BackgroundLong‐term data on durability of currently available transcatheter heart valves are sparse. We sought to assess the incidence of long‐term (8‐year) structural valve dysfunction and bioprosthetic valve failure in a cohort of patients with transcatheter aortic valve replacement (TAVR) who reached at least 5‐year follow‐up.Methods and ResultsConsecutive patients with at least 5‐year follow‐up available undergoing TAVR from June 4, 2007 to March 30, 2012 were included. Structural valve dysfunction and bioprosthetic valve failure were defined according to newly standardized European Association of Percutaneous Cardiovascular Interventions/European Society of Cardiology/European Association for Cardio‐Thoracic Surgery criteria and reported as cumulative incidence function to account for the competing risk of death. A total of 288 consecutive patients with a mean age of 80.7±5.3 years and with a mean Society of Thoracic Surgery mortality score of 8.1±5.1% were analyzed. Survival rate at 8 years was 29.8%. Mean pressure gradients decreased from 53.3±15.9 mm Hg (pre‐TAVR) to 10.5±4.5 mm Hg (in‐hospital post‐TAVR) (P<0.001). There was a small, not significant, increase in the transaortic gradient throughout follow‐up. Bioprosthetic valve failure was observed in a total of 11 patients (8‐year cumulative incidence function: 4.51%; 95% confidence interval, 1.95%–8.76%). Severe and moderate structural valve dysfunctions were reported in 7 patients (8‐year cumulative incidence function: 2.39%; 95% confidence interval, 0.77%–5.71%) and 13 patients (8‐year cumulative incidence function: 5.87%; 95% confidence interval, 3.06%–9.96%), respectively. Aortic valve reintervention (redo TAVR) was successfully performed in 2 patients (0.7%) presenting with symptomatic severe restenosis and intraprosthetic regurgitation subsequent to endocarditis.ConclusionsIn an aged population of patients with symptomatic severe aortic stenosis treated with first‐generation bioprostheses, TAVR was associated with a survival rate of 30% but low rates of bioprosthetic valve failure and structural valve dysfunction at 8 years.
T ranscatheter aortic valve replacement (TAVR) is an established alternative for patients with severe aortic stenosis. 1 There is a growing body of evidence demonstrating the durability of current TAVR devices out to 5 years. 2-5 However, it is well known that transcatheter aortic valves (TAVs) can degenerate in a manner similar to surgical bioprostheses. Background-Transcatheter aortic valves can degenerate in a manner similar to surgical bioprostheses. Methods and Results-Clinical and echocardiographic outcomes of patients who underwent redo transcatheter aortic valve replacement (TAVR) procedures >2 weeks post procedure were collected from 14 centers. Among 13 876 patients, 50 (0.4%) underwent redo TAVR procedure at participating centers. Indications for redo TAVR were moderate-severe prosthetic aortic valve stenosis (n=10, 21.7%), moderate-severe central prosthetic aortic valve regurgitation (n=13, 28.3%), and moderate-severe paraprosthetic aortic valve regurgitation (n=25, 50.0%). The index TAVR was most commonly a Medtronic CoreValve (N=38, 76.0%), followed by Edwards SAPIEN-type valves (n=12, 24.0%) and Portico (n=1, 2.0%). The redo TAVR device was most commonly a CoreValve/Evolut R (n=29, 58.0%), followed by a SAPIEN-type valve (n=20,40.0%) or a Boston Lotus valve (n=1, 2.0%). In 40 patients (80.0%), redo TAVR was performed using the identical device type or that of the succeeding generation.Valve performance was uniformly good after redo TAVR (mean transvalvular gradient post redo TAVR: 12.5±6.1 mm Hg). At hospital discharge, all patients remained alive, with 1 nondisabling stroke (2.0%) and 1 life-threatening bleed (2.0%). Permanent pacemaker implantation was required in 3 out of 35 patients without a prior pacemaker (8.6%). Late survival was 85.1% at a median follow-up of 1589 days (range: 31-3775) after index TAVR and 635 days (range: 8-2460) after redo TAVR. Conclusions-Redo TAVR for the treatment of postprocedural and late occurrence of paravalvular regurgitation and transcatheter aortic valve prosthesis failure seems to be safe, and it is associated with favorable acute and midterm clinical and echocardiographic outcomes. (Circ Cardiovasc Interv. 2016;9:e003930.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.