作者于1979年曾收治主—肺动脉间隔缺损2例,为较少见的先天性心脏病,其主要血液动力学改变为左心容量负荷增加,继而由于肺动脉高压导致右心负荷增加,以上改变与动脉导管未闭极为相似。本病常合并其它心血管畸形如动脉导管未闭,心房或心室间隔缺损及主 The authors in 1979 had treated the main - pulmonary septal defect in 2 cases, for the less common congenital heart disease, the main hemodynamic changes to the left ventricular volume load increased, and then due to pulmonary hypertension caused by increased right heart load, the above changes and Patent ductus arteriosus is very similar. The disease often associated with other cardiovascular malformations such as patent ductus arteriosus, atrial or ventricular septal defect and the main