Outcomes of Self-Expanding vs. Balloon-Expandable Transcatheter Heart Valves for the Treatment of Degenerated Aortic Surgical Bioprostheses　― A Propensity Score-Matched Comparison ―

摘要

Background: Transcatheter aortic valve-in-valve (VIV) replacement within failed bioprosthetic surgical aortic valves is a feasible therapeutic option. However, data comparing the hemodynamic and clinical outcomes of VIV replacement with supra-annular self-expanding and balloon-expandable transcatheter heart valves (THV) are limited. Methods?and?Results: Outcomes of 40 and 95 patients treated with supra-annular self-expanding and balloon-expandable THV, respectively, were compared after propensity score matching, which yielded 37 pairs of patients with similar baseline characteristics. Hemodynamic and clinical outcomes were analyzed. Postprocedural mean gradient was significantly lower in the self-expanding THV group than in the balloon-expandable THV group (12.1±6.1 mmHg vs. 19.0±7.3 mmHg, P Conclusions: The supra-annular self-expanding THV was associated with a lower postprocedural mean gradient compared with balloon-expandable THV in patients undergoing aortic VIV replacement.