常见的非紫绀型先心病如房、室间隔缺损、心内膜垫缺损、动脉导管未闭、肺静脉畸形引流、主动脉窦瘤破裂等,在病理上表现为心脏某些结构缺陷有异常通道,在血液动力学上存在左向右的心内、外分流或异常血流,用二维超声心动图可以显示解剖缺陷,用常规多普勒、彩色多普勒可检出血液动力学上的分流 Common non-cyanotic congenital heart disease such as room, ventricular septal defect, endocardial cushion defect, patent ductus arteriosus, pulmonary venous anomalies drainage, rupture of the sinus aneurysm, the pathological manifestations of some structural defects of the heart abnormal channels, Left-to-right left ventricular tachycardia or abnormal blood flow exists in hemodynamics and anatomic defects can be visualized with two-dimensional echocardiography. Hemodynamic shunting can be detected by conventional Doppler, color Doppler