Evaluate transcatheter mitral valve replacement (TMVR) valve-in-valve (VIV) outcomes in three different mitral bioprostheses (of comparable measured internal diameters) under stable hemodynamic and surgical conditions by bench, echocardiographic, computerized tomography (CT), and autopsy comparisons pre- and post-valve implantation in a porcine model under matched controlled conditions.

中文翻译：

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二尖瓣瓣中植入的比较差异：一种新的二尖瓣生物瓣与目前的镶嵌瓣和史诗瓣

在稳定的血流动力学和手术条件下，通过工作台、超声心动图、计算机断层扫描 (CT) 和尸检比较，评估三种不同二尖瓣生物假体（测量内径相当）的经导管二尖瓣置换术 (TMVR) 瓣中瓣 (VIV) 结果- 在匹配的受控条件下，在猪模型中进行瓣膜后植入。