Conclusion tricuspid annular dilatation, right heart impairment and severe pulmonary hypertension are responsible for the development of late tricuspid regurgitation after mitral valve replacement.

结论二尖瓣置换术后远期三尖瓣功能性关闭不全与三尖瓣环扩大、右心功能损害和严重肺动脉高压有关，三尖瓣环扩大是其重要的原因。

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Objective To establish the surgical technique of tricuspid valve replacement with a stentlessatrioventricular valve and determine its function.

探索无支架房室瓣膜替换三尖瓣外科技术。

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Objective To explore the possible pathogenesis, the election and the effect of surgical treatment of severe tricuspid regurgitation(TR) after left cardiac valve replacement(LCVR).

目的探讨左心瓣膜置换术后三尖瓣重度关闭不全的机理及外科治疗选择及效果。

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