法乐氏四联症(四联症)或右室双出口并有肺动脉瓣或/和漏斗部狭窄(右室双出口)合并完全型心内膜垫缺损(心内膜垫缺损)是一组少见的心脏复合畸形。其发病率占心内膜垫缺损手术病例的5～8%及4.1%;占四联症手术病例的0.8～1.5%,占右室双出口 Tetralogy of Fallot (tetralogy of Fallot) or double right ventricular outlet with pulmonary or / and funnel stenosis (right ventricle double outlet) with complete endocardial cushion defect (endocardial cushion defect) is a group Rare heart complex deformity. Its incidence accounted for 5 to 8% and 4.1% of cases of endocardial pad defect surgery; accounting for 0.8 to 1.5% of cases of tetralogy of Fallot, accounting for double outlet of the right ventricle