结果示右房径路组术后右心室收缩功能优于右室径路组，术后心律失常及肺动脉瓣关闭不全发生率明显为低。
Results:the contractile function of right ventricle was better in transatrial approach group. The incidences of arrhythmia and pulmonary regurgitation were lower.
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。
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。
Conclusion tricuspid annular dilatation, right heart impairment and severe pulmonary hypertension are responsible for the development of late tricuspid regurgitation after mitral valve replacement.
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