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Transcatheter Versus Medical Treatment of Patients With Symptomatic Severe Tricuspid Regurgitation. | LitMetric

Background: Tricuspid regurgitation is associated with increased rates of heart failure (HF) and mortality. Transcatheter tricuspid valve interventions (TTVI) are promising, but the clinical benefit is unknown.

Objectives: The purpose of this study was to investigate the potential benefit of TTVI over medical therapy in a propensity score matched population.

Methods: The TriValve (Transcatheter Tricuspid Valve Therapies) registry collected 472 patients from 22 European and North American centers who underwent TTVI from 2016 to 2018. A control cohort formed by 2 large retrospective registries enrolling medically managed patients with ≥ moderate tricuspid regurgitation in Europe and North America (n = 1,179) were propensity score 1:1 matched (distance ± 0.2 SD) using age, EuroSCORE II, and systolic pulmonary artery pressure. Survival was tested with Cox regression analysis. Primary endpoint was 1-year mortality or HF rehospitalization or the composite.

Results: After matching, 268 adequately matched pairs of patients were identified. Compared with control subjects, TTVI patients had lower 1-year mortality (23 ± 3% vs. 36 ± 3%; p = 0.001), rehospitalization (26 ± 3% vs. 47 ± 3%; p < 0.0001), and composite endpoint (32 ± 4% vs. 49 ± 3%; p = 0.0003). TTVI was associated with greater survival and freedom from HF rehospitalization (hazard ratio [HR]: 0.60; 95% confidence interval [CI]: 0.46 to 0.79; p = 0.003 unadjusted), which remained significant after adjusting for sex, New York Heart Association functional class, right ventricular dysfunction, and atrial fibrillation (HR: 0.39; 95% CI: 0.26 to 0.59; p < 0.0001) and after further adjustment for mitral regurgitation and pacemaker/defibrillator (HR: 0.35; 95% CI: 0.23 to 0.54; p < 0.0001).

Conclusions: In this propensity-matched case-control study, TTVI is associated with greater survival and reduced HF rehospitalization compared with medical therapy alone. Randomized trials should be performed to confirm these results.

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http://dx.doi.org/10.1016/j.jacc.2019.09.028DOI Listing

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