Early outcomes of transcatheter aortic valve implantation for degenerated aortic bioprostheses in Japanese patients: insights from the AORTIC VIV study

Objective The valve-in-valve procedure, in which a transcatheter heart valve (THV) is implanted into a degenerated bioprosthetic valve, is standardized for high-risk patients. However, this procedure is challenging in Japanese patients who have a small aortic annulus. We investigated the feasibility, safety, and therapeutic efficacy of the valve-in-valve procedure involving a degenerated stented bioprosthesis, stentless bioprosthesis, or THV.