法乐氏四联症根治术后,大部分病人临床症状和血液动力学均获改善。但尚有3.5～5.5%的病人发生晚期的突然死亡,.一些探索性的研究认为运动、右心室残余压力、右心室功能衰竭、传导系统损伤与之有关。近年回顾性研究指出,术后的室性心律失常作为法乐氏四联症根治术后晚期突然死亡的原因虽未被最后证实但为其重要因素之一。根据文献资料,法乐氏四联症根治术后 After tetralogy of Fallot, the clinical symptoms and hemodynamics of most patients were improved. However, in 3.5 to 5.5% of patients, sudden death occurs late, and some exploratory studies suggest that exercise, right ventricular residual pressure, right ventricular failure, and conduction system damage are related to it. In recent years, retrospective study pointed out that postoperative ventricular arrhythmia as tetralogy of Fallot root cause of sudden death after the late confirmed but not yet one of the important factors. According to the literature, tetralogy of Fallot after radical surgery