目的探讨儿童心脏瓣膜置换手术及治疗效果。
Objective: To summarize the surgical results of valve replacement in children.
目的总结心脏瓣膜病的人工瓣膜置换手术治疗经验。
Objective To review the experience of prosthetic heart valve replacement.
目的：探讨儿童心脏瓣膜病的人工机械瓣膜置换手术要点及方法。
Objective To determine the surgical point and technique of artificial mechanical valve replacement in children with heart valve diseases.
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