Background: We reviewed the patients who un der went tricuspid valve replacement (TVR) to compare the long-term clinical背景：对接受过三尖瓣置换术(TVR)的患者进行回顾，比较生物瓣膜和机械瓣膜的远期临床效果。
Preparation of Decellularized Scaffold of Active Homograft Bioprosthetic Valve Preserved by Liquid Nitrogen经液氮保存具有活性的同种生物瓣脱细胞支架的制备