Long-term outcomes after bioprosthetic tricuspid valve replacement: a multicenter study.

Objectives: Long-term evidence about bioprosthetic tricuspid valve replacement is scarce. This study aims to investigate the long-term clinical outcomes of patients who underwent tricuspid valve replacement with bioprostheses.

Methods: This multicentre retrospective study included patients from 10 high-volume centres in 7 different countries, who underwent tricuspid valve replacement with bioprostheses. Echocardiographic and clinical data were reviewed. Long-term outcomes were investigated using Kaplan-Meier estimates, Cox regression, and competing risk analysis.

Results: Of 675 patients, isolated tricuspid valve replacement was performed in 358 patients (53%), while 317 (47%) underwent concomitant procedures. Between these 2 groups, patients who underwent combined procedures reported a significantly higher incidence of infection, atrioventricular block, multi-organ failure, longer intensive care unit and hospital stay and higher 30-day mortality over patients who underwent isolated procedure. The overall 30-day mortality occurred in 70 patients (10.4%) [46 (14.6%) combined vs 24 (6.74%) isolated, P = 0.001]. During the follow-up, there was a continuous rate of attrition due to death, with cumulative incidences of death at 5, 10 and 15 years being 27.2%, 46.2% and 60.6%, respectively. In contrast, the risk of reintervention starts to significantly increase after 10 years of follow-up, with cumulative incidences of reintervention being 6.1%, 10.8% and 23.3%, respectively. Freedom from tricuspid valve reintervention, pacemaker implantation, tricuspid valve endocarditis and major thromboembolic events at 15 years were 56.5%, 77.3%, 84.0% and 86.4%, respectively.

Conclusions: Tricuspid valve replacement with bioprostheses is an effective treatment for valvular disease, despite being associated with relatively high early and long-term mortality. However, the risk of structural valve degeneration rises significantly after 10 years.