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浅或中度低温体外循环下手术治疗小儿室间隔缺损６４例，经右房切口５２例，经肺动脉切口１２例。３４例直径１．０ｃｍ以下的围膜部和隔瓣后空间隔缺损有完好的纤维边缘，行带垫片水平褥式缝合，直径大于１．０ｃｍ的１８例应用绦纶补片修补。１２例干下型室间隔缺损采用肺动脉切口，４例直径小于０．６ｃｍ，上缘与肺动脉瓣环之间有肌肉或纤维组织，给予直接缝合。８例直径大于０．６ｃｍ，上缘为肺动脉瓣环的作补片修补。２例合并房间隔缺损者给予同期修补，２例合并动脉导管未闭在并行循环低流量灌注下切开肺动脉直接缝闭成功。结果，全部病人康复出院，随访３个月到２年，心功能Ⅰ级者６２例，Ⅱ级者２例。提示手术适应证、手术方式的选择及围手术期的处理是成功的关键。
64 cases of pediatric ventricular septal defect treated by light or moderate hypothermic cardiopulmonary bypass, 52 cases of right atrium incision and 12 cases of pulmonary artery incision. Thirty-four cases of periformeal septum and septum with a diameter of less than 1.0 cm had intact fibrous septum defect and horizontal mattress suture with pad, and 18 cases with diameter greater than 1.0 cm were repaired with dacron patch. 12 cases of dry type ventricular septal defect using pulmonary artery incision, 4 cases of diameter less than 0.6cm, between the upper edge and the pulmonary valve annulus muscle or fibrous tissue, given direct suture. 8 cases of diameter greater than 0.6cm, the upper edge of the pulmonary valve ring for patch repair. 2 patients with atrial septal defect were given concurrent repair, 2 patients with patent ductus arteriosus in parallel with low-flow perfusion under the open pulmonary artery suture success. As a result, all patients were discharged from hospital. The patients were followed up for 3 months to 2 years. There were 62 patients with grade Ⅰ cardiac function and 2 patients with grade Ⅱ. Prompted surgical indications, choice of surgical approach and perioperative management is the key to success.