慢性二尖瓣关闭不全，最常见的病因是(?)A．二尖瓣脱垂B．老年退行性病变，二尖瓣环和瓣下钙化C．乳头肌腱索功能不全D．风湿性E．先天畸形

作者: rantiku 人气: - 评论: 0

问题慢性二尖瓣关闭不全，最常见的病因是(?)

选项 A．二尖瓣脱垂 B．老年退行性病变，二尖瓣环和瓣下钙化 C．乳头肌腱索功能不全 D．风湿性 E．先天畸形

答案 D

解析

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