逆行瓣上法射频消蚀左侧房室旁路

Radiofrequency ablatiou of left accessory pathway with retrograde superior valve approach

３０例左侧房室旁路并房室折返性心动过速（ＡＶＲＴ）病人，用逆行主动脉左房瓣上法行射频消蚀术。均为逆行左室侧瓣下法未成功的病例。每例瓣上放电３．１±２．０次，放电能量为２５～３０Ｗ，旁路距冠状窦口０．５～５．５ｃｍ，消蚀靶部位Ａ／Ｖ比例为０．８３±０．２８，３０例消蚀均成功。本文就逆行左房瓣上法消蚀左侧房室旁路的适应证、方法学等进行了讨论。

patients with left accessory atrioventricular pathway underwent radiofrequency ablation with retrograde superior valve approach. All patients failed in ablation with inferior valve approach in left ventricle.The number of 'test pulse' of radiofrequency energy (less than 15 seconds with power of 25 to 30W) ranged from 1 to 6. Successful radiofrequency energy was delivered for a total 60 to 100 seconds. The distance between accessory pathway and coronary sinus ostium was 0. 5 to 5. 5cm. AV ratio in target location was 0. 83±0. 28. 30 patients were successfully performed with ablation. Atrioventricular reentrant tachycardia in one patients recurred during a followup period of average 10. 3±8. 7 months. The patient experienced second ablation and was succeeded. This atricle disscussed the indication and methodology of retrograde superior valve approach with radiofrequency ablation.