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本文对北京安贞医院1984年4月至1994年12月收治的24例18岁以下单纯先天性二尖瓣关闭不全患儿进行了回顾性总结，临床表现主要为来自肺静脉高压和低心排量所致活动后呼吸困难、疲乏。生长发育不受影响。心电图、超声心动图、心脏X线检查主要为左心负荷容量增加及左房左室扩大。手术方法首选二尖瓣成形术，手术预后与术前心功能相关。
This article retrospectively reviewed 24 cases of simple congenital mitral regurgitation in children under 18 years of age from April 1984 to December 1994 in Beijing Anzhen Hospital. The clinical manifestations were mainly from pulmonary hypertension and low cardiac output After the activity caused by breathing difficulties, tired. Growth and development are not affected. ECG, echocardiography, cardiac X-ray examination mainly for the left heart load capacity and left atrial enlargement. Mitral valvuloplasty is the preferred surgical method, and the prognosis of surgery is related to preoperative cardiac function.