TAVI patients. Incorporating the MPA/AA ratio into clinical practice may improve risk stratification in men, while limited diagnostic utility in women highlights the need for alternative markers. Sex-specific approaches should be pursued to optimize outcomes across all PH etiologies. CRITICAL RELEVANCE STATEMENT: CT-derived pulmonary artery metrics reliably predict PH and long-term survival after TAVI, particularly in men, emphasizing their diagnostic and prognostic value while underscoring the need for sex-specific thresholds and alternative markers in women. KEY POINTS: PH impacts TAVI outcomes, yet sex-specific radiological predictors remain insufficiently investigated. The pulmonary artery to AA ratio predicted survival in men but showed no prognostic value for women. Implementing sex-specific imaging assessments improves risk stratification in men, highlighting the need for distinct diagnostic strategies for women.

Impact of Extravalvular Remodeling on Wearable Smartwatch-Recorded Physical Activity in Patients Undergoing Transcatheter Aortic Valve Implantation for Severe Symptomatic Aortic Stenosis.

BACKGROUND: Wearable smartwatches enable objective quantification of physical activity. This study evaluated the association of extravalvular cardiac damage in aortic stenosis with smartwatch-recorded physical activity before and after transcatheter aortic valve implantation (TAVI). METHODS: Patients with severe symptomatic aortic stenosis were dichotomized into cardiac damage stages 0 to 2 (left-heart dysfunction) and stages 3 to 4 (pulmonary/right-heart dysfunction) by echocardiography. All patients received a Fitbit smartwatch for 7 days of continuous monitoring before transcatheter aortic valve implantation and at 6-month follow-up. Regression models determined significant predictors of total daily step count and moderate to vigorous physical activity (MVPA). RESULTS: Within the study cohort (stages 0-2: 43 [50.6%]; stages 3-4: 42 [49.4%]), all patients showed significant improvement in physical activity from baseline to follow-up (all P<0.001). Patients in stages 3 to 4 had significantly lower total daily step count and MVPA at baseline and follow-up, as well as a smaller improvement in MVPA (all P<0.05). Relative to stages 0 to 2, stages 3 to 4 were significantly associated with lower step count and MVPA at baseline (step count: β=-1453.8 [95% CI, -2351.3 to -554.2], P=0.002; MVPA: β=-12.9 [95% CI, -24.3 to -1.5], P=0.027) and follow-up (step count: β=-1438.1 [95% CI, -2453.9 to -422.3], P=0.006; MVPA: β=-27.4 [95% CI, -47.7 to -7.1], P=0.009), as well as less improvement in MVPA (β=-14.5 [95% CI, -28.4 to -0.48], P=0.043) after transcatheter aortic valve implantation. CONCLUSIONS: The extent of cardiac damage before transcatheter aortic valve implantation has an important impact on physical activity, both at baseline and following intervention. Future studies should examine whether smartwatch-measured activity predicts death across cardiac damage stages and whether cardiac rehabilitation improves outcomes in aortic stenosis with advanced remodeling.

The Optimal Cannulation Strategy for Acute Type A Aortic Dissection Aortic Repair: Aortic Versus Axillary.

OBJECTIVE: The purpose of this study was to assess the safety and efficacy of aortic cannulation in comparison with right axillary artery (RAX) cannulation. METHODS: Between 2018 and 2023, 267 and 364 patients underwent aortic or axillary cannulation for aortic repair for acute type A aortic dissection (ATAAD), respectively. Clinical features and outcomes were compared after inverse probability of treatment weighting was stabilized. RESULTS: In the original cohort, patients in the aortic group had higher incidences of innominate artery (IA) dissection (59.6% vs. 45.1%, p<0.001), RAX dissection (13.9% vs. 4.7%, p<0.001), and right common carotid artery (RCCA) dissection (42.7% vs. 13.7%, p<0.001). After weighting, baseline characteristics were well balanced, resulting in a pseudo-cohort of aortic (n=265) vs. RAX (n=357) patients. Aortic cannulation was associated with a lower rate of cannulation-related complications (0.4% vs. 3.5%, p=0.011). In-hospital mortality (8.3% vs. 6.1%, p=0.346) and stroke rates (4.1% vs. 5.8%, p=0.383) were comparable between groups. The aortic group experienced lower rates of reoperation for bleeding (8.0% vs. 2.3%, p=0.001) and extracorporeal membrane oxygenation use (5.0% vs. 2.0%, p=0.046). Mid-term survival did not differ significantly before (p=0.849) or after weight stabilization (p=0.345). CONCLUSION: Direct aortic cannulation in ATAAD provides in-hospital and mid-term outcomes that are not statistically different from those with axillary cannulation. Aortic cannulation offers an alternative to axillary cannulation, especially for patients with IA/RAX/RCCA dissection.

In silico modeling of transcatheter heart valve oversizing and ellipticity, Part II: Effects on leaflet mechanics, hemodynamics, and stent deflection contributing to thrombogenic risk and structural degeneration.

BACKGROUND AND OBJECTIVES: Transcatheter aortic valve implantation (TAVI) is the leading treatment for aortic stenosis. Self-expanding transcatheter heart valves (THVs) are oversized to prevent paravalvular leakage and then deployed over the diseased native valve. However, this can result in incomplete expansion and elliptical deployment, which may influence thrombogenic risk and structural degeneration, although this is not fully understood. METHODS: In this study, we utilized a validated in silico framework to assess the impact of THV oversizing and ellipticity on leaflet mechanics, hemodynamic shear stress and stent deformation, which are indicators of structural degeneration and thrombogenicity. We simulated self-expansion of a deformable THV stent within an idealized aortic annulus, applied pulsatile loading conditions representative of the cardiac cycle and then evaluated post-deployment frame deformation, leaflet mechanics, hemodynamics and stent fatigue. RESULTS: We predicted stent-frame decoupling of the supra-annular THV, with increased expansion and circularity at the functional valve level compared to the inflow. THV oversizing reduced valve expansion at the supra-annular valve level (< 90% expansion), which increased leaflet coaptation and pinwheeling, but reduced peak leaflet stresses and stent deflection compared to nominal sizing. Oversizing also altered hemodynamics, causing early mainstream flow separation, which increased leaflet oscillatory shear and viscous shear stress downstream of the THV, potentially increasing thrombogenic risk and promoting tissue degeneration. THV ellipticity induced heterogenous stent deflections, leading to variable leaflet stress distributions and coaptation mismatch. CONCLUSION: We propose that flexible THV stents may mitigate adverse effects of elliptical deployment and emphasize the importance of assessing THV expansion through fluoroscopy and considering post-TAVI balloon-dilatation to increase expansion and improve long-term functional valve performance.

Dynamic Changes in Circulating Osteogenic Progenitor Cells Following TAVI: Implications for Vascular Remodeling-EPC and EPC-OCN Dynamics After TAVI.

Background: The prevalence of severe aortic stenosis (AS) is increasing, in accordance with a longer life expectancy. Aortic valve calcification is a multifactorial pathological process involving a complex interplay between different types of regenerative cellular and genetic factors. Among these cells, endothelial progenitor cells (EPCs) and their osteoblastic phenotype subpopulation (EPC-OCNs) have been implicated in vascular remodeling and disease progression. Objectives: To assess longitudinal changes in EPC and EPC-OCN levels in patients with severe symptomatic AS undergoing transcatheter aortic valve implantation (TAVI). Methods: In this prospective observational study, 65 patients with severe AS undergoing TAVI were enrolled. Circulating EPC and EPC-OCN levels were quantified by flow cytometry before the procedure, at 4 ± 1 days, and at 90 ± 29 days after TAVI. EPCs were defined by expression of CD133, CD34, and VEGFR-2. Results: Circulating EPC levels remained unchanged throughout the follow-up. In contrast, circulating EPC-OCNs increased significantly over time. Specifically, CD133+/VEGFR-2+/OCN+ cells rose from 2.50% to 6.25%, CD34+/VEGFR-2+/OCN+ from 2.04% to 4.05%, and VEGFR-2+/OCN+ from 1.46% to 3.01% (all p < 0.01). This suggests an osteogenic response to TAVI, while classical endothelial repair mechanisms were not systemically activated. Conclusions: EPC-OCNs increased significantly following TAVI, possibly reflecting ongoing tissue remodeling or calcification processes. In contrast, the stability of classical EPCs levels suggests limited systemic endothelial regeneration. These observations underscore the potential role of EPC-OCNs as markers or modulators of pre- and post-TAVI vascular remodeling.

Early reversal of cardiac remodeling in patients with new-onset persistent left bundle branch block after transcatheter aortic valve replacement.

OBJECTIVE: New-onset persistent left bundle branch block (LBBB) following transcatheter aortic valve replacement (TAVR) is an independent predictor of long-term cardiovascular mortality in patients. The aim of this study is to evaluate the impact of new-onset LBBB on early cardiac reverse remodeling and clinical outcomes after TAVR. METHODS: A retrospective analysis was performed on 101 patients who underwent successful TAVR for severe aortic stenosis between March 2021 and October 2024 at our institution. Echocardiographic variables indicative of cardiac remodeling were analysed preoperatively and at one and six months after TAVR. Furthermore, the clinical outcomes of the patients were monitored during the follow-up period. RESULT: Of the 101 patients who underwent TAVR, 28 (27.7%) had new-onset LBBB. Transcatheter heart valve(THV) implantation depth was an influential factor for new LBBB, which was more prevalent in patients with thinner interventricular septal thickness preoperatively. At the six-month follow-up, the new-LBBB group showed an increase in left ventricular diameter and left ventricular mass index and a reduction in left ventricular ejection fraction compared with the preoperative period. Mitral regurgitation in the no-LBBB group was significantly reduced at 1 month postoperatively. In contrast, mitral regurgitation in new-LBBB group was reduced at one month postoperatively, but worsened at six months.There was no significant difference in rehospitalization rates within 6 months postoperatively between patients with or without LBBB. CONCLUSIONS: New-onset persistent LBBB after TAVR did not affect short-term rehospitalization, but may adversely affect early postoperative reversal of cardiac remodeling.

Discrepancy Between Invasive and Echocardiographic Transvalvular Gradients After TAVI Procedure: A Review of the Literature.

Background/Objectives: Transcatheter aortic valve implantation (TAVI) has become an established treatment for patients with severe aortic stenosis. The accurate post-procedural assessment of transvalvular gradients is essential for evaluating procedural success and long-term prognosis. However, significant discrepancies have been reported between gradients measured invasively and those derived by Doppler echocardiography. This systematic review aims to summarize the current evidence comparing invasive and echocardiographic gradient measurements after TAVI. Methods: A comprehensive literature search was conducted of the PubMed database from inception to 8 November 2025 using the keywords: "TAVI/TAVR," "invasive versus echocardiographic gradient," and related terms. Studies were included if they compared invasive and Doppler-derived aortic valve gradients following TAVI. Out of 44 identified articles, 12 studies met the inclusion criteria and were analyzed. Results: Across all the included studies, the echocardiography-derived mean gradients were consistently 4-7 mmHg higher than those obtained invasively, reflecting physiologic rather than procedural discordance. The difference was more pronounced in balloon-expandable and small-diameter valves and in patients with high-flow states. Invasive gradients were independently associated with mortality and major adverse cardiovascular events (MACEs) in multiple studies. An invasive mean gradient ≤ 10 mmHg immediately post-TAVI was repeatedly identified as the threshold for optimal procedural success and improved long-term outcomes. Conclusions: Doppler echocardiography systematically overestimates transvalvular gradients after TAVI. While both modalities remain valuable, an invasive hemodynamic assessment provides the most reliable evaluation of immediate procedural success and long-term prognosis. Echocardiographic gradients should be interpreted relative to the baseline invasive measurement to avoid overdiagnosis of prosthetic dysfunction and ensure appropriate clinical management.

Advancing aortic stenosis assessment: Validation of fluid-structure interaction models against 4D flow MRI data.

Systematic in vivo validations of computational models of the aortic valve (AV) remain scarce, despite successful validation against in vitro data. Utilizing a combination of computed tomography and 4D flow magnetic resonance imaging data, we developed patient-specific fluid-structure interaction models of the AV immersed in the aorta for five patients in the pre-transcatheter AV replacement configuration. Our computational models are subjected to rigorous validation against 4D flow measurements. Our results demonstrate the models' capacity to accurately replicate flow dynamics. In addition, we illustrate how computational models can serve as valuable cross-checks to reduce noise and erratic behaviour of in vivo data. Crucially, our validated models enable the measurement of additional critical quantities essential for a comprehensive understanding of aortic stenosis (AS) and its treatments: we compute the blood residence time, enhancing precision and personalization in assessing the probability of thrombus formation within the aorta. This study represents a significant step towards integrating in silico technologies into real clinical contexts, providing a robust framework for improving AS diagnosis and the design of next-generation AV bioprostheses. KEY POINTS: Patient-specific fluid-structure interaction computational models of the aortic valve are developed for five patients in pre-transcatheter aortic valve replacement configuration. A synergistic approach involving in silico models and in vivo data is utilized, including computed tomography and 4D flow magnetic resonance imaging. A patient-specific calibration strategy is introduced to identify the aortic valve Young's modulus, leveraging in vivo flow-derived metrics in combination with patient-specific valve and aortic geometries. The computational models are validated against in vivo 4D flow measurements, demonstrating their ability to replicate flow dynamics accurately. The potential of computational models to cross-check and reduce noise in in vivo data is highlighted, providing additional critical physiological quantities for comprehensive aortic stenosis assessment, such as blood residence time, important for thrombus formation evaluation.

Hemostatic Sponge With Excellent Wet Tissue Adhesion Performance for Anticoagulant-Associated and Unsuturable Visceral Hemorrhage Management.

The management of uncontrolled hemorrhage in anticoagulant-associated patients and visceral trauma necessitates hemostatic agents that operate independently of classical coagulation pathways. Herein, we report a gelatin sponge patch by one-sided coating with N-hydroxysuccinimide (NHS) ester-functionalized poly (acrylic acid-co-N-succinimidyl acrylate) (PANS), which acts by formation of covalent and hydrogen bonding cross-links between polymer, blood proteins, gelatin, and tissue to seal the wound site and prevent hemorrhage during surgery. PANS exhibits robust lap-shear strength of up to 114.4 ± 8.7 kPa, enabling the PANS-GS composite to achieve effective wet-tissue adhesion, while macroporosity is preserved for rapid blood absorption. This dual-function design allows simultaneous physical sealing and platelet enrichment with reduced dependence on fibrin-mediated coagulation pathways. In rat hepatic laceration and femoral artery injury models, the composite sponge demonstrates superior hemostatic efficacy, with significant reductions in bleeding time and blood loss compared to clinically used sponges in both non-heparinized and systemically heparinized subjects. Critically, biocompatibility assessments reveal minimal cytotoxicity and hemolysis, while histopathological analysis indicates no significant increase in inflammatory response compared with commercial gelatin sponge. These results establish a coagulation-independent hemostatic strategy that integrates strong wet adhesion with preserved porosity, offering promise for managing anticoagulant-associated bleeding, visceral trauma, and complex battlefield injuries.

Transcatheter aortic valve replacement at metropolitan teaching hospitals among patients with heart failure.

INTRODUCTION: Heart failure is highly prevalent among patients undergoing transcatheter aortic valve replacement (TAVR). Prior literature well documents an increased risk of readmission in heart failure patients undergoing TAVR; however, data comparing clinical outcomes between heart failure with preserved ejection fraction (HFpEF) and heart failure with reduced ejection fraction (HFrEF) in this population remain limited. METHODS: We conducted a retrospective analysis using the National Readmissions Database (NRD) from 2016 to 2022. Patients undergoing TAVR at metropolitan teaching hospitals were identified and stratified into two cohorts: HFrEF and HFpEF. The primary outcome was the 30-day all-cause readmission rate. Secondary outcomes included in-hospital complications and all-cause in-hospital mortality. RESULTS: Among 120,199 patients undergoing TAVR, 16.25% had HFrEF and 83.75% had HFpEF. The HFrEF cohort had higher baseline comorbidities, including peripheral vascular disease, prior myocardial infarction, and chronic kidney disease. After adjusting for baseline comorbidities, the HFrEF cohort experienced higher rates of in-hospital complications, including mechanical circulatory support, cardiogenic shock, acute heart failure, extracorporeal membrane oxygenation, cardiopulmonary resuscitation, acute myocardial infarction, valvular complications, mechanical ventilation, intubation, and acute kidney injury, as well as higher in-hospital mortality. The 30-day all-cause readmission rate among survivors was also higher in the HFrEF cohort (11.29% vs. 9.74%; HR: 1.142, 95% CI: 1.127-1.156; p<0.001). CONCLUSION: HFrEF was associated with worse in-hospital and early post-discharge outcomes following TAVR compared with HFpEF. Further studies are warranted to identify targeted strategies to mitigate risk in this high-risk population.

Cardiac rehabilitation after transcatheter aortic valve implantation before, during and after the COVID-19 pandemic: a whole-population study.

BACKGROUND: Evidence on cardiac rehabilitation (CR) after transcatheter aortic valve implantation (TAVI) is limited. We examined CR participation across England before, during and after the COVID-19 pandemic, and its association with clinical outcomes. METHODS: This retrospective cohort study used whole-population electronic health records to evaluate characteristics and outcomes of all TAVI recipients in England (2018-2023), stratified by CR participation. The primary outcome was unplanned all-cause rehospitalisation. Secondary outcomes included all-cause mortality, heart failure (HF) rehospitalisation and non-cardiovascular rehospitalisation. Follow-up was up to 5 years, with a minimum of 12 months. Multivariable models adjusted for demographics, clinical factors and procedural complications. RESULTS: Among 24 925 TAVI recipients (56% male, mean age 81 years and 95% white ethnicity), only 1090 (4.4%) attended CR. CR rates dropped during the first COVID-19 lockdown (1.57 per 10 000 person-days) and recovered post pandemic (3.24). HF rehospitalisation rates per 10 000 person-days were similar between CR and non-CR groups (1.05 vs 1.02), while all-cause (4.49 vs 4.72), non-cardiovascular rehospitalisation (4.53 vs 4.82) and mortality rates (3.61 vs 3.84) were slightly lower among CR participants. After adjustment, CR was associated with lower risk of all-cause (HR 0.88, 95% CI 0.79 to 0.98; p=0.019) and non-cardiovascular rehospitalisation (HR 0.84, 95% CI 0.76 to 0.94; p=0.002); however, there was no evidence of an association between CR and HF rehospitalisation (HR 0.94, 95% CI 0.75 to 1.19; p=0.607) or mortality (HR 0.95, 95% CI 0.84 to 1.07; p=0.383). CONCLUSION: CR after TAVI declined during the first COVID-19 lockdown but rebounded quickly. CR was associated with lower all-cause and non-cardiovascular rehospitalisation but was not associated with lower HF rehospitalisation or mortality. More research is needed to confirm these clinical findings.

Utility of guide catheter extension and intravascular ultrasound to facilitate transcatheter device closure of aortic paravalvular leak.

Paravalvular leak (PVL) refers to the retrograde flow of blood through a channel between an implanted valve prosthesis and native cardiac tissue, due to the absence of an appropriate seal. Most PVLs are haemodynamically non-significant; however, large leaks can present with symptoms of heart failure and/or haemolysis, with impact on quality of life. In many patients, re-operation is associated with high risk and alternative treatments using transcatheter closure techniques have been applied. We present the case of a septuagenarian male who underwent aortic PVL closure facilitated by use of a guide catheter extension and intravascular ultrasound. This report illustrates that these adjunctive techniques, more commonly used in coronary angioplasty procedures, can be used to enable complex PVL closure.

Periprocedural evaluation of patients with BAV stenosis undergoing TAVR: a machine learning-based study.

BACKGROUND: Transcatheter aortic valve replacement (TAVR) has increasingly emerged as one of the primary treatments for patients with severe bicuspid aortic valve (BAV) stenosis. Nevertheless, these patients encounter multiple procedural challenges. OBJECTIVE: To develop a machine learning (ML) model for assessing the risk of periprocedural adverse events (PAEs) in TAVR population with BAV. METHODS: This multicentre study retrospectively enrolled 1266 patients with BAV stenosis. Clinical characteristics and imaging data of the patients were collected, and an ML prediction model was developed. PAE was collectively defined as all-cause death, disabling stroke, life-threatening haemorrhage, acute kidney injury (≥stage 3), major vascular complications, valve-related dysfunction necessitating reoperation and other major complications that occurred prior to discharge. RESULTS: The average age was 72.6±6.3 years, and 58.3% (n=738) of male. In the derivation dataset, five predictive factors were identified: Type 0 BAV, aortic root calcification volume, horizontal aorta, annular ellipticity and previous atrial fibrillation. A robust risk scoring model was thereby established (area under the curve=0.801 95% CI 0.768 to 0.832). A graded relationship was observed between the quartiles of the score and PAE (0.6%, 1.7%, 3.2% and 9.6%; overall p<0.001). A nomogram was constructed to enable calculation of individual scores and the corresponding PAE probabilities. Additionally, similar results were observed in the validation dataset. CONCLUSIONS: The ML model developed in this study could predict the PAEs occurrence of TAVR in patients with BAV stenosis. This is conducive to individualised procedural planning and in-hospital management.

Dynamic Organelle Remodeling in HIV-Associated Myocardial Disease: Mechanisms, Fibrotic Pathways, and Therapeutic Opportunities.

People with HIV experience a disproportionate burden of myocardial fibrosis and diastolic dysfunction that is not fully explained by traditional cardiovascular risk factors or systemic inflammation. Emerging evidence suggests that HIV-associated cardiomyopathy originates from persistent disturbances in cardiomyocyte homeostasis driven by chronic immune-metabolic stress. Metabolic dysregulation, antiretroviral-related toxicity, and residual inflammatory signaling converge at the cardiomyocyte organelle level, leading to mitochondrial dysfunction, endoplasmic reticulum stress, and impaired autophagy. These interrelated processes precede overt structural heart disease and promote progressive myocardial stiffening, despite effective viral suppression. Framing myocardial remodeling as a consequence of unresolved organelle stress highlights opportunities for earlier intervention, including aggressive management of metabolic risk factors, the use of established cardioprotective therapies with antifibrotic effects, and emerging strategies targeting mitochondrial and proteostatic pathways. This organelle-centered perspective supports prevention-focused approaches that combine accessible imaging modalities and circulating biomarkers to mitigate the long-term cardiovascular risk in people with HIV, particularly in resource-limited settings.

Impact of Supranormal LVEF After TAVI: Behavior, Mortality, and Cardiac Structure.

Background/Objectives: Left ventricular ejection fraction (LVEF) typically improves after transcatheter aortic valve implantation (TAVI) in patients with severe aortic stenosis (SAS). However, the clinical significance and prognosis of patients presenting with supranormal LVEF (≥65%) remain poorly defined. This study aims to describe LVEF behavior, its relationship with mortality, and its effect on cardiac structure in this specific subgroup. Methods: A retrospective observational study was conducted at Hospital Clínico San Carlos (2008-2019), including SAS patients with pre-procedural supranormal LVEF. Patients were classified into two groups: those whose LVEF normalized (55-65%) and those whose LVEF remained supranormal. Demographic, clinical, and echocardiographic variables were collected at baseline and one-year follow-up. The primary endpoint was all-cause mortality at two years. Results: Out of 101 analyzed patients (mean age 82.8 years, 71.2% women), 71 (70.3%) experienced LVEF normalization at one year. Two-year mortality was 10% in the normalized group and 9.8% in the non-variable group, showing no significant difference. Regarding geometric characteristics, a trend toward left ventricular mass regression was observed only in the LVEF-normalized group (Delta -10; p = 0.062 vs. -8.4; p = 0.197). History of bleeding was the only variable showing a trend toward worse prognosis (p = 0.064). Conclusions: LVEF behavior one year after TAVI in patients with baseline supranormal function tends toward normalization. This change is not associated with differences in two-year mortality but is linked to a trend toward beneficial reverse cardiac remodeling.

Preprocedural Systemic Immune-Inflammation Index as a marker of risk for major adverse cardiac events and stroke after transcatheter aortic valve implantation.

BACKGROUND: The Systemic Immune-Inflammation Index (SII), calculated as neutrophils × platelets / lymphocytes, reflects the interplay between systemic inflammation and immune status. Its prognostic relevance in patients undergoing transcatheter aortic valve implantation (TAVI) remains poorly understood. AIM: To evaluate the prognostic significance of preprocedural SII in patients undergoing TAVI. METHODS: This retrospective cohort study included 1822 patients undergoing TAVI for severe aortic stenosis between 2014 and 2023 at two TAVI centers in Germany. Patients were divided into derivation and validation cohorts. Preprocedural SII was calculated from differential blood counts. In the derivation cohort, patients were stratified into tertiles based on preprocedural SII. Using receiver operating characteristics (ROC) analysis an optimized cut-off value for the validation cohort was identified to stratify patients into high- and low-risk groups. A generalized linear model (GLM) was used to identify clinical predictors of SII. RESULTS: In the derivation cohort, multivariate analysis showed that SII was independently associated with both major adverse cardiovascular events (MACE) (hazard ration [HR]: 1.0001 [1.00001; 1.00002], p = 0.020) and stroke (HR: 1.0003 [1.00002; 1.00004], p < 0.001). In the GLM, SII positively correlated with age (p = 0.013) and C-reactive protein (p < 0.001), and inversely with mean aortic gradient (p = 0.022) and hemoglobin (p = 0.011). In the external validation cohort, high risk patients (cut-off > 1204) showed an increased risk for one-year all-cause mortality (HR: 2.19 [1.59; 3.02], p < 0.001). CONCLUSION: Higher preprocedural SII was independently associated with increase rates of MACE and stroke at one-year following TAVI. A SII cut-off of 1204 effectively stratifies patients into high- and low-risk groups and may provide additional value for preprocedural risk stratification.

Anesthesia Type and Outcomes After Transfemoral TAVI: A Time-Sensitive Comparative Analysis.

Background: The optimal anesthesia strategy for transfemoral transcatheter aortic valve implantation (TAVI) remains uncertain. We evaluated the impact of local anesthesia, conscious sedation, and general anesthesia on early and long-term outcomes after TAVI. Methods: This single-center cohort included 401 patients undergoing transfemoral TAVI with local anesthesia (LA, n = 77), conscious sedation (CS, n = 147), or general anesthesia (GA, n = 177). Outcomes were assessed using hierarchical win-ratio analysis prioritizing mortality over major adverse cardiovascular and cerebrovascular events (MACCE), supported by Kaplan-Meier and restricted mean survival time analyses. Sensitivity analyses using inverse probability of treatment weighting (IPTW) were performed to account for baseline differences between groups. Results: Baseline comorbidities were broadly comparable, although GA patients had higher-risk anatomical and procedural features. In unadjusted win-ratio analyses, LA showed a significant advantage over GA at 0-6 months (win ratio [WR] 1.79; 95% CI 1.10-2.93; p = 0.020). After multivariable adjustment, LA remained superior to GA at 6-12 and 12-24 months (adjusted WR 1.67 and 1.56, both p < 0.05). One-year mortality differed significantly among groups (p = 0.012). RMST analysis demonstrated a cumulative survival advantage for LA versus GA, reaching 6.6 months at 60 months. MACCE-free survival was largely comparable across strategies. However, in IPTW-weighted analyses, anesthesia type was not independently associated with mortality or MACCE. Conclusions: Minimally invasive anesthesia strategies were associated with more favorable early survival patterns after transfemoral TAVI in primary analyses. However, after adjustment for baseline differences using IPTW, anesthesia type was not independently associated with mortality or MACCE. These findings suggest that apparent outcome differences may partly reflect underlying patient risk profiles rather than a purely causal effect of anesthesia strategy.

Acute Pulmonary Congestion Secondary to Left Ventricular Outflow Tract Obstruction Following Transcatheter Aortic Valve Implantation in Severe Left Ventricular Hypertrophy: A Case Report.

Transcatheter aortic valve implantation (TAVI) may be associated with dynamic hemodynamic complications in patients with marked left ventricular hypertrophy. We report a rare case of acute pulmonary congestion caused by TAVI-induced left ventricular outflow tract obstruction with systolic anterior motion, severe mitral regurgitation, and markedly elevated left ventricular end-diastolic pressure. An 88-year-old woman developed severe hypotension and persistent systolic anterior motion immediately after TAVI, with a left ventricular end-diastolic pressure (LVEDP) of 35 mm Hg. Despite transient stabilization, pulmonary congestion occurred after extubation, requiring reintubation. This case underscores the importance of cautious postoperative management in high-risk patients.

Permanent Pacemaker Implantation Following Transcatheter Aortic Valve Replacement: Incidence, Predictors, and Association With Reduced Ischemic Stroke Risk.

BACKGROUND: Development of conduction abnormalities requiring pacing after transcatheter aortic valve replacement (TAVR) is relatively common. The effects of post-TAVR permanent pacemaker (PPM) implantation on mortality, ischemic stroke, and cardiovascular outcomes remain incompletely characterized. AIMS: To evaluate the incidence, predictors, and cardiovascular outcomes of post-TAVR permanent pacemaker implantation, including its association with 1-year ischemic stroke risk. METHODS: Adults undergoing TAVR (2008-2019; n = 1101) were evaluated. Patients with prior PPM (n = 104) and/or valve-in-valve or redo TAVR (n = 11) were excluded. PPM placement was identified post-indexed TAVR admission based on procedure codes, including both in-hospital and post-discharge implantations. Primary outcomes included 1-year mortality, major adverse cardiovascular events (MACE), myocardial infarction (MI), and ischemic stroke. Multivariate logistic regression was performed to identify independent predictors of 1-year ischemic stroke. RESULTS: Within the TAVR cohort (N = 1101), 158 patients (14.4%) received PPM within 1-year, including 135 (12.3%) in-hospital and 23 post-discharge. PPM was not associated with a significant difference in 1-year mortality (15.8% vs. 14.7%, p = 0.816) or 1-year MACE (20.9% vs. 21.0%, p = 1.000). However, PPM was associated with significantly lower ischemic stroke rate at 1 year (1.3% vs. 4.8%, p = 0.044). In multivariate analysis adjusting for age, sex, and comorbidities, PPM was associated with 77% lower risk of 1-year ischemic stroke (adjusted OR 0.234, 95% CI 0.056-0.977, p = 0.046). Late PPM implantation (> 3 days) was associated with numerically higher 1-year mortality (30.0% vs. 14.3%, p = 0.647) and MACE (36.7% vs. 17.1%, p = 0.119) compared to early implantation, though these outcomes did not reach statistical significance. CONCLUSION: PPM after TAVR was not associated with increased mortality or MACE but was independently associated with significantly lower ischemic stroke risk. Late PPM implantation showed a trend toward worse outcomes. These findings suggest that appropriately indicated PPM may confer cerebrovascular protection, and early implantation when indicated may be preferable. These findings warrant further validation in prospective studies.

FROM COST CONTAINMENT TO VALUE CREATION: INTEGRATING PATIENT-REPORTED OUTCOMES IN CARDIOLOGY REIMBURSEMENT FRAMEWORKS-THE PARADIGM OF SELECTED EUROPEAN COUNTRIES.

AIM: Hospital reimbursement through Diagnosis-Related Groups (DRGs) is the dominant global model for enhancing cost containment and transparency. In cardiology, a field defined by rapid technological innovation and complex long-term outcomes, the DRG model faces a critical test: rewarding patient-centered value over procedural volume. The integration of Patient-Reported Outcome Measures (PROMs) represents the most significant evolution towards aligning reimbursement with measurable clinical and functional value. While Greece introduced its KEN-DRG framework in 2013, its potential has been hampered by static tariff calibration and a notable absence of outcome-linked payments. This narrative review aims to synthesize international evidence from leading DRG systems and propose a strategic roadmap for reform. METHODS: This study was designed as a comprehensive narrative review, an approach chosen to synthesise the heterogeneous and multidisciplinary body of evidence spanning clinical cardiology, health economics, public health policy, and health information technology. To ensure methodological rigour and transparency, the review process was guided by the principles outlined in the Scale for the Assessment of Narrative Review Articles (SANRA). A structured literature search was conducted using a systematic approach adapted for narrative reviews, following PRISMA guidelines. RESULTS: The study revealed that while DRGs effectively reduce length of stay, cost misalignment persists for high-complexity interventions such as Transcatheter Aortic Valve Implantation (TAVI). Our findings showed that advanced healthcare systems in Sweden, Ger-many, and Australia are already leveraging PROMs to bridge this gap, linking funding to demonstrable improvements in patient well-being. CONCLUSION: The study concludes that for Greece and similar systems, the integration of PROMs is an urgent necessity for achieving equitable, high-quality cardiac care. Key policy recommendations include the establishment of a national PROM registry, institutionalizing dynamic annual tariff recalibration, and enhancing coder certification, supported by modern digital auditing tools.

Prognostic value of myocardial work indices measured on echocardiography in patients with aortic stenosis undergoing transcatheter aortic valve replacement: A systematic review and meta-analysis.

BACKGROUND & OBJECTIVE: Myocardial work (MW) indices offer an afterload-adjusted assessment of left ventricular (LV) function and may improve risk stratification in patients with severe aortic stenosis (AS) undergoing transcatheter aortic valve replacement (TAVR). This systematic review and meta-analysis aimed to evaluate the prognostic significance of MW indices, global work index (GWI), global constructive work (GCW), global wasted work (GWW), and global work efficiency (GWE), in patients with severe AS undergoing TAVR. METHODOLOGY: PubMed, Embase, Web of Science, and Scopus were searched from inception to 26 November 2025 for studies assessing prognostic value of MW indices in TAVR-treated AS patients. Data were synthesised qualitatively, and a random-effects meta-analysis was performed when at least three studies reported comparable effect estimates. RESULTS: Five cohort studies met the inclusion criteria. Across studies, GWI consistently demonstrated strong prognostic performance. Lower post-TAVR GWI predicted mortality in multiple cohorts, with thresholds ranging from 1,095 to 1,234 mmHg% and area-under-the-curve values up to 0.71. Pooled analysis confirmed that higher GWI was associated with reduced mortality (HR: 0.94 95% CI: 0.90, 0.98 I2=68% p=0.004). GCW showed modest prognostic value, whereas GWW was not independently predictive. GWE was a significant predictor in select studies, but mostly in univariate models. CONCLUSION: Limited evidence shows that MW indices, especially GWI, may provide meaningful prognostic information in AS patients undergoing TAVR. Further studies are needed to improve the evidence. Registration No.: PROSPERO database (CRD420251238182).

Acute Stanford Type A Aortic Dissection After Transcatheter Aortic Valve Implantation Necessitating the Bentall Procedure: A Case Report.

An 80-year-old female with a history of sarcoidosis, dyslipidemia, hypertension, and permanent pacemaker implantation for complete atrioventricular block, presented with severe calcified aortic stenosis, corresponding to New York Heart Association Class II-III heart failure. The patient subsequently underwent elective transcatheter aortic valve implantation (TAVI) using a self-expandable transcatheter heart valve. After valve deployment, transesophageal echocardiography revealed a flap in the ascending aorta. Contrast-enhanced computed tomography (CECT) confirmed the diagnosis of Stanford Type A acute aortic dissection, and emergency surgery was indicated based on the presumed injury to the sinus of Valsalva caused by pop-out and recapture maneuvers during TAVI. Intra-operative findings revealed a transverse intimal tear extending across the right coronary and non-coronary cusps, necessitating aortic root replacement (Bentall procedure) and concomitant coronary artery bypass grafting to the right coronary artery.

Association of Comorbidity Burden With In-Hospital Mortality in Transcatheter Aortic Valve Replacement Patients With Coexisting Malignancy in the United States: A Retrospective Cohort Study.

Background Patients with malignancy undergoing transcatheter aortic valve replacement (TAVR) are a growing, high-risk group. The impact of overall comorbidity burden beyond malignancy itself on outcomes is unclear. Objectives To evaluate the association between comorbidity burden (Elixhauser Comorbidity Index, excluding malignancy) and in-hospital mortality in TAVR patients with coexisting malignancy, stratified by malignancy type and disease activity. Methods Using the 2022 National Inpatient Sample, we identified TAVR hospitalizations with coexisting malignancy. Malignancies were classified as solid or hematologic; active disease was defined by chemotherapy, radiation, or metastatic codes. Comorbidity burden was stratified as low, moderate, or high. The primary outcome was in-hospital mortality. Multivariable logistic regression adjusted for patient, hospital, and malignancy-specific factors. Results Among 2,364 hospitalizations (weighted n=11,820 nationally; mean age 77.4 years; 44.2% female), solid tumors accounted for 87.6% of the cases and hematologic malignancies for 12.4%. Active malignancy was present in 34.2% overall (32.8% solid, 44.6% hematologic). High comorbidity burden was seen in 38.6% of the patients. Overall, in-hospital mortality was 3.2%, rising from 1.1% (low burden) to 5.4% (high burden). On adjusted analysis, high comorbidity burden, active malignancy, hematologic malignancy, metastatic disease, and nonelective admission were independent predictors of mortality. Conclusions In TAVR patients with malignancy, higher comorbidity burden is independently associated with increased in-hospital mortality. Comprehensive comorbidity assessment should inform preprocedural risk stratification.

Cerebral Embolic Protection Devices (CEPDs) During Transcatheter Aortic Valve Implantation (TAVI): A Meta-Analysis of Randomized Controlled Trials.

AIMS: Transcatheter aortic valve implantation (TAVI) is associated with procedure-related stroke. Cerebral embolic protection devices (CEPDs) are designed to reduce the risk of embolic debris reaching the brain; however, the evidence supporting their efficacy remains controversial. We aim to evaluate the efficacy and safety of CEPDs in patients undergoing TAVI. METHODS: Major databases were systematically searched up to April 2025. Only randomized controlled trials (RCTs) were included and critically appraised using the Cochrane Risk of Bias (ROB-2) tool. We calculated risk ratios (RRs) with the 95% confidence intervals for the outcomes, and trial sequential analysis (TSA) was conducted to reduce the risk of false-positive results due to random errors. RESULTS: Eight RCTs (11,589 patients) were analyzed. No significant difference was observed in overall stroke incidence between CEPD and control groups (0.92 (95% CI: 0.75-1.14; p = 0.40, I2 = 0%), including disabling and non-disabling strokes. Device-specific analyses showed a non-significant reduction in disabling stroke with the Sentinel device. All-cause mortality, transient ischemic attacks, bleeding, acute kidney injury, delirium, and pacemaker implantation rates were similar between groups. CEPD use was linked to a transient improvement in cognitive function (MoCA scores) at 2-5 days post-TAVI, but this effect was not sustained at later follow-ups. TSA indicated that current evidence is insufficient to definitively refute CEPD efficacy. CONCLUSION: CEPDs show no significant reduction in overall, disabling, or non-disabling stroke, nor in all-cause mortality post-TAVI. TRIAL REGISTRATION: This meta-analysis was registered on PROSPERO. No.: CRD420251026208.

Improving Transcatheter Aortic Valve Implantation Efficiency and Outcomes in the Canadian Healthcare Environment.

BACKGROUND: With increased demand for transcatheter aortic valve implantation (TAVI), comprehensive strategies are required to improve procedural efficiency and increase case loads at Canadian TAVI programs. METHODS: Time-efficiency measures were implemented at the preprocedure, anesthesia, procedural, and postprocedural stages at our centre between 2019 to 2024, using a 1-day-per-week strategy in a hybrid operating room. We analyzed trends in case volumes and procedural times during the study period. Patients were stratified based on whether their procedure was performed on days with a high (HCV) vs a low case volume (LCV), and differences in early clinical outcomes were analyzed. Effects of specific efficiency measures on procedural times were also analyzed. RESULTS: A total of 1019 patients were analyzed. We noted significant increases in TAVI volumes (+0.51 cases per year, P < 0.0001) and a decrease in total operating room time (-10.2 minutes per year, P < 0.0001) during the study period. The time savings were driven most strongly by decreases in anesthesia and procedure times. No significant differences occurred between the HCV vs LCV groups in terms of in-hospital mortality (0.7% vs 1.8%, P = 0.20), stroke and/or transient ischemic attack (2.4% vs 2.3%, P = 0.25), new pacemaker (9.0% vs 10.1%, P = 0.64), moderate-severe paravalvular leak (2.9% vs 5.2%, P = 0.25), but increased bleeding occurred in the LCV group (3.0% vs 6.4%, P = 0.028). Multivariable linear regression showed that use of conscious sedation, left ventricular pacing, and hybrid closure strategies significantly reduced total TAVI times. CONCLUSIONS: Our comprehensive, innovative time-efficiency strategies have improved TAVI efficiency significantly while preserving good outcomes and not requiring significant additional resources.

Exercise-Induced Left Bundle Branch Block in a Patient With Syncope: A Case Report.

Exercise-induced left bundle branch block (EI-LBBB) is a rare phenomenon, particularly in patients without structural heart disease. Its pathophysiology remains poorly understood and there are no defined treatment protocols. We report a 77-year-old man with a history of syncope who developed EI-LBBB during a cardiac stress test, with transient electrocardiographic changes that resolved at rest. Coronary angiography revealed only a mild-moderate (approximately 25%-50%) proximal left anterior descending artery stenosis, and the rest of his cardiac evaluation was unremarkable. The patient was commenced on an aerobic exercise program, and reported symptomatic improvement on follow-up. Although EI-LBBB is often linked to underlying structural heart disease and coronary artery disease, it can occur in patients with normal cardiac structure. This report summarizes an approach to evaluation and follow-up of EI-LBBB and reviews management strategies described in the literature, including exercise training in selected patients.

Heyde-Like Syndrome Manifesting as Massive Gastrointestinal Bleeding After TAVI in an Elderly Patient With Gastric Angiodysplasia.

Gastrointestinal bleeding due to angiodysplasia in elderly patients with severe aortic stenosis may be overlooked outside of cardiology. Clinicians should remain vigilant, especially in TAVI candidates presenting with unexplained anemia, as early recognition can significantly impact management and outcomes.

Clinical Utility of Urinary Liver-Type Fatty Acid-Binding Protein Measured via Point-of-Care Testing in Acute Kidney Injury After Transcatheter Aortic Valve Implantation.

AIM: This study evaluated the clinical usefulness of urinary liver-type fatty acid-binding protein (L-FABP) measured via point-of-care testing (POCT) based on immunochromatography for the early prediction of acute kidney injury (AKI) following transcatheter aortic valve implantation (TAVI). METHODS: This retrospective observational study was conducted at a single-centre university hospital and included 186 patients who underwent TAVI. The onset of AKI was defined according to the Acute Kidney Injury Network classification. Urine samples were collected preoperatively, immediately after surgery, 4 h postoperatively and on postoperative days 1, 2 and 3 to measure urinary L-FABP using POCT. RESULTS: Of the 186 patients who underwent TAVI, 24 (12.9%) developed AKI postoperatively. Patients with AKI exhibited a decreased left ventricular ejection fraction, the co-occurrence of both hypertension and advanced-stage chronic kidney disease and a longer hospital stay. During the observational period, patients with AKI were found to have significantly higher urinary L-FABP levels than those without. Preoperative urinary L-FABP showed the highest predictive performance for AKI onset, with an area under the receiver operating characteristic curve of 0.74 (cutoff value, 4.24 ng/mL; sensitivity, 0.61; specificity, 0.82; diagnostic accuracy, 0.79). Elevated urinary L-FABP levels above the cutoff value in the early phase of the perioperative period independently predicted AKI onset after adjusting for ejection fraction and the presence of renal dysfunction in the multivariable logistic regression analysis. CONCLUSION: This study indicated for the first time that urinary L-FABP levels measured via POCT were independently associated with the development of AKI following TAVI, indicating potential utility for early risk assessment.

Phase Angle Shows a Negative Correlation With Serum GDF-15 Concentrations in Hospitalized Patients With Cardiovascular Disease.

BACKGROUND: Growth differentiation factor (GDF)-15 is associated with various conditions such as cardiovascular disease, inflammation, and chronic kidney disease. Phase angle (PhA) reflects cellular health and nutritional status. However, the relationship between serum GDF-15 concentrations and PhA is unclear. METHODS: Serum GDF-15 concentrations in patients with heart failure (n = 91), aortic stenosis patients undergoing aortic valve replacement (AVR) or transcatheter aortic valve implantation (TAVI) (n = 48), and healthy older individuals (n = 73) were measured via enzyme-linked immunosorbent assay. PhA was measured with an impedance-based body composition analyzer. RESULTS: PhA showed a negative correlation with serum GDF-15 concentrations in total subjects. PhA showed a positive correlation with serum albumin (Alb) levels, hemoglobin (Hb) levels, estimated glomerular filtration rate (eGFR), and grip strength, and serum GDF-15 concentrations showed a negative correlation with serum Alb levels, Hb levels, eGFR, and grip strength. In multivariate regression analysis, after adjusting for age, PhA reflected the association with grip strength. For the presence or absence of muscle weakness measured by handgrip strength, in men, PhA had a cutoff value of 4.35 and an area under the curve (AUC) of 0.857, while GDF-15 had a cutoff value of 2012 pg/mL and an AUC of 0.773. In women, PhA had a cutoff value of 4.25 and an AUC of 0.804, while GDF-15 had a cutoff value of 1109 pg/mL and an AUC of 0.764. CONCLUSION: PhA showed a negative correlation with serum GDF-15 concentrations in hospitalized patients with cardiovascular disease. Both PhA and serum GDF-15 concentrations might be considered as a biomarker of sarcopenia or cachexia.

An Unusual Case of Ischemic Stroke.

Left atrial appendage closure (LAAC) represents an alternative to anticoagulation therapy for stroke prevention in selected patients with atrial fibrillation (AF). Mitral valve repair with the MitraClip system is nowadays a specific therapy for patients who are not eligible for surgery. G. G. 71 years old, F, admitted to the neurology ward of our hospital with a diagnosis of ischemic stroke. Recent discharge from the cardiology unit after mitral valve repair with the MitraClip system and LAAC with the Amplatzer device. A transoesophageal echocardiography (TEE) was performed. The TEE showed good position of the LAAC device with no leaks and the presence of a thrombotic formation (0.9 cm × 0.7 cm) on the atrial surface of the LAAC device [Figure 1a arrows and Video 1]. Anticoagulant therapy with LMWH 6000 UI X2 was started. A follow-up TEE was performed 1 month postdischarge, showing the complete resolution of the thrombotic formation [Figure 1b and Video 2]. LAAC is a safe and effective procedure with a low rate of complications. Device-related thrombosis occurred in a minority of cases (2.8%). Combined MitraClip and LAAC is deemed feasible and safe, even though there are no large specific trials on this topic. In our case, we assume that the rapid reduction in mitral regurgitation and the rapid increase of aortic valve gradient, even if of little entity, could have caused a prothrombotic state that has caused the LAA device thrombosis. a device-related thrombosis must be taken into account in patients presenting with ischemic stroke without a clear cause.

Polymorphic ventricular tachycardia with mutation in KCNJ2: case report.

Polymorphic ventricular tachycardia (VT), particularly in the absence of structural heart disease, has a strong genetic foundation primarily rooted in mutations affecting cardiac ion channels and associated regulatory proteins. Here, we report two patients with polymorphic VT harboring potassium channel subfamily J member 2 (KCNJ2) gene mutations. The first case is a 13-year-old girl presenting with periodic paralysis, polymorphic VT, and a prolonged QT interval. She was sequentially treated with metoprolol, verapamil, amiodarone, moricizine, and mexiletine, along with three radiofrequency catheter ablation sessions, but the therapeutic effect was unsatisfactory. Genetic testing revealed a de novo c.406T > C (p.S136P) variant in the KCNJ2 gene. During a 10-year follow-up period, she never experienced syncope. The second patient is a 5-year-old boy presenting with thumb adduction, polymorphic VT, and a prolonged QT interval. He was treated sequentially with metoprolol and flecainide, and his premature ventricular contraction burden decreased significantly after flecainide therapy. Genetic testing identified a de novo c.652C > T (p.A218T) variant in the KCNJ2 gene. This case report updates our understanding of KCNJ2 gene mutations. Arrhythmias due to KCNJ2 mutations respond poorly to antiarrhythmic drugs, but flecainide may be a promising therapeutic option. Arrhythmias associated with KCNJ2 mutations tend to have a more benign clinical course, but identifying mutation carriers at risk of life-threatening arrhythmias remains challenging.

Postpartum Venous Thromboembolism: Altitudinal Gradients, Decadal Trends, and PE-Specific Risk Profiling in Highland Populations.

BACKGROUND: This study primarily analyzed differences in venous thromboembolism (VTE) characteristics across altitudes and their temporal trends during the puerperium. Additionally, it identified independent risk factors for postpartum pulmonary embolism (PE). METHODS: This retrospective study reviewed all postpartum VTE cases at People's Hospital of Xizang Autonomous Region between 2015 and 2024. RESULTS: This cohort study of 172 postpartum women (median age 31 [IQR 26-36]) compared high-altitude (HA, n = 109) and very high-altitude (VHA, n = 63) groups. PE proportion was significantly higher in VHA vs. HA ( p = 0.033). VHA subjects also showed significant elevated preterm delivery (p = 0.033) and ≥ 3 deliveries (p < 0.001). Joinpoint regression (2015-2024) revealed biphasic trends: significant early-phase escalations in VTE (APC = 18.05%) and deep vein thrombosis (DVT) (APC = 19.66%) during 2015-2022 (p < 0.05), followed by clinically relevant (though statistically nonsignificant) late-phase reductions. PE proportion demonstrated a significant overall increase (APC = 18.77%, p < 0.05). In multivariate analysis, four independent predictors significantly increased PE risk: altitude gradient (OR 1.035, p < 0.001), multiparity (OR 2.548, p = 0.004), hypertension or eclampsia (OR 1.797, p = 0.001), and structural heart disease (OR 1.988, p < 0.001). CONCLUSION: This decade-long analysis (2015-2024) revealed significant altitudinal gradients in postpartum VTE. Clinically significant escalation of postpartum VTE burden in high-altitude populations warrants urgent intervention. Integrated multiparity management and enhanced comorbidity control are critical future initiatives for resolving key perinatal thrombotic risk bottlenecks.

Valvular Heart Disease in Heart Failure with Preserved Ejection Fraction.

Heart failure with preserved ejection fraction (HFpEF) is associated with reduced functional capacity and quality of life, as well as with high rates of heart failure hospitalisation and mortality. Valvular heart disease (VHD) is frequently encountered in patients with HFpEF, and both conditions share common risk factors, such as age, hypertension, diabetes and coronary artery disease, which may contribute to their shared pathogenesis and progression. With recent advances in percutaneous therapies for VHD and an improved understanding of HFpEF, there is a growing interest in the relationship between VHD and HFpEF. In this review, we provide an overview of the pathophysiology, epidemiology and management strategies of tricuspid regurgitation, mitral regurgitation, aortic stenosis and aortic regurgitation in the setting of HFpEF.

Computational modelling for personalized transcatheter aortic valve replacement planning: a systematic review of complications and decision support.

Patient-specific digital simulation is emerging as a tool to support personalized planning of transcatheter aortic valve replacement (TAVR), particularly as the procedure expands to younger, lower-risk patients, and more complex anatomies. Despite procedural advances, complications such as paravalvular leak, conduction disturbances, coronary obstruction, and aortic injury remain important determinants of outcome. Current pre-procedural planning relies heavily on computed tomography-based anatomical assessment, which is indispensable but largely static and cannot fully capture dynamic device-tissue interactions, and haemodynamic mechanisms underlying many procedural events. Computational modelling derived from patient-specific imaging can extend this assessment by simulating valve deployment, device-tissue contact, and flow, offering mechanistic insight and potential support for individualized procedural decision-making. This systematic review evaluates modelling approaches addressing TAVR complications and procedural planning, including high-risk scenarios such as bicuspid valves and valve-in-valve procedures. Across the literature, modelling enables patient-specific simulations and exploration of procedural strategies that may reduce complication risk. However, clinical translation remains limited by small study populations, heterogeneous methodologies, limited patient-specific validation, and lack of integration into routine workflows. Future progress will require validation against clinically meaningful endpoints, scalable digital infrastructure, and close collaboration between clinicians and engineers to incorporate simulation outputs into routine Heart Team decision-making.

Interplay between parathyroid hormone concentration and valvular and aortic calcifications.

INTRODUCTION: Recently, a relationship between hyperparathyroidism and cardiovascular disorders has been highlighted. The current study aimed to identify a potential relationship between parathyroid hormone (PTH) and valvular calcification performance. A secondary aim was to evaluate the potential association between PTH concentration and post-procedural outcomes after transcatheter aortic valve implantation (TAVI). MATERIAL AND METHODS: Patients with severe symptomatic aortic stenosis were evaluated for study eligibility. Demographics, clinical data, and blood samples were collected. Pre-procedurally, echocardiography and computed tomography (CT) were performed. Quantitative evaluation of calcific tissue was conducted over the three regions of interest - ascending aorta, aortic and mitral valves - using semiautomated software. RESULTS: The final study group comprised 89 patients (50 females, median (Q1-3) age of 77 (72-82) years. Increased PTH concentration was associated with a higher peak aortic gradient (p = 0.024), but not with mean aortic gradient or mitral annular calcification occurrence. CT analysis revealed an association between increased PTH and mean calcific tissue attenuation in the mitral (p = 0.004) and aortic valves (p < 0.001) and ascending aorta (p < 0.001) but no relationship with calcium volume in the regions of interest. Increased PTH did not differ between patients with and without paravalvular leak or new pacemaker implantation. CONCLUSIONS: Increased PTH concentration is associated with calcific tissue attenuation but not calcium volume, suggesting that PTH may influence the degree of calcium accumulation in degenerated regions. PTH could potentially serve as a biomarker of calcific loading in valvular heart disease. However, PTH concentration does not appear to be associated with the rate of complications following TAVI.

Sudden cardiac arrest in young adults: A comprehensive systematic review of epidemiology, aetiology and preventive strategies.

BACKGROUND: Sudden cardiac arrest (SCA) in young adults (18-40 years) is rare but devastating, often occurring without prior symptoms. It often occurs in the absence of preceding symptoms or known structural heart disease. A comprehensive and systematic evaluation of its multifactorial aetiology, diagnostic challenges and preventive strategies is fundamental to reducing morbidity and mortality in this population. OBJECTIVE: This systematic review aims to comprehensively evaluate the epidemiology, underlying aetiologies, associated risk factors, diagnostic approaches and preventive strategies for SCA in adults aged 18-40 years. METHODS: PubMed, Scopus, Embase, Web of Science and Google Scholar were searched from January 2015 to June 2025. Eligible studies examined aetiologic mechanisms, screening strategies, clinical outcomes or public health interventions targeting the prevention, detection or management of SCA in individuals aged 18-40 years. Study quality was assessed using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 checklist, the Risk of Bias in Nonrandomized Studies of Exposures (ROBINS-E), A Measurement Tool to Assess Systematic Reviews 2 (AMSTAR 2) and the Newcastle-Ottawa Scale (NOS). RESULTS: Of 3,000 records identified through the literature search, 55 studies met the inclusion criteria. The reported incidence of SCA among young adults ranged from 1 to 2 per 100,000 person-years in Western countries, with higher incidence rates observed in Asian populations. Structural cardiomyopathies were the predominant aetiologies, most notably hypertrophic cardiomyopathy and arrhythmogenic right ventricular cardiomyopathy. These were followed by inherited channelopathies, including long QT syndrome, Brugada syndrome and catecholaminergic polymorphic ventricular tachycardia, as well as acquired conditions such as myocarditis and substance-related cardiac toxicity involving cocaine, amphetamines and anabolic steroids. Additional risk factors included systemic comorbidities, particularly sarcoidosis, chronic kidney disease and autonomic dysfunction. Diagnostic evaluation most frequently incorporated electrocardiography, transthoracic echocardiography, cardiac magnetic resonance imaging and genetic testing. Survival following out-of-hospital cardiac arrest was significantly improved in settings with prompt bystander cardiopulmonary resuscitation, widespread availability of automated external defibrillators and the implementation of community-based education initiatives. CONCLUSION: Targeted screening strategies, improved access to advanced diagnostic modalities and population-level community interventions are essential for reducing the burden of SCA among young adult individuals. Further prospective research is warranted to enhance risk stratification and optimize prevention strategies in this high-impact population.

Persistent ST-segment elevation mimicking ST-elevation myocardial infarction.

ST-segment elevation on electrocardiography is classically associated with acute myocardial infarction and often prompts urgent invasive evaluation. However, non-ischemic causes may complicate diagnostic decision-making, particularly in elderly patients with acute non-cardiac illnesses. We report a 95-year-old woman admitted with COVID-19-associated pneumonia and aspiration pneumonia, whose admission electrocardiogram demonstrated ST-segment elevation with T-wave inversion in the lateral precordial leads, mimicking ST-elevation myocardial infarction. She had no chest pain, no elevation of cardiac biomarkers, and preserved left ventricular systolic function without regional wall motion abnormalities on echocardiography. Review of prior records revealed that similar electrocardiographic abnormalities had been consistently present for more than a decade. Serial imaging demonstrated no overt structural heart disease. However, the electrocardiographic pattern-localized and persistent ST-segment elevation with repolarization abnormalities-is most consistent with chronic localized myocardial remodeling, possibly related to unrecognized myocardial fibrosis. This case highlights the importance of integrating clinical presentation, biomarkers, and longitudinal electrocardiographic findings. Persistent ST-segment elevation does not always indicate acute coronary occlusion, but may reflect an underlying structural myocardial substrate not detectable by routine imaging.

Association between frailty and postoperative delirium after transcatheter aortic valve replacement: a meta-analysis.

BACKGROUND: Postoperative delirium (POD) is a common complication following transcatheter aortic valve replacement (TAVR) and is associated with adverse outcomes in older patients. Frailty, a multidimensional geriatric syndrome, has been increasingly recognized as a potential risk factor for POD. However, existing evidence remains inconsistent. This meta-analysis aimed to evaluate the association between frailty and POD after TAVR. METHODS: A systematic search of PubMed, Embase, and Web of Science was conducted from inception to January 22, 2026. Cohort studies evaluating the association between preprocedural frailty and POD after TAVR were included. Odds ratios (ORs) with 95% confidence intervals (CIs) were pooled using a random-effects model accounting for the influence of potential heterogeneity. RESULTS: Ten cohort studies involving 7,702 patients were included. Frailty was present in 2,062 (26.8%) patients, and 786 (10.2%) developed POD. Pooled analysis showed that frailty was significantly associated with an increased risk of POD after TAVR (OR: 2.17, 95% CI: 1.60-2.95; I2 = 55%). The association was stronger in studies with sample size ≥ 500 compared with < 500 (OR: 2.74 vs. 1.38; p for subgroup difference < 0.001). The effect estimates were consistent across subgroups stratified by study design, age, sex, frailty assessment methods, follow-up duration, analytic models, and study quality (all p for subgroup difference > 0.05). Notably, studies using CAM-ICU to diagnose POD showed a stronger association than those using DSM criteria or other methods (OR: 3.60 vs. 1.56 and 2.53; p = 0.006). Meta-regression identified sample size as a significant source of heterogeneity (p = 0.02). CONCLUSIONS: Frailty is associated with an increased risk of POD after TAVR. These findings highlight the importance of frailty assessment for perioperative risk stratification and support targeted strategies to prevent delirium in high-risk patients undergoing TAVR. SYSTEMATIC REVIEW REGISTRATION: https://www.crd.york.ac.uk/prospero/, identifier CRD420261352173.

A Case of Nonimmune Hydrops Fetalis With a Duct-Dependent Systemic Circulation and a Novel Mutation of Kabuki Syndrome.

INTRODUCTION: Nonimmune hydrops fetalis (NIHF) has numerous etiologies, the most common of which are cardiac anomalies and fetal infection. However, genetic disorders are also being increasingly recognized as a cause of NIHF. Here, we report a case of a neonate presenting with polyhydramnios, NIHF, structural heart disease, and diaphragmatic defect who was found to have a previously unreported mutation in the KMT2D gene. CASE PRESENTATION: A female neonate with antenatally detected NIHF was born at 35 weeks of gestation via cesarean section. At birth, she was noted to have dysmorphic features, scoliosis, and a single umbilical artery. Further investigations revealed a left-sided obstructive cardiac lesion and a right-sided Morgagni hernia. She required invasive ventilation, inotropes, and prostaglandin E1 for preductal coarctation of the aorta with hypoplastic left heart syndrome. Genetic analysis was warranted due to multiple anomalies in the neonate. Whole exome sequencing (WES) showed a previously unreported truncating mutation in the KM2TD gene, confirming the diagnosis of Kabuki syndrome type 1. CONCLUSION: Kabuki syndrome is rare, and its presentation with hydrops is extremely rare. Our case presented with polyhydramnios, antenatal hydrops, hypoplastic left heart, right-sided Morgagni hernia, and scoliosis with a novel mutation, thus potentially expanding the genotype-phenotype spectrum of this syndrome. This case highlights that a pediatrician should have a high index of suspicion for inherited genetic syndromes in a case of nonimmune hydrops with multiple congenital anomalies. Genetic tests are valuable for identifying rare syndromes and novel mutations.

Revealing the Hidden Severity: A Case Report on Managing Complex Aortic Stenosis With TAVI.

Aortic stenosis (AS) is a progressive condition prevalent in older adults, with severity determined through clinical evaluation and imaging. However, diagnostic dilemmas arise when imaging results conflict with clinical symptoms. This report examines an 84-year-old male with chronic kidney disease, prior abdominal aortic aneurysm repair and other comorbidities, presenting with decompensated heart failure. Initial echocardiography findings suggested moderate AS, insufficient to qualify for transcatheter aortic valve implantation (TAVI) under national guidelines, despite clinical evidence of worsening heart failure. A multimodal diagnostic approach, incorporating Agatston scoring, dobutamine stress echocardiography (DSE), and invasive haemodynamics, was undertaken to resolve this discordance. DSE demonstrated persistent discordance between Doppler- and Simpson-derived flow estimates, whereas CT calcium scoring and left heart catheterisation ultimately confirmed severe AS, with an aortic valve area of 0.75 cm2. The patient underwent preoperative optimisation, including multidisciplinary team (MDT) input and targeted interventions to manage comorbidities and optimise haemodynamics. TAVI was performed successfully, resulting in significant improvements in symptoms, exercise tolerance and renal function. This case highlights the necessity of a multimodal diagnostic strategy when initial investigations do not align with clinical presentation, emphasising MDT collaboration and preoperative optimisation. It demonstrates how multimodality imaging can prevent underestimation of AS severity and support timely intervention in clinically complex patients.

AI-ECG for Echocardiography Triage in Structural Heart Disease: Evidence, Implementation, and Future Directions.

Structural heart disease (SHD), including left ventricular systolic dysfunction, valvular heart disease, hypertrophic cardiomyopathy, cardiac amyloidosis, and pulmonary hypertension, remains underdiagnosed despite the increasing availability of disease-modifying therapies. Echocardiography is the principal confirmatory test, but its broad use as a screening tool is constrained by imaging capacity, cost, and referral efficiency. This review evaluates artificial intelligence-enabled 12-lead electrocardiography (AI-ECG) as a pre-echocardiographic triage tool for SHD. We synthesize evidence across reduced left ventricular ejection fraction, valvular disease, hypertrophic cardiomyopathy, cardiac amyloidosis, pulmonary hypertension, and composite SHD models, and distinguish two intended-use orientations: safety-net screening, in which a positive AI-ECG result serves as an additive trigger for confirmatory evaluation, and gatekeeper triage, in which a negative or low-risk AI-ECG result may support deferring or de-prioritizing echocardiography in selected low-risk settings. Current evidence most strongly supports low-LVEF detection, where pragmatic randomized implementation and early economic data are available. Valvular and composite SHD models are promising for referral enrichment, whereas hypertrophic cardiomyopathy, cardiac amyloidosis, and pulmonary hypertension remain earlier or pathway-incomplete applications. We also review false-positive interpretation, stepwise confirmation with point-of-care ultrasound, threshold selection, workflow integration, equity, regulation, and health economics. Overall, AI-ECG is currently best positioned as an additive safety-net tool to improve case finding upstream of echocardiography. Gatekeeper use remains investigational and requires prospective pathway-level validation, calibration, and operational safeguards before routine imaging deferral can be justified.

Outcomes after using cerebral embolic protection devices during transcatheter aortic valve replacement: an updated meta-analysis.

BACKGROUND: Cerebral embolic protection (CEP) devices have been developed to reduce periprocedural embolization through transcatheter aortic valve replacement (TAVR), yet their clinical benefit remains uncertain. This study aimed to systematically evaluate the efficacy and safety of CEP devices during TAVR using evidence restricted to randomized controlled trials (RCTs). METHODS: We conducted a systematic review and meta-analysis following PRISMA guidelines. MEDLINE, Embase, Web of Science, Scopus, and Cochrane CENTRAL were searched through July 2025 for RCTs comparing CEP devices vs. no protection in patients undergoing TAVR. The primary outcome was the all-cause stroke. Random-effects model was applied for the primary analysis. RESULTS: Nine RCTs comprising 11,696 patients (6,000 patients in CEP, 5,696 patients in control) were analyzed. CEP use did not significantly reduce the overall risk of all-cause stroke (RR 0.92; 95% CI 0.73-1.14; p = 0.43). The results were consistent across different subgroups, either Sentinel (filter device) (RR 0.88; 95% CI 0.70-1.11; I2 = 0.00%) or TriGuard (deflection device) (RR 1.40; 95% CI 0.67-2.94; I2 = 0.00%) (Pinteraction = 0.50). Similarly, no significant differences between the two groups were observed for the risk of all-cause mortality, disabling stroke, non-disabling stroke, cardiovascular mortality, transient ischemic attack, major adverse cardiovascular and cerebrovascular events, major bleeding, major vascular complications, or acute kidney injury. CONCLUSIONS: Among patients undergoing TAVR, CEP devices could not reduce the risk of stroke compared with the control group. SYSTEMATIC REVIEW REGISTRATION: https://www.crd.york.ac.uk/PROSPERO/view/CRD420251114450, CRD420251114450.

Ablation Methods and Catheter Settings for Ventricular Tachycardia Ablation: A Bench to Bedside Review: Part 2.

Catheter ablation remains a cornerstone in the treatment of ventricular tachycardia (VT) in structural heart disease. Part 1 of this review focused on the principles and technical aspects of radiofrequency (RF) ablation. Part 2 explores alternative strategies designed to overcome the limitations of conventional RF, in particular, achieving transmurality in complex or deep intramuscular substrates. We critically evaluate the mechanisms, evidence and clinical applications of bipolar RF ablation, pulsed-field ablation (PFA), ultra-low-temperature cryoablation (ULTC) and venous ethanol and needle ablation. Despite the rapid expansion ofthe technological armamentarium, current clinical evidence remains limited. The data supporting long-term safety and durability are predominantly based on preclinical and small observational studies. We advocate for continued investigation into these specialised techniques to provide a more tailored, patient-specific approach to VT management.

Ablation Methods and Catheter Settings for Ventricular Tachycardia Ablation: A Bench to Bedside Review: Part 1.

Catheter ablation is the primary treatment for ventricular tachycardia (VT) in patients with structural heart disease. Unfortunately, its long-term success remains limited. Although mapping techniques have advanced considerably, optimal ablation indices remain essential but less well defined. This two-part comprehensive review bridges the gap between bench and bedside by evaluating methods, technologies, and VT-specific lesion parameters. Here, in part 1, we critically examined conventional and emerging techniques, including radiofrequency (RF), high-power short-duration ablation, temperature-controlled RF. In the accompanying paper, part 2, we focus on bipolar RF ablation, pulsed field ablation and ultra-low-temperature cryoablation, venous ethanol and needle ablation. Despite the growing set of tools available for VT operators, clinical data on the practical and safe creation of lesions remain scarce. The evidence supporting most of the techniques reviewed is limited. We emphasise the need for personalised ablation strategies based on substrate and myocardial anatomy and advocate for the development of future integrated, metric-driven technologies.

Case Report: Integrated cardiovascular and respiratory training as a novel therapeutic approach in a case of painful left bundle branch block.

BACKGROUND: Left bundle branch block (LBBB) is a heart rate (HR)-dependent cardiac conduction disorder that may occur in the absence of structural heart disease and can be associated with painful episodes. Evidence supporting exercise-based interventions in this setting is limited. We report the case of a 41-year-old woman with paroxysmal, painful LBBB, with onset occurring marginally above resting HR. METHODS: After a diagnostic evaluation demonstrating preserved biventricular function, absence of myocardial ischemia, and normal hemodynamic responses, a 10-month supervised training program was implemented in three sequential phases: (1) diaphragmatic breathing exercise; (2) aerobic exercise performed below the individual LBBB HR threshold; (3) interval and steady-state aerobic exercise prescribed according to individually determined ventilatory thresholds (VT1 and VT2). Resting HR, HR at LBBB onset, maximal oxygen consumption (V˙O2max), ventilatory thresholds, and their associated HRs were longitudinally assessed. RESULTS: After training, resting HR decreased by 15 bpm, while HR at LBBB onset increased by 50 bpm, markedly expanding the safe exertional window. V˙O2max improved progressively, together with upward shifts in VT1 and VT2, and reductions in corresponding HRs. Importantly, the patient reported resolution of LBBB-related pain during daily activities and even when LBBB was occasionally elicited at higher exercise intensities. CONCLUSIONS: This case suggests that a tailored respiratory and aerobic training program may safely improve cardiovascular efficiency, functional capacity, and symptom control in a patient with painful, HR-dependent LBBB. Individualized exercise training may represent a non-invasive adjunct or alternative to pharmacological or pacing strategies in selected patients.

Impact of iron deficiency on left ventricular noninvasive myocardial work indices in patients with severe aortic stenosis undergoing transcatheter aortic valve implantation.

BACKGROUND: Aortic stenosis (AS) increases left ventricular (LV) afterload and systolic pressure (LVSP). Left ventricular myocardial work (LVMW) enables early detection of LV dysfunction. Recent evidence suggests that ID may reduce LVMW parameters, raising the question of whether ID further impairs LV systolic performance in patients with AS undergoing transcatheter aortic valve implantation (TAVI). METHODS: We evaluated 100 patients with severe AS scheduled for TAVI between March 2021 and November 2022. All underwent ID screening according to the classic and novel ID definitions and echocardiographic assessment of LVMW before TAVI and at the 1-year follow-up. RESULTS: Elimination of AS was observed within the 1-year follow-up in the whole population. Despite stable ejection fraction (EF) and global longitudinal strain (GLS), LVMW indices such as global work index (GWI) and global constructive work (GCW) significantly decreased from baseline in the entire population. However, when comparing ID and non-ID patients after the procedure, a statistically significant decrease in GWI and GCW was noted at the 1-year follow-up only in the TSAT > 20% group, not in the TSAT < 20% group. We also noted a significant correlation between TSAT status and echocardiographic as well as LVMW indices. When the classic ID definition was used, all LVMW parameters changed similarly in both groups during follow-up. CONCLUSIONS: TAVI significantly influenced the majority of LVMW indices in the overall study population. Using the standard ID definition, ID had no impact on differences in LVMW indices. However, when defined by TSAT < 20%, patients with ID showed no significant post-TAVI changes in LVMW indices.

Changes of the QRS-T angle in Patients Undergoing Transcatheter Aortic Valve Implantation.

OBJECTIVE: This study aimed to investigate changes in the frontal QRST angle in patients who underwent transcatheter aortic valve implantation (TAVI). BACKGROUND: The QRS-T angle is a prognostic marker in several clinical settings. The impact of TAVI on the QRS-T angle, especially in the long term, has not been investigated thus far. METHODS: A total of 104 patients undergoing transcatheter aortic valve replacement due to severe aortic stenosis underwent a standardized digital 12-lead ECG for the calculation of the QRS-T angle before and 24 h after the intervention, as well as 30 days after the intervention. RESULTS: There was a significant and dynamic change in the QRS-T angle during the TAVI procedure. An initial increase in the number of patients with a wider QRS-T angle (>90°) was notable immediately after valve replacement. After 30 days, there was a significant decrease in the number of patients with a wide QRS T-angle. CONCLUSION: The QRS-T angle widens early after transcatheter aortic valve replacement and improves below the baseline during a 3 months follow-up. This could be related to the cardiacischemic stress during valve intervention. In contrast, QRS-T angle narrowing during follow-up might reflect the normalization of left ventricular hemodynamics and prognostic improvement.

From symptoms to strategy: pre-procedural NYHA-class as a key to risk stratification and personalized TAVR-management.

BACKGROUND: Transcatheter aortic valve replacement (TAVR) has become a widely used treatment option for severe aortic stenosis (AS), particularly in elderly and multimorbid patients. The New York Heart Association (NYHA) classification, which assesses the severity of heart failure (HF), is a key factor influencing TAVR outcomes. However, its impact on procedural success, complications, and outcomes remains underrepresented in recent studies. METHODS: In this multicenter study, data from 2,256 patients who underwent TAVR between 2017 and 2022 at two high-volume German Heart Centers were analyzed. Demographics, comorbidities, and peri-procedural parameters were evaluated to determine the influence of pre-procedural NYHA classification on complications, hospital stay, and outcomes. Multivariable logistic regression analyses were performed to assess the independent prognostic impact of pre-procedural NYHA class on 30-day and 1-year mortality. RESULTS: NYHA class III/IV prior to the procedure was associated with higher peri-procedural complication rates, prolonged hospital stays, and increased mortality compared to class NYHA I/II. In particular, the rates for cardiopulmonary resuscitation (5.3% vs. 0.7%; p < 0.001), acute coronary intervention (1.9% vs. 0.0%; p = 0.006), vasopressor use >6 h (11.7% vs. 1.6%; p < 0.001), and renal replacement therapy (6.8% vs. 0.2%; p < 0.001) were higher. Procedure-related complications like vascular closure device failure (4.9% vs. 1.3%; p = 0.008), need for vascular surgery (9.0% vs. 6.3%; p = 0.002), and blood transfusion (9.4% vs. 4.7%; p = 0.017) were more common in NYHA IV. Median hospital stay was longer in NYHA IV (10.0 vs. 6.0 days; p < 0.001). The 30-day mortality rate was 8.3% (NYHA IV) vs. 1.4% (NYHA I/II), and 1-year mortality was 19.2% vs. 5.2% (p < 0.001). After multivariable adjustment for relevant clinical confounders, NYHA class IV remained independently associated with both 30-day and 1-year mortality. CONCLUSIONS: Pre-procedural NYHA class provides important prognostic information in patients undergoing TAVR, with higher symptom burden associated with increased peri-procedural risk and mortality. These findings highlight the relevance of comprehensive pre-procedural evaluation and optimized timing of intervention. Incorporating functional status into pre-procedural assessment may support risk stratification and individualized patient management.

A retrospective observational study of clinical presentation and management outcomes in patients with paroxysmal supraventricular tachycardia at a tertiary center in Bahrain.

OBJECTIVES: This study aimed to evaluate the clinical characteristics, symptom presentation, and management outcomes of patients diagnosed with paroxysmal supraventricular tachycardia (PSVT) at King Hamad University Hospital (KHUH), a tertiary care center. It examined the influence of demographics, comorbidities, and sex on treatment responses to pharmacologic and non-pharmacologic interventions, including cardioversion. METHODS: A retrospective observational study was conducted on 427 adult patients with PSVT (ICD-10: I47.1, confirmed by chart review) between January 2018 and early 2024. Data were extracted from the KHUH HOPE electronic medical records system. Descriptive statistics summarized baseline characteristics; chi-square tests examined categorical associations. Kaplan-Meier analyses for the cardioversion subgroup (n = 18) are presented as exploratory and descriptive only. RESULTS: Females comprised 56.9% of the cohort (mean age 52.8 ± 15.2 years). Palpitations were the most common symptom (94.4%). Of 219 patients who received adenosine, 177 (80.8%) achieved cardioversion with the first dose, 25 (11.4%) with the second, and 17 (7.8%) with the third. Vagal maneuvers showed reduced success in patients with structural heart disease and diabetes mellitus. Electrical cardioversion was required in 18 patients (4.2%). Pacemaker implantation was documented in 3 patients (0.7%) for co-existing conduction disease, not as a PSVT treatment. Comorbidities significantly influenced outcomes: hypertension was associated with favorable vagal maneuver response, while heart failure and ischemic heart disease correlated with poor response across all modalities. CONCLUSION: PSVT generally responds well to first-line treatments. However, individualized strategies are warranted for patients with structural heart disease or significant comorbidities. Observed sex-based and age-related response differences are descriptive and require multivariable validation.

Case Report: Transcatheter closure of paravalvular leak following left ventricular assist device and aortic valve replacement.

BACKGROUND: End-stage dilated cardiomyopathy (DCM) is a common cause of end-stage heart failure, and some patients may eventually require heart transplantation. Such patients often need a left ventricular assist device (LVAD) as a bridge to heart transplantation, and those with severe aortic regurgitation may undergo concurrent aortic valve replacement. Paravalvular leak (PVL) is a complication following valve surgery that can lead to worsening heart failure; however, reports on transcatheter closure of PVL after LVAD implantation are rare. CASE SUMMARY: This article reports the case of a 39-year-old male patient with DCM who underwent CorHeart 6 LVAD implantation, aortic bioprosthetic valve replacement, and tricuspid valvuloplasty due to end-stage heart failure. A follow-up echocardiogram 2 months post-surgery revealed a progressively worsening paravalvular leak around the aortic bioprosthetic valve (maximum regurgitant jet width 3.4 mm, regurgitant jet area 20.5 cm2), accompanied by worsening symptoms of heart failure. Due to the extremely high risk of redo surgery (STS score 16.2%), a multidisciplinary team consisting of cardiac surgeons, interventional cardiologists, intensive care physicians, and echocardiographers decided to perform transcatheter closure. The procedure was successfully performed via a retrograde approach through the right femoral artery, guided by fluoroscopy combined with transthoracic echocardiography. A 10 × 8 mm ventricular septal defect occluder was used to successfully seal the leak. Intraoperative angiography and echocardiography confirmed the satisfactory position of the occluder with no residual shunt. At the 2-month and 6-month follow-up visits post-procedure, the patient's cardiac function had improved to NYHA class II, echocardiography showed no residual PVL, and the left ventricular dimensions were slightly reduced compared to previous measurements. CONCLUSION: This case suggests that transcatheter closure may be a safe and effective treatment option for high-risk patients who develop PVL following LVAD implantation combined with aortic valve replacement, providing a reference for the individualized management of similar complex cases.

Managing Alpha-Gal Allergy in a Case of Bioprosthetic TAVR.

Alpha-gal syndrome (AGS) is an uncommon IgE-mediated allergy to mammalian-derived products, caused by sensitization to the oligosaccharide galactose-α-1,3-galactose (alpha-gal) after tick exposure. Although AGS is best recognized for delayed anaphylaxis following ingestion of red meat, its implications for exposure to mammalian-derived biomaterials remain poorly characterized. We present an elderly woman with AGS who required transcatheter aortic valve replacement (TAVR) using a bovine bioprosthesis. An 84-year-old woman with serologically confirmed AGS following a Lone Star tick bite in 2012 presented with symptomatic severe aortic stenosis. Her clinical history included multiple allergic reactions to beef, persistently elevated IgE to beef, pork, and lamb, and a specific alpha-gal IgE >100 kU/L. Following a multidisciplinary evaluation, she was not considered a candidate for a mechanical valve. A prophylactic regimen was implemented, including cetirizine, omalizumab, and 60 mg prednisone 6 h prior to TAVR. The procedure was successfully performed with a bovine-derived bioprosthetic valve. Perioperative tryptase levels remained within normal range (5.2 µg/L), and no hypersensitivity reactions occurred. Postoperatively, prednisone was tapered, while fexofenadine and omalizumab were continued for 6 months. This case highlights that bioprosthetic valve replacement can be safely performed in AGS patients through multidisciplinary planning and individualized prophylaxis strategies. Further data are needed to develop standardized perioperative management protocols for this rare but clinically significant condition.

Early prone positioning after tetralogy of fallot repair in children: a retrospective cohort study of oxygenation, safety, and short-term outcomes.

AIM: To assess whether early prone positioning is associated with differences in gas-exchange indices at prespecified postoperative time points after complete tetralogy of Fallot (TOF) repair in children, without evidence of hemodynamic instability. We also explored associations between early respiratory indices and short-term outcomes. METHODS: This was a single-center retrospective cohort study of patients aged <18 years undergoing complete TOF repair. Groups were defined by positioning during the first 12 postoperative hours: prone (n = 44) or supine (n = 43). PaO₂, PaCO₂, and PaO₂/FiO₂ were measured at 1, 4, 8, and 12 h; hemodynamics were recorded over 24 h; short-term outcomes within 60 days were ascertained, and postoperative mortality was assessed during in-hospital follow-up and at 3 months. Group comparisons, Pearson correlations, and receiver operating characteristic analyses were performed. RESULTS: Prone positioning was associated with higher oxygenation indices vs. supine (higher PaO₂ at 1, 4, 8, 12 h; higher PaO₂/FiO₂ at 4, 8, 12 h) and with lower PaCO₂ at 8 and 12 h (all P ≤ 0.05). Hemodynamics were similar between groups, and no maneuver-related adverse events were documented. Short-term clinical outcomes did not differ. No in-hospital deaths occurred in either group, and no deaths were identified at the 3-month postoperative follow-up. Within the prone group, PaO₂/FiO₂ at 12 h correlated inversely with hospital stay (r = -0.33, P = 0.03). PaCO₂ at 8 h showed modest discrimination for ventilator-associated pneumonia (AUC 0.73; sensitivity 92.86%, specificity 31.25). CONCLUSIONS: Early short-duration prone positioning was associated with differences in gas-exchange indices at prespecified time points without evidence of hemodynamic instability after pediatric TOF repair, while short-term outcomes were similar. Findings support feasibility and warrant prospective multicenter evaluation to define optimal timing and duration.

Glabrol-an impurity in licorice extract-causes toxicity in muscle, bone, and immune tissues through activation of the AP-1 signaling pathway.

Licorice (Glycyrrhiza genus) is a traditional medicinal herb that has also been widely used in the food and cosmetic industries, leading to widespread human exposure. Currently, many components have been identified as active ingredients in licorice; however, the toxic impurities and quality markers still require further investigation. Glabrol has been identified as a potentially toxic component in glabridin (an extract from licorice). In this study, we sought to evaluate the toxicity of glabrol in commercial licorice extracts and investigated the toxicological mechanism. The content of glabrol and the acute toxicity in ten commercial licorice extracts from different vendors were quantified using HPLC. The toxicity was further verified in zebrafish, cells in vitro and mammals in vivo mouse models. For the in vivo experiments, C57BL/6 mice received daily oral gavage of licorice extracts with (Sample C: 319.23 μg/g) o low (Sample B: 1.54 μg/g) glabrol content for 7 days. Locomotion was assessed via Open Field Test and Elevated Plus Maze, followed by blood and organ collection for pathological and biochemical analyses. To investigate the toxicological mechanism of glabrol, RNA - seq was performed on zebrafish embryos exposed to glabrol. Morphological and histopathological evaluations in zebrafish treated with the glabrol standard were carried out using phalloidin staining, transmission electron microscopy, and alizarin red staining. Our results indicated that glabrol was detected in all tested commercial licorice extracts, and its content showed a significant positive correlation with toxicity in cells and zebrafish. In mice, licorice extracts with higher glabrol levels led to low survival rates, hypoactivity, acute liver and kidney injury, and significantly elevated plasma inflammatory cytokines. Transcriptomic and mechanistic studies revealed that glabrol disrupted AP-1 signaling pathways and may impair myo-fiber organization, osteoclast differentiation, and inflammatory responses. This study establishes glabrol as a prevalent risk-associated impurity in licorice extracts and reveals that its toxicity is mediated via the AP-1 signaling pathway.

Fecal microbiota transplantation for intestinal rehabilitation after GI bleeding and perforation post-cardiac transplant: a case report.

Gastrointestinal complications present a critical challenge following heart transplantation. These issues often stem from multifactorial mechanisms, including immunosuppressive therapy and physiological stress, which compromise mucosal defenses. We report a case of a 53-year-old heart transplant recipient who developed severe gastrointestinal bleeding and perforation due to stress ulcers. Following embolization therapy, the clinical course was further complicated by secondary intestinal cicatricial obstruction, necessitating effective intestinal rehabilitation. To address the resulting malabsorption and facilitate recovery while maintaining immunosuppressive stability, fecal microbiota transplantation (FMT) was employed to restore gut microbiota diversity. This intervention successfully promoted intestinal functional recovery. This case offers a practical reference for managing complex post-transplant gastrointestinal complications, highlighting the therapeutic potential of FMT.

Safety and efficacy of completely transthoracic echocardiography guided leadless pacemaker implantation assisted by Panna guide wire: initial clinical experience.

BACKGROUND AND OBJECTIVE: Conventional leadless pacemaker (LP) implantation relies on fluoroscopy, exposing patients and operators to ionizing radiation and contrast-related risks. Transthoracic echocardiography (TTE) is a radiation-free alternative, but complete TTE-guided LP implantation remains challenging due to poor ultrasound visibility of interventional devices. This study evaluated the short-term safety, technical feasibility, and procedural efficiency of completely TTE-guided LP implantation assisted by the ultrasound-optimized Panna guidewire. METHODS: This study utilized a prospectively protocolized, single-arm design for the TTE-guided cohort, with a retrospective comparative analysis against a historical fluoroscopy-guided control group. All safety and efficacy endpoints were formally predefined prior to patient enrollment. A total of 32 consecutive patients with LP implantation indications were screened during the study period (July 2024-July 2025), and 10 eligible patients underwent fluoroscopy/contrast-free, TTE-guided LP implantation using the Panna guidewire. Preoperative TTE acoustic window grading was performed, and standardized protocols (semi-quantitative "gooseneck" sign assessment, TTE-guided tug test) were applied during the procedure. A historical control group of 44 fluoroscopy-guided LP patients (January 2020-December 2023) was included, with propensity score overlap weighting-based comparative statistical analyses performed to balance baseline covariates and assess between-group differences. Procedural feasibility, short-term safety, pacing parameters, and skin-to-skin procedural duration were evaluated intraoperatively and during follow-up. RESULTS: All 10 patients had optimal TTE acoustic windows (Grade 1). Procedural success was 100%, with no adverse events (median follow-up: 4.7 months) and stable device performance. Sensitivity analysis showed the TTE technique's effectiveness was not affected by operator experience. Compared with 44 propensity score-weighted controls, TTE-guided implantation had slightly longer but comparable procedural duration (62.78 ± 13.05 vs. 60.5 ± 19.1 min, P > 0.05) and comparable efficiency, eliminating radiation/contrast-related risks for high-risk patients (e.g., CKD, radiation sensitivity). Long-term follow-up (12/24 months) is ongoing per schedule. CONCLUSIONS: This preliminary experience demonstrates the short-term safety and technical feasibility of completely TTE-guided LP implantation assisted by the Panna guidewire, which eliminates radiation/contrast risks while matching fluoroscopy-guided efficiency. As a hypothesis-generating proof-of-concept study (small sample, incomplete long-term follow-up), these findings require validation in larger multicenter registries (n ≥ 50) with ≥24-month follow-up to confirm long-term safety and generalizability.

Sodium-glucose cotransporter-2 inhibitor use is associated with reduced acute kidney injury after transcatheter aortic valve implantation.

BACKGROUND: Acute kidney injury (AKI) remains a clinically relevant complication after transcatheter aortic valve implantation (TAVI). Sodium-glucose cotransporter-2 inhibitors (SGLT-2i) have demonstrated nephroprotective effects in chronic kidney disease (CKD); however, TAVI-specific data are limited. METHODS: We analyzed a single-center registry of consecutive patients who underwent transfemoral TAVI for aortic stenosis between January 2015 and December 2025. After exclusions, 532 patients were included (SGLT-2i users, n = 112; non-users, n = 420). The primary endpoint was post-procedural AKI. Secondary outcomes were need for hemodialysis and in-hospital mortality. Propensity score matching (PSM) was performed (1:1), yielding 110 matched pairs. RESULTS: In the overall cohort, AKI occurred more frequently in SGLT-2i non-users than users (16.0% vs. 4.5%, p < 0.001), along with a higher requirement for hemodialysis (6.0% vs. 0.9%, p = 0.025). In the CKD subgroup, non-users had higher AKI (35.0% vs. 4.5%, p < 0.001) and hemodialysis rates (15.0% vs. 0.0%, p = 0.005), whereas outcomes were similar in the non-CKD subgroup. In the PSM cohort, non-users had higher AKI (20.0% vs. 4.5%, p < 0.001), hemodialysis (7.3% vs. 0.9%, p = 0.035), and in-hospital mortality (10.0% vs. 1.8%, p = 0.019). In the PSM CKD subgroup, non-users demonstrated markedly higher AKI (43.2% vs. 4.5%, p < 0.001), hemodialysis requirement (13.6% vs. 0.0%, p = 0.026), and in-hospital mortality (20.5% vs. 2.3%, p = 0.015), while non-CKD subgroup showed comparable outcomes. In multivariable analysis, SGLT-2i use independently predicted lower AKI risk in both the overall and matched cohorts. CONCLUSIONS: SGLT-2i use was associated with reduced AKI after TAVI, particularly in patients with CKD, and remained significant after propensity matching and multivariable adjustment.

Recurrent Ventricular Tachycardia in a Young Adult-Imaging and Genetic Evidence of

BACKGROUND: Ventricular tachycardia (VT) may represent the first manifestation of inherited cardiomyopathies, particularly in young patients without overt structural heart disease. Arrhythmogenic cardiomyopathy (ACM) is an inherited myocardial disorder characterized by ventricular arrhythmias, fibrofatty myocardial replacement, and an increased risk of sudden cardiac death. Pathogenic variants in the desmoplakin (DSP) gene have been increasingly associated with left-dominant or biventricular forms of ACM and inflammatory "hot phases" of myocardial injury. CASE PRESENTATION: We report the case of a 37-year-old male presenting with sustained monomorphic VT with right ventricular outflow tract morphology requiring synchronized electrical cardioversion. Electrocardiography in sinus rhythm demonstrated low-voltage limb leads and T-wave inversion in V1-V3. Echocardiography showed mildly reduced right ventricular function with dyskinesia of the RV free wall (TAPSE 17 mm, RV S ' 10 cm/s). Cardiac magnetic resonance revealed mild RV dilation and subepicardial late gadolinium enhancement in the lateral left ventricular wall with mild pericardial involvement, consistent with an ACM-related inflammatory phenotype. An implantable cardioverter defibrillator was implanted for secondary prevention. Genetic testing identified a heterozygous pathogenic DSP frameshift variant (c.1009_1010dup; p.Leu338Serfs36∗), confirming the diagnosis of DSP-related ACM. CONCLUSION: This case highlights the importance of integrating electrocardiography, multimodality imaging, and genetic testing in the evaluation of VT in young adults. Identification of a pathogenic DSP variant confirmed the diagnosis of ACM and has important implications for arrhythmic risk stratification and family screening.

BMPR2 affects valve development via ECM-receptor interaction in zebrafish.

Abnormal cardiac valve development may lead to functional impairment in adulthood. BMPR2, a highly conserved receptor of the BMP family, exists in two subtypes (bmpr2a and bmpr2b) in zebrafish. However, the roles of bmpr2a and bmpr2b in valve development remain unclear. In this study, we generated three bmpr2a/b mutant zebrafish strains, namely, bmpr2a- and bmpr2b-knockout zebrafish (bmpr2a -/- and bmpr2b -/- , respectively) using CRISPR/Cas9 and bmpr2a and bmpr2b double-knockout zebrafish (bmpr2a -/- ;bmpr2b -/- ) according to bmpr2a -/- and bmpr2b -/- hybridization. Using cardiac function assessment (M-mode), we characterized the cardiac developmental phenotypes of the three zebrafish mutant strains. Transcriptomic profiling (RNA-seq) was combined with whole-mount in situ hybridization (WISH) and qRT-PCR to validate gene-expression changes. The results indicated that bmpr2a -/- , bmpr2b -/- , and bmpr2a -/- ;bmpr2b -/- mutant zebrafish strains exhibited valve developmental defects at 52 hours post-fertilization (hpf), followed by cardiac contractile dysfunction. RNA-seq revealed upregulation of cardiac markers (myl9a, myl9b, tnnc1a, cmlc1, myl7, and nppa) and valve-related genes (fn1b, has2, and nfatc1), along with the downregulation of klf2a, as validated by WISH and qRT-PCR. Pathway analysis identified the ECM-receptor interaction as a key regulatory axis of bmpr2a/b-mediated valve development. In this study, we demonstrate that bmpr2a and bmpr2b cooperatively regulate cardiac contractile function and valve development in zebrafish, providing insights into BMPR2-mediated cardiovascular morphogenesis in humans.

Geriatric nutritional risk index improves risk scoring for mortality after TAVR compared to established scores.

BACKGROUND: Risk scoring prior TAVR is based on the EuroSCORE II (European System for Cardiac Operative Risk Evaluation) and the STS-score (Society of Thoracic Surgeons) which are complex, and partly prone to investigator bias. The geriatric nutritional risk index (GNRI) can be calculated by five parameters via publicly available formula (age, height, weight, sex, serum albumin), whereas EuroSCORE II and the STS-score require 21 and 69 variables, respectively. The study compares the efficiency of GNRI in predicting 30-day mortality compared to the EuroSCORE II and the STS-score. Furthermore, GNRI risk classes were analysed in the long-term. METHODS: 3.470 consecutive patients who underwent TAVR between 2010 and 2023 at our institution were analysed. GNRI calculation produces a linear parameter that can be divided in four risk groups. RESULTS: ROC (receiver operating characteristic) curve analysis demonstrated no difference in predicting 30-day mortality between GNRI vs. EuroSCORE II (AUC = 0.72 vs. 0.69, p = 0.3) and GNRI vs. STS-score (AUC = 0.72 vs. 0.72, p = 1.0). The Hosmer-Lemeshow test indicated good calibration for the GNRI model (p = 0.3793). After adjustment for preoperative demographic characteristics, Cox regression analysis for overall survival after TAVR reveals for the major risk group [21 patients; HR = 4.624; CI95%(2.881-7.422); p < 0.0001], the moderate risk group [198 patients (5.7%), HR = 2.201; CI95%[1.821-2.660]; p < 0.0001], and the low risk group [452 patients (13.0%); HR = 1.831; CI95%[1.597-2.1]; p < 0.0001], respectively. CONCLUSIONS: The GNRI is an objective publicly available score that simplifies risk assessment prior TAVR without any loss of precision compared to the EuroSCORE II and the STS-score.

The association between geriatric nutritional risk index and mortality risk of patients after transcatheter aortic valve replacement: a meta-analysis.

UNLABELLED: Malnutrition is common among older adults undergoing transcatheter aortic valve replacement (TAVR) and may adversely affect postoperative survival. The Geriatric Nutritional Risk Index (GNRI), an objective marker of nutritional status, has been proposed as a prognostic tool. However, results from individual studies remain inconsistent. This meta-analysis aimed to clarify the association between pre-procedural GNRI and mortality after TAVR. A systematic search of PubMed, Embase, and Web of Science was conducted to identify observational studies reporting categorical comparisons of GNRI (low vs. high) and all-cause mortality after TAVR. Pooled hazard ratios (HRs) with 95% confidence intervals (CIs) were calculated using random-effects models accounting for the influence of heterogeneity. Thirteen cohort studies involving 9,647 patients were included. The pooled analysis demonstrated that low pre-procedural GNRI was significantly associated with increased all-cause mortality after TAVR (HR = 1.90, 95% CI: 1.60-2.26; I 2 = 43%, p < 0.001). A stronger association was observed in prospective studies as compared to retrospective studies (p for subgroup difference = 0.04). The association remained robust across subgroups stratified by study country, sample size, GNRI cutoffs, analytical models, and follow-up duration. Meta-regression showed no significant influence of age, sex, body mass index, diabetes prevalence, Society of Thoracic Surgeons (STS) score, or follow-up durations on the effect size. In conclusion, lower GNRI prior to TAVR is associated with a higher risk of all-cause mortality, underscoring the prognostic importance of pre-procedural nutritional assessment. GNRI could be considered as a complementary tool for risk stratification in TAVR candidates, while further prospective studies are needed to determine its optimal clinical integration. SYSTEMATIC REVIEW REGISTRATION: The review protocol was prospectively registered in PROSPERO (registration number: CRD420251178097).

Impact of TriGUARD 3 on cerebral protection in Chinese patients undergoing transcatheter aortic valve replacement.

INTRODUCTION: In China, evidence regarding cerebral embolic protection device (CEPD) use during transcatheter aortic valve replacement (TAVR) for severe aortic stenosis treatment is limited. This study evaluated the TriGUARD 3 (TG3) CEPD performance in patients undergoing TAVR. METHODS: Data from two studies were pooled: the CEPD group was derived from a multicenter TG3 trial in China, whereas the control group was obtained from a single-center registry. All participants underwent transfemoral TAVR and completed pre- and postoperative diffusion-weighted magnetic resonance imaging (DW-MRI). The primary outcome was total cerebral ischemic lesion volume on DW-MRI. RESULTS: No significant difference was observed between groups in total lesion volume {CEPD [n = 62] vs. control [n = 56]; 256.53 [interquartile range (IQR), 44.12-667.99] vs. 271.88 [IQR, 96.10-650.87]; p = 0.456}. Median regression analysis in the overall cohort showed no significant association between CEPD use and total lesion volume (p = 0.181). Nonetheless, among patients with bicuspid aortic valve (BAV) stenosis, the CEPD group demonstrated significantly lower total lesion volume [165.43 (IQR, 32.96-311.13) vs. 309.38 (IQR, 96.10-788.49); p = 0.025], average lesion volume [61.3 (IQR, 23.44-89.65) vs. 93.75 (IQR, 51.73-137.07); p = 0.019], and maximum single-lesion volume [89.65 (IQR, 28.13-174.02) vs. 164.14 (IQR, 75.00-365.08); p = 0.019]. Median regression revealed that CEPD use was significantly associated with reductions in total, average, and maximum single-lesion volumes (median differences: -406.1, -82.2, and -137.6; all p < 0.05), independent of age, sex, hypertension, diabetes, valve type, and pre-dilatation. CONCLUSION: In patients with severe aortic stenosis undergoing transfemoral TAVR, TG3 CEPD did not significantly reduce the total lesion volume on DW-MRI. In the BAV subgroup, an association was observed between device use and reductions in total, average, and maximum single-lesion volumes. This exploratory finding is hypothesis-generating and should be further elucidated in larger randomized studies.

Development of a multi-label deep neural network model for predicting immediate paravalvular leakage and new-onset conduction disturbances after transcatheter aortic valve replacement: A retrospective cohort study.

BACKGROUND: Paravalvular leakage (PVL) and conduction disturbances (CDs) are important complications after transcatheter aortic valve replacement (TAVR). While existing risk prediction models predominantly adopt single-complication modeling strategies, overlooking the interrelatedness. OBJECTIVES: We aimed to develop a multi-label prediction model based on deep learning to predict immediate PVL and new-onset CDs post-TAVR simultaneously. METHODS: The study retrospectively included 966 patients who underwent first-time TAVR for aortic stenosis between April 2012 and July 2023 from the Sichuan University TAVR Registry. A deep learning-based model using the optimization algorithm Muex with 79 features and neural network labels for PVL and new-onset CDs immediately after TAVR was developed. The Muex model was validated using the bootstrap method, evaluated by area under the receiver operating characteristic curve (AUROC) and calibration curves, interpreted with Shapley Additive Explanations, and subsequently compared with a neural network model and two traditional multi-label classification models. RESULTS: The dataset included 771 training and 195 testing patients, with 6.63% exhibiting more than mild PVL and 39.6% developing new-onset CDs. The Muex model outperformed the neural network, label powerests, and multi-label k-nearest neighbor in both discrimination (micro-average AUROC: 0.739 vs. 0.705 vs. 0.504 vs. 0.514) and calibration (integrated calibration index [ICI]: 0.012 vs. 0.116 vs. 0.046 vs. 0.051), demonstrating strong performance in predicting both complications simultaneously. CONCLUSION: The study demonstrated that the Muex model is feasible for simultaneously predicting PVL and CDs post-TAVR, excelling in both performance and interpretability, while identifying high-risk patients and inferring patient-specific risk factors to facilitate informed clinical decision-making. TRIAL REGISTRATION: ClinicalTrials.gov, NCT04415047.

Aortic stenosis and sleep disordered breathing: The effects of interventional management.

Sleep disordered breathing (SDB), including obstructive sleep apnea (OSA) and central sleep apnea (CSA), is a common comorbidity of patients with cardiovascular diseases, including heart failure and aortic stenosis (AS). In specific, studies report a high prevalence of SDB among patients with severe AS, ranging from 34% to over 90%. The pathophysiological relationship between SDB and AS is considered to be bidirectional, as both conditions can initiate mechanisms such as circulatory delay, fluid shift theory or inflammation and oxidative stress that further contribute to this interplay. This interaction between SDB and AS raises questions concerning a possible combined therapeutic approach. Indeed, encouraging results have emerged regarding the beneficial effects of transcatheter aortic valve intervention (TAVI) on SDB in patients with AS, with TAVI being associated with a reduction in the prevalence and severity of SDB and improvements of the apnea-hypopnea index (AHI). Thus, the aim of this narrative review is to summarize the evidence linking SDB with AS, emphasizing the combined effects of TAVI on both conditions. The available evidence from observational studies indicates that TAVI is associated with significant reduction in the severity of SDB, particularly central sleep apnea, accompanied by improvements in the AHI and sleep parameters following the intervention, while obstructive events appear less responsive to valvular correction. These findings highlight the close pathophysiological interaction between cardiac hemodynamics and sleep regulation and suggest that treatment of the valvular pathology may provide benefits extending beyond cardiovascular improvement, with important clinical implications for the comprehensive management of these patients.

A Case of Hydrophilic Polymer Embolism after Transcatheter Aortic Valve Replacement.

Recently, endovascular catheter-based interventions have become an established therapeutic option for severe valvular heart disease. Although cholesterol crystal embolism is a well-recognized complication of endovascular treatment, the hydrophilic polymer coating of catheter devices may also induce embolic events. Herein, we reported a rare case of hydrophilic polymer embolism (HPE) after transcatheter aortic valve replacement for severe aortic stenosis. At present, there are no specific treatment options for HPE, but early diagnosis and corticosteroid therapy may be effective. This report highlighted the characteristics and successful management of HPE based on a patient we treated and previous literature.

LDL receptor-independent mechanisms of proprotein convertase subtilisin/kexin type 9 in cardiovascular pathophysiology.

Proprotein convertase subtilisin/kexin type 9 (PCSK9) is a pivotal regulator of lipid metabolism and a validated therapeutic target in cardiovascular disease (CVD). While its canonical role in mediating low-density lipoprotein receptor (LDLR) degradation underpins its cholesterol-lowering effects, emerging evidence highlights diverse LDLR-independent actions that contribute to cardiovascular pathology. PCSK9 exerts pro-inflammatory, pro-atherosclerotic, pro-thrombotic, and cardiotoxic effects and promotes valvular calcification-thereby influencing vascular, myocardial, and structural heart disease beyond lipid regulation. This review delineates these non-canonical mechanisms, emphasizing PCSK9's roles in vascular inflammation, atherosclerosis, thrombosis, regulated cardiomyocyte death, and calcific aortic valve disease (CAVD). We also address key unresolved questions regarding the "efficacy gap" between pharmacological inhibition and lifelong genetic deficiency and examine the translational implications for next-generation inhibitors, including small molecules, vaccines, and gene-editing therapies. A deeper understanding of PCSK9's pleiotropic functions may inform precision strategies to achieve cardiovascular protection extending beyond LDL-C lowering.

Transcatheter aortic valve implantation and gut microbiota: Rationale and design of the 'GUT-TAVI' cohort study.

ObjectiveAlterations in gut microbiota have been reported in patients with aortic valve stenosis (AVS), yet the impact of haemodynamic restoration following transcatheter aortic valve implantation (TAVI) on microbiota composition remains unclear. This study protocol describes a prospective cohort investigation designed to examine changes in gut microbiota and related metabolic markers after TAVI.Methods'GUT-TAVI' is a single-centre, prospective observational cohort study enrolling 40 adults with severe AVS undergoing TAVI. Stool samples will be collected at two timepoints (1 month to 1 day pre-TAVI and 3 months post-TAVI) for 16S-rRNA sequencing. Serum trimethylamine N-oxide (TMAO), standard biochemical markers, echocardiographic parameters, and dietary adherence scores will also be assessed. The primary endpoint is the change in gut microbiota composition following TAVI. Secondary analyses will examine associations between microbiota changes, haemodynamic parameters, and TMAO levels while accounting for potential confounders.ResultsAs a protocol, no results are yet available. Planned analyses include alpha- and beta-diversity comparisons, multi-variable modelling, sub-group analyses, and sensitivity analyses addressing antibiotic exposure and procedural variability.ConclusionsThis study may provide preliminary insights into how haemodynamic improvement after TAVI is associated with changes in gut microbiota and metabolic function. Findings may help inform future, larger-scale studies investigating the gut-heart axis in cardiovascular diseases.