The Valve Wire

Vascular Access Complications After TAVR: The Early Price of a "Minimally Invasive" Procedure

[NOTABLE] Mesar et al. present a retrospective analysis of 5,230 transfemoral TAVR patients from a single high-volume center, stratifying outcomes by complication type. Vascular complications occurred in 2.9% (n=154), but their impact was disproportionate: in-hospital mortality was 7.8% vs. 0.2% in uncomplicated cases, and propensity-matched 30-day mortality was four-fold higher (OR 4.02, 95% CI 1.98–8.18). Among vascular complications, 36% involved intraoperative bleeding requiring intervention and 27% had limb ischemia or dissection. Reassuringly, patients who survived the early postoperative period had comparable 5-year survival (51.1% vs. 50.9%) — suggesting the damage is front-loaded but not permanently prognostic.

Editorial perspective: This study is a powerful reminder that "low-risk TAVR" is not "no-risk TAVR." A 2.9% vascular complication rate in 2026 is notable at a high-volume center and may understate real-world rates at lower-volume sites. As the field expands TAVR to younger patients — where the 2025 ESC guidelines now recommend TAVR as primary therapy at age ≥70 with tricuspid anatomy and transfemoral access — the absolute number of patients experiencing these devastating early complications will increase. The finding that vascular complications essentially convert TAVR into a high-risk procedure (7.8% in-hospital mortality) should give pause to those who frame the TAVR-vs-SAVR conversation purely in terms of procedural mortality averages. Study limitations include single-center design, retrospective analysis, and the inherent selection bias of propensity matching in a small complication cohort. These data complement the recent multicenter registry showing plug-based vascular closure devices achieving 99.8% immediate hemostasis rates — technology matters at the access site.

Lifetime Valve Management and the Economics of TAVR Expansion

Mainali and Pope contribute an editorial in the Annals of Thoracic Surgery that directly confronts the economic forces driving TAVR adoption in younger patients. While the abstract is not available, the title alone signals a critical conversation the field needs to have: when hospitals, device manufacturers, and proceduralists all benefit financially from expanding transcatheter volume, is the patient's lifetime valve management strategy receiving adequate weight in decision-making?

Editorial perspective: This commentary arrives at a moment of genuine guideline tension. The 2025 ESC guidelines lowered the TAVI-preferred threshold to age 70 (from the ACC/AHA's 80), based partly on the DEDICATE trial and medium-term durability data. But as our reference literature documents, THV explantation carries 12–17% mortality, TAV-in-SAV risks patient-prosthesis mismatch, and redo-TAVR — while growing (84% of reinterventions) — has limited long-term data. The critical voices of Bowdish, Badhwar, and others who have warned about therapies outpacing evidence deserve amplification here. The economic analysis matters because it exposes a misalignment: the financial incentive is to do the first TAVR, but the clinical responsibility extends across the patient's lifetime. This editorial should be required reading for Heart Teams.

Type A Dissection After TAVI: Prevention and Management

Zheng and Cheng publish a commentary in the International Journal of Cardiology on preventing and managing type A aortic dissection after TAVI. While rare, this catastrophic complication merits attention as TAVI volumes grow and patient populations evolve. The ascending aorta undergoes significant mechanical stress during valve deployment, and pre-existing aortopathy — particularly relevant in bicuspid aortic valve patients — may elevate risk. Both guidelines classify BAV TAVI as IIb, and aortic dilation requiring surgery favors SAVR.

Anomalous Left Circumflex Artery: A Hidden Hazard in Valve Interventions

Furukawa et al. present a narrative review in the Annals of Thoracic Surgery synthesizing 45 publications on anomalous origin of the left circumflex artery (AOLCX) and its implications for both surgical and transcatheter valve interventions. The retro-aortic course puts the vessel at risk during TAVR (via compression or ostial occlusion) and surgery (via deep sutures). The authors emphasize pre-procedural CT angiography and Heart Team–based procedure selection — particularly relevant as TAVR expands to lower-risk, anatomically complex patients where such variants may be encountered more frequently.

Surgical Rescue: Over-Expanded THV in a Calcified, Aneurysmatic Annulus

Belluschi et al. report in the European Heart Journal on the surgical implantation of an over-expanded transcatheter heart valve as a rescue strategy for a patient with a calcified and aneurysmatic annulus. While details are limited (no abstract), this case illustrates the creative hybrid approaches required when standard surgical or transcatheter pathways are inadequate — and underscores why lifetime valve management planning at the index procedure is now emphasized in the 2025 ESC guidelines.

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Building the Hybrid Mindset: Transcatheter Training for Surgical Residents

Zancanaro and Danesi contribute an editorial perspective in the European Journal of Cardio-Thoracic Surgery on developing transcatheter skills during cardiac surgery residency. The subtitle — "Building the Hybrid Mindset without Losing the Craft" — captures the central tension. As the structural heart field increasingly demands operators fluent in both open and catheter-based techniques, training programs must evolve. The risk, as the authors implicitly acknowledge, is that surgical volume erosion from TAVR and TEER expansion could undermine the very surgical training pipeline needed to manage complications, perform complex reoperations, and treat patients who remain surgical candidates by all guideline criteria.

Editorial perspective: This training question has direct clinical implications. If the next generation of cardiac surgeons lacks open aortic valve replacement volume because TAVR has captured the 70+ population (ESC) or the 80+ population (ACC/AHA), who performs the SAVR in 55-year-olds with bicuspid valves? Who explants the failing TAVR? The field must solve this simultaneously — expanding transcatheter competency without hollowing out surgical expertise.

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Aortic Valve Trials

• NCT07278310 — STAR Trial (Siegel TAVR)
  • Status: Recruiting | Enrollment: 1,025 | Sponsor: MiRus
  • Evaluating a novel Siegel TAVR device in patients with symptomatic severe AS. A new entrant to the competitive TAVR landscape.
• NCT07194265 — DurAVR Pivotal Trial
  • Status: Recruiting | Enrollment: 1,650 | Sponsor: Anteris Technologies
  • Head-to-head comparison of DurAVR against SAPIEN and Evolut series. One of the largest ongoing device-vs-device TAVR trials.
• NCT05712161 — DurAVR Early Feasibility Study
  • Status: Active, not recruiting | Enrollment: 15 | Sponsor: Anteris Technologies
  • Completed enrollment; safety and feasibility data expected.
• NCT07082426 — Abbott Balloon-Expandable TAVI First-in-Human
  • Status: Active, not recruiting | Enrollment: 8 | Sponsor: Abbott Medical Devices
  • Abbott's entry into the balloon-expandable TAVI space — directly challenging Edwards' SAPIEN franchise. First-in-human data will be closely watched.
• NCT07343674 — PERFECT Registry (Evolut FX+)
  • Status: Recruiting | Enrollment: 500 | Sponsor: Portuguese Association of Interventional Cardiology
  • Real-world Portuguese registry evaluating optimal care pathways with the Medtronic Evolut FX+ system.
• NCT06589063 — TAVR in Severe Low-Flow, Low-Gradient AS
  • Status: Recruiting | Enrollment: 1,350 | Sponsor: University of Salerno
  • Investigating TAVR outcomes in this challenging patient population where diagnosis and indication remain contentious.
• NCT07519161 — Pharmacological Prevention of NOAF After TAVR
  • Status: Not yet recruiting | Enrollment: 198 | Sponsor: Shanghai East Hospital
  • Comparing metoprolol vs. amiodarone for new-onset AF prevention post-TAVR — addressing a common and clinically meaningful complication.
• NCT07515768 — TAVI Without On-Site Cardiac Surgery (Poland)
  • Status: Not yet recruiting | Enrollment: 404 | Sponsor: Medical University of Warsaw
  • Multicenter RCT paralleling the Italian TRACS trial — directly relevant to the CMS TAVR NCD reconsideration regarding site-of-service requirements.
• NCT05751577 — TRACS Trial (TAVI ± On-Site Surgery)
  • Status: Active, not recruiting | Enrollment: 657 | Sponsor: Azienda USL di Bologna
  • Italian RCT testing whether on-site cardiac surgery backup is necessary for TAVI. Results will directly inform site-of-service policy debates.
• NCT06557798 — REdo TAVI Registry
  • Status: Recruiting | Enrollment: 550 | Sponsor: Leeds Teaching Hospitals NHS Trust
  • Comparing redo-TAVI, surgical explantation/AVR, and conservative management for transcatheter valve failure. Critical lifetime management data.
• [LANDMARK] NCT02701283 — Evolut Low Risk (Long-Term Follow-Up)
  • Status: Active, not recruiting | Enrollment: 2,223 | Sponsor: Medtronic
  • Extended follow-up of the pivotal low-risk TAVR trial. Long-term durability data from this cohort are essential to resolving the TAVI-vs-SAVR debate in younger patients. Last updated March 19, 2026.
• NCT07520656 — Impact of TAVI and MV Repair on Sleep-Disordered Breathing
  • Status: Recruiting | Enrollment: 150 | Sponsor: Aristides Plaitis
  • Novel investigation of how valve interventions affect sleep-disordered breathing — an underappreciated comorbidity.
• NCT07511673 — Preoperative Dental Screening Before Valve Surgery/TAVI
  • Status: Not yet recruiting | Enrollment: 1,300 | Sponsor: Region Skane
  • RCT testing whether dental screening reduces infective endocarditis or other complications after valve interventions — addressing a practice pattern with limited evidence.

Mitral Valve — Repair Trials

• [LANDMARK] NCT04198870 — REPAIR-MR (MitraClip vs. Surgery for Primary MR)
  • Status: Active, not recruiting | Enrollment: 500 | Sponsor: Abbott Medical Devices
  • The definitive trial comparing transcatheter edge-to-edge repair vs. surgical mitral repair for primary MR. Both ACC/AHA and ESC guidelines rate TEER as IIa for high-surgical-risk primary MR — this trial could shift the evidence base for operable patients. Last updated November 2025.
• [LANDMARK] NCT05051033 — PRIMATY (MitraClip vs. Medical Therapy for Secondary MR)
  • Status: Recruiting | Enrollment: 450 | Sponsor: Annetine Gelijns
  • Tests TEER vs. surgical MV repair for secondary MR — note this includes a surgical arm, making it distinct from COAPT. Critically important for validating the ESC's Class I upgrade for TEER in ventricular SMR. Last updated March 2026.
• [LANDMARK] NCT03706833 — CLASP IID/IIF (PASCAL vs. MitraClip)
  • Status: Active, not recruiting | Enrollment: 1,247 | Sponsor: Edwards Lifesciences
  • Pivotal head-to-head comparison of Edwards PASCAL vs. Abbott MitraClip for degenerative (IID) and functional (IIF) MR. Updated April 9, 2026. Results will define the TEER competitive landscape.
• NCT04097145 — PASCAL Pivotal Trial
  • Status: Recruiting | Enrollment: 870 | Sponsor: Edwards Lifesciences
  • Evaluating PASCAL system for both primary and secondary MR pathways. Updated April 6, 2026.

Mitral Valve — Replacement Trials

• [LANDMARK] NCT03242642 — Intrepid TMVR Pivotal
  • Status: Recruiting | Enrollment: 1,056 | Sponsor: Medtronic Cardiovascular
  • The largest ongoing transcatheter mitral valve replacement trial. Intrepid is Medtronic's lead TMVR platform. Last updated March 31, 2026. TMVR remains early in its development arc compared to TEER — this trial will determine whether replacement can complement or challenge repair approaches.

Tricuspid Valve — Repair Trials

• [LANDMARK] NCT03904147 — TRILUMINATE Pivotal (TriClip for TR)
  • Status: Active, not recruiting | Enrollment: 572 | Sponsor: Abbott Medical Devices
  • The pivotal trial that, along with Tri.Fr, drove the ESC's Class IIa recommendation for transcatheter TR therapy. Longer-term follow-up continues. CMS's new TTVR NCA is a parallel development — TRILUMINATE established the evidence base for transcatheter TR therapy broadly, even though it evaluated TEER rather than replacement.

Tricuspid Valve — Replacement Trials

• [LANDMARK] NCT04482062 — TRISCEND II (EVOQUE Tricuspid Replacement)
  • Status: Active, not recruiting | Enrollment: 864 | Sponsor: Edwards Lifesciences
  • The pivotal trial for Edwards EVOQUE TTVR system — directly relevant to today's CMS NCA announcement (CAG-00467N). TRISCEND II showed superiority for symptoms and QoL vs. medical therapy but also higher bleeding and pacemaker rates. Last updated February 2026.
• NCT07516444 — TRIVITA Pivotal (VDyne TTVR vs. EVOQUE)
  • Status: Not yet recruiting | Enrollment: 730 | Sponsor: VDyne, Inc.
  • [NOTABLE] A new pivotal trial comparing VDyne's TTVR system head-to-head against Edwards EVOQUE — the first device-vs-device RCT in the transcatheter tricuspid replacement space. Enrollment target of 730 patients signals substantial investment. This trial will define the competitive landscape for TTVR if the CMS NCA results in a coverage pathway.
• NCT07516145 — Robotic Transjugular TTVR
  • Status: Recruiting | Enrollment: 10 | Sponsor: Prince of Wales Hospital, Hong Kong
  • Early feasibility of robotic-assisted transjugular TTVR — a novel delivery approach that could address access challenges in the tricuspid space.

Other Relevant Trials

• NCT05372627 — NHLBI-Emory Advanced Cardiac CT Reconstruction
  • Status: Not yet recruiting | Enrollment: 1,000 | Sponsor: NHLBI
  • Advanced CT reconstruction techniques with implications for pre-procedural TAVR planning. Updated April 9, 2026.
• NCT03152773 — MRI-Guided Heart Catheterization
  • Status: Suspended | Enrollment: 22 | Sponsor: NHLBI
  • MRI fluoroscopy with passive guidewires for cardiac catheterization — suspended, reflecting the technical challenges of MRI-guided structural interventions.

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CMS Reconsiders TAVR National Coverage (CAG-00430R2)

[NOTABLE] The Centers for Medicare & Medicaid Services has opened a reconsideration of the TAVR National Coverage Determination (CAG-00430R2). The current NCD, last updated in 2019, mandates TAVR be performed at hospitals meeting specific volume and infrastructure requirements, including the presence of a cardiac surgery program. Any revision could address several active debates: site-of-service requirements (two ongoing trials — TRACS and a Polish counterpart — are randomizing TAVI with vs. without on-site surgery), coverage for emerging indications (moderate AS with HF, asymptomatic severe AS per EARLY TAVR data), and updated risk-stratification requirements.

Clinical and market impact: A liberalized NCD could significantly expand the number of US sites performing TAVR, increase procedural volumes, and potentially open coverage for indications not currently supported — a scenario that would benefit device manufacturers but raises quality and safety concerns at lower-volume centers. Conversely, CMS could tighten requirements in response to expanding indications. We will track this closely.

CMS Opens First NCA for Transcatheter Tricuspid Valve Replacement (CAG-00467N)

[NOTABLE] In what may be the most significant regulatory development for the tricuspid space in the US, CMS has initiated a National Coverage Analysis for transcatheter tricuspid valve replacement (CAG-00467N). This is the first-ever US NCA for TTVR, reflecting the maturation of the evidence base — particularly the TRISCEND II pivotal trial of the Edwards EVOQUE system and the broader body of evidence (TRILUMINATE for TEER, Tri.Fr) that drove the 2025 ESC to grant Class IIa status to transcatheter TV therapy.

Editorial perspective: This NCA is a watershed moment for the tricuspid space. The 2020 ACC/AHA guidelines did not address transcatheter TR therapy at all — the trials hadn't read out. Now CMS is formally evaluating TTVR coverage, which could create a reimbursement pathway that fundamentally changes how severe TR is managed in the US. However, the evidence base for TTVR specifically (as opposed to TEER) remains relatively thin. TRISCEND II showed symptom and QoL benefits but also higher bleeding and pacemaker rates. The CMS review will need to grapple with whether the benefit-risk profile justifies national coverage, or whether coverage with evidence development (CED) — requiring registry enrollment — is more appropriate. Edwards Lifesciences stands as the primary beneficiary of a favorable determination.

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The structural heart device sector continues to face macroeconomic headwinds even as clinical and regulatory catalysts accumulate. The stark divergence in 6-month stock performance — Edwards up 6.7%, Anteris up 13%, but Abbott down 23% and Boston Scientific down 35% — reflects how investor sentiment is being shaped by company-specific factors well beyond structural heart. Abbott's decline is driven by broader portfolio concerns including litigation exposure, while Boston Scientific's dramatic selloff reflects valuation compression in a high-multiple medtech stock amid tariff uncertainty and sector rotation.

The CMS actions announced today are material for Edwards, which derives approximately 40% of revenue from TAVR. A favorable TTVR NCA outcome would open an entirely new reimbursement category. Edwards' upcoming April 22 earnings call will be the first opportunity for management to comment publicly on both the TAVR NCD reconsideration and the TTVR NCA. With the stock trading at 23.5x forward earnings — well below its historical premium — any positive regulatory signal could catalyze re-rating. Conversely, Medtronic's structural heart business (Evolut FX+, Intrepid TMVR) operates within a diversified portfolio that dilutes the impact of any single regulatory action, though the Evolut franchise would benefit from TAVR NCD liberalization.

The small-cap/pre-revenue segment tells its own story. Anteris Technologies, pursuing CE Mark and a pivotal US trial for its DurAVR single-piece TAVR valve, has gained 13% over six months as its clinical program advances — though its A$0.8B market cap and negative forward P/E reflect execution risk. Private companies including JenaValve (aortic regurgitation focus), Meril Life Sciences (Myval, validated in the LANDMARK trial), and VDyne (TTVR, TRIVITA pivotal trial just registered) represent the next wave of competitive pressure.

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