动脉调转分期手术中左室训练的临床应用

目的 总结动脉调转分期手术中左室训练的临床经验。方法 2001年4月至2004年5月，为7例大动脉转位病儿做左室训练术。左室训练包括体肺动脉分流和肺动脉环缩两项操作。全组肺动脉收缩压，动脉收缩压值，从术前的0．34增加至0．76。2例需要同期做原发房间隔切除，1例需要二次校正肺动脉环缩。结果 全组无手术死亡，4例在术后2周左右顺利完成二期动脉调转术，治愈出院。1例术后3个月再入院，做二期动脉调转，术后死于肝功能衰竭。2例因术后并发症未作二期手术。结论 左室训练为年龄超过新生儿期的单纯大动脉转位病儿做动脉调转术提供了必要的准备；房间交通对左室训练有重要作用；快速二期手术可获得良好的临床结果。

Clinical experience of left ventricle retraining before arterial switch

Objective To investigate the clinical results of left ventricle retraining procedure. Methods From Apr. 2001 to May 2004, 7 consecutive cases of simple TGA underwent left ventricle retraining procedure, which was composed of aorto-pulmonary shunt and pulmonary artery banding. At the operation, the ratio of systolic pulmonary/systemic pressure increased from 0.34 to 0.76. Contemporary atrial septum excision was performed in 2 cases and pulmonary artery banding revision in one. Results There was no hospital death in this series. 4 cases underwent second stage arteries switch operation (ASO) successfully 2 weeks after primary retraining procedure and discharged uneventfully. 1 case was readmitted 3 months later for ASO and died of postoperative hepatic failure. 2 cases were discharged without second staged operation because of postoperative complications. Conclusion Left ventricle retraining is necessary preparation for ASO in cases of simple TGA beyond the neonatal period. Atrial communication plays an important role in left ventricle retraining procedure. The surgical results of rapid two-stage ASO are quite satisfactory.