目的：介绍二尖瓣闭式扩张术后的瓣膜替换术经验。
Objective: to sum up experience of heart valve replacement after closed mitral commissurotomy.
目的总结73例二尖瓣闭式扩张术后的瓣膜置换术的经验。
Objective to retrospectively review the experience of heart valve replacement after closed mitral commissurotomy in 73 cases.
目的：探讨闭式二尖瓣扩张术后心脏瓣膜替换术的手术指征、手术方法及并发症防治。
Objective To investigate the radiologic characteristics and the influence factors after valve replacements for rheumatic heart disease.
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