目的 :介绍体外循环心脏不停跳小儿部分性房室共同通道手术治疗经验。方法 :自 1994年 10月～ 2 0 0 1年 10月 ,经胸正中切口及右胸前外切口在浅低温体外循环心脏不停跳下行小儿部分性房室共同通道手术矫治 2 6例。结果 :全组平均体外循环时间 5 6 8min ,术后无低心排、严重心律失常 ,无栓塞和脑部并发症。除 1例术后二尖瓣轻度返流外 ,余无杂音和残余分流 ,治愈率 10 0 %。随访 3～ 2 4个月 ,心功能改善 ,活动正常。结论 :体外循环心脏不停跳下矫治部分性房室共同通道有如下优点 :①避免主动脉阻断引起的心肌损害。②可清楚观察房室瓣的反流及修复效果。③术中可即时观察是否损伤传导束 Objective: To introduce the experience of surgical treatment of partial atrioventricular common channel in children with cardiopulmonary bypass. Methods: From October 1994 to October 2001, twenty-six patients underwent partial atrioventricular common channel surgery under mild hypothermic cardiopulmonary bypass. Results: The mean duration of cardiopulmonary bypass was 56.8 minutes. There was no postoperative low cardiac output, severe arrhythmia, no embolization and brain complications. In addition to a case of mild postoperative mitral regurgitation, I no residual noise and residual shunt, the cure rate 100%. Followed up for 3 ~ 24 months, cardiac function improved, activities were normal. Conclusion: Cardiopulmonary bypass with constant beating off the common part of atrioventricular aisle has the following advantages: ① to avoid myocardial damage caused by aortic block. ② can clearly observe the atrioventricular valve regurgitation and repair effect. ③ intraoperative can be observed immediately damage the conduction beam