Transthoracic echocardiography(TTE) was important to guide the closure of membranous ventricular septal defect.TTE examination were performed before and in operation for guiding and monitoring the whole process.TTE was used for follow-up after operation.

• 经胸超声心动图在膜部室间隔缺损封堵术的术前诊断、术中监测引导、术中效果评价及术后长期随访中发挥着重要作用。