室间隔缺损(ventricular septal defect,VSD)是胚胎心室间隔发育不全而形成的左右心室间的异常交通。VSD是小儿最常见的先天性心脏病,约占20%,其中膜周部VSD最常见,占75%～80%。由于左右心室间存在压差,左向右分流导致肺多血,可引起肺动脉高压、充血性心力 Ventricular septal defect (VSD) is an abnormal traffic between the left and right ventricles formed by hypoplastic septal development of the embryo. VSD is the most common congenital heart disease in children, accounting for about 20%, of which the most common peritoneal VSD, accounting for 75% to 80%. Due to the existence of pressure between the left and right ventricular pressure, left to right shunt lead to pulmonary blood, can cause pulmonary hypertension, congestive heart