肺动脉瓣闭锁是指肺动脉瓣相互融合，形成无缺口的现为膜或隔膜，是一种少见的先天性心脏病。
有时候肺动脉瓣完全阻塞(肺动脉瓣闭锁)。
Sometimes the pulmonary valve is completely obstructed (pulmonary atresia).
提示肺动脉(瓣)闭锁合并室间隔缺损，血流仅流向肺脏。
This would suggest pulmonary atresia with a ventricular septal defect, and the flow is blood going to the lungs only.
且应与动脉导管未闭、主动脉肺动脉间隔缺损，空间隔缺损并主动脉瓣闭锁不全相鉴别。
Ruptured aneurysm of aortic sinus should be differentiated from patient ductus arteriosus, aertopulmonary septal defect and ventricular septal defect with aortic insufficiency.
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