Health Status After Transcatheter Tricuspid-Valve Repair in Patients With Severe Tricuspid Regurgitation

Abstract

BackgroundIn the TRILUMINATE Pivotal (Trial to Evaluate Cardiovascular Outcomes in Patients Treated with the Tricuspid Valve Repair System Pivotal), tricuspid transcatheter edge-to-edge repair (T-TEER) reduced tricuspid regurgitation (TR) and improved health status compared with medical therapy alone with no benefit on heart failure hospitalizations or survival. ObjectivesThe purpose of this study was to better understand the health status benefits of T-TEER within the TRILUMINATE Pivotal trial. MethodsTRILUMINATE randomized patients with severe TR to T-TEER (n = 175) or medical therapy (n = 175). Health status was assessed at baseline and at 1, 6, and 12 months with the Kansas City Cardiomyopathy Questionnaire (KCCQ) (range 0-100; higher = better), which was compared between treatment groups using mixed effects linear regression. Alive and well was defined as KCCQ overall summary score ≥60 and no decline from baseline of >10 points at 1 year. ResultsCompared with medical therapy, T-TEER significantly improved health status at 1 month (mean between-group difference in KCCQ overall summary score 9.4 points; 95% CI: 5.3-13.4 points), with a small additional improvement at 1 year (mean between-group difference 10.4 points; 95% CI: 6.3-14.6 points). T-TEER patients were more likely to be alive and well at 1 year (T-TEER vs medical therapy: 74.8% vs 45.9%; P < 0.001), with a number needed to treat of 3.5. Interaction analyses demonstrated that the benefit of T-TEER diminished as baseline KCCQ overall summary score increased (Pint < 0.001). Exploratory analyses suggested that much of the health status benefit of T-TEER could be explained by TR reduction and that improvement in health status after T-TEER was strongly correlated with reduced 1-year mortality and heart failure hospitalization. ConclusionsT-TEER with the TriClip system resulted in substantial and sustained health status improvement in patients with severe TR compared with medical therapy alone.