Quality of Life After Transcatheter Tricuspid Valve Replacement: 1-Year Results From TRISCEND II Pivotal Trial

Background: Severe tricuspid regurgitation (TR) often causes substantial impairment in patient-reported health status (ie, symptoms, physical and social function, and quality of life), which may improve with transcatheter tricuspid valve replacement (TTVR).

Objectives: We performed an in-depth analysis of health status of patients enrolled in the TRISCEND (Edwards EVOQUE Transcatheter Tricuspid Valve Replacement: Pivotal Clinical Investigation of Safety and Clinical Efficacy using a Novel Device) II pivotal trial to help quantify the benefit of intervention to patients.

Methods: The TRISCEND II pivotal trial randomized 400 patients with symptomatic and severe or greater TR 2:1 to TTVR with the EVOQUE tricuspid valve replacement system plus optimal medical therapy (OMT) or OMT alone. Health status was assessed with the Kansas City Cardiomyopathy Questionnaire and the 36-Item Short Form Health Survey. Changes in health status over 1 year were compared between treatment groups using mixed-effects repeated-measures models.

Results: The analysis cohort included 392 patients, of whom 259 underwent attempted TTVR and 133 received OMT alone (mean age 79.2 ± 7.6 years, 75.5% women, 56.1% with massive or torrential TR). Patients had substantially impaired health status at baseline (mean Kansas City Cardiomyopathy Questionnaire Overall Summary Score [KCCQ-OS] 52.1 ± 22.8; mean 36-Item Short Form Health Survey physical component summary score 35.2 ± 8.4). TTVR+OMT patients reported significantly greater improvement in both disease-specific and generic health status at each follow-up time point. Mean between-group differences in the KCCQ-OS favored TTVR+OMT at each time point: 11.8 points (95% CI: 7.4-16.3 points) at 30 days, 20.8 points (95% CI: 16.1-25.5 points) at 6 months, and 17.8 points (95% CI: 13.0-22.5 points) at 1 year. In subgroup analyses, TTVR+OMT improved health status to a greater extent among patients with torrential or massive TR vs severe TR (treatment effect 23.3 vs 22.6 vs 11.3; interaction P = 0.049). At 1 year, 64.6% of TTVR+OMT patients were alive and well (KCCQ-OS ≥60 points and no decline of ≥10 points from baseline) compared with 31.0% with OMT alone.

Conclusions: Compared with OMT alone, treatment of patients with symptomatic and severe or greater TR with TTVR+OMT resulted in substantial improvement in patients' symptoms, function, and quality of life. These benefits were evident 30 days after TTVR, continued to increase through 6 months, and remained durable through 1 year. (TRISCEND II Pivotal Trial [Edwards EVOQUE Transcatheter Tricuspid Valve Replacement: Pivotal Clinical Investigation of Safety and Clinical Efficacy using a Novel Device]; NCT04482062).