对象为3岁以下的孤立性室缺或右室双出口伴正常大血管关系的患儿,右室流出道压差<4kPa,且不伴有引起发育落后的非心脏疾病例如Down综合征。反映临床严重性的变量有;需要使用地高辛和利尿剂,静息心率,发育落后的严重性。心导管检查测定反映氧转运的变量和反映左向右分流的变量,据信这二组变量相互独立。需要使用地 Subjects with isolated ventricular septum or right ventricle double outlet with normal macrovascular involvement under 3 years of age have a right ventricular outflow tract pressure <4 kPa and are not associated with non-heart disease such as Down syndrome, which leads to poor development. Variables that reflect clinical severity are: need to use digoxin and diuretics, resting heart rate, the severity of the developmental lag. Cardiac catheterization measures variables that reflect oxygen transport and variables that reflect left-to-right shunting, which are believed to be independent of each other. Need to use