Fig. 2

Intraoperative image of surgical explantation of TAVR prostheses. A The penetrations of aortic wall by the bioprosthesis crown were confirmed (blue arrows). B Circumferential neoendotheliazation was presented most prominently at the outermost device and the other three devices were sited inside the left ventricular outflow tract and overlapped. C Four TAVR bioprostheses were integrally explanted