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Orban, Mathias; Besler, Christian; Braun, Daniel; Nabauer, Michael; Zimmer, Marion; Orban, Martin; Noack, Thilo; Mehilli, Julinda; Hagl, Christian; Seeburger, Jörg; Borger, Michael; Linke, Axel; Thiele, Holger; Massberg, Steffen; Ender, Jörg; Lurz, Philipp; Hausleiter, Jörg (2018): Six-month outcome after transcatheter edge-to-edge repair of severe tricuspid regurgitation in patients with heart failure. In: European Journal of Heart Failure, Vol. 20, No. 6: pp. 1055-1062
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Abstract

Severe tricuspid regurgitation (TR) is common in patients with right-sided heart failure (HF) and causes substantial morbidity and mortality. Treatment options beyond medical therapy are limited for high-risk patients. Transcatheter edge-to-edge tricuspid valve (TV) repair showed procedural safety and short-term efficacy. Impact on mid-term outcome is unclear. This dual-centre observational study evaluates the mid-term safety, efficacy and clinical outcome after edge-to-edge TV repair for severe TR in patients with HF. Methods and results Overall, 50 patients with right-sided HF and severe TR were treated with the transcatheter edge-to-edge repair technique;14 patients were treated for isolated TR and 36 patients for combined mitral regurgitation (MR) and TR. At 6-month follow-up (available for 98% of patients), a persistent reduction of at least one echocardiographic TR grade was achieved in 90% of patients and New York Heart Association class improved in 79% of patients. The 6-minute walk distance increased by 44% (+84 m, P < 0.001), the median N-terminal pro-B-type natriuretic peptide decreased by 30% (from 3625 to 2526 pg/mL, P = 0.002), and the quality of life score improved by 16% (decrease of 6 points in the Minnesota Living with Heart Failure Questionnaire score, P = 0.056). The improvements were comparable in patients undergoing isolated TR or combined MR and TR treatment. During follow-up, 8 patients died, 14 were hospitalized for worsening of HF, 2 underwent TV surgery, and 2 received a second TV clip procedure. Conclusions Transcatheter edge-to-edge TV repair for severe TR is safe and effective in reducing TR. It appears to be associated with improved clinical outcome in the majority of patients.