自1969年 Sealy 和1974年 Wallace 首次报道右室和左室游离壁房室旁道切断术治疗预激综合征预激获得成功以来,迄今已行2000余例报告。预激旁道切断的成功率为98％,后间隔旁道切断术产生心脏传导阻滞已降至5％以 Since Segal in 1969 and 1974 Wallace first reported right ventricular and left ventricular free wall atrioventricular bypass surgery to treat pre-excitation syndrome was successful, so far has been more than 2000 cases reported. The success rate of the pre-shunt bypass was 98%, and the posterior bypass shunt resulted in the reduction of heart block to 5%