房室结折返性心动过速消融后复发线性消融和常规方法消融比较

目的 比较房室结折返性心动过速(AVNRT)消融后复发患者线性消融和常规方法消融的有效性和安全性.方法 回顾性分析比较AVNRT消融后复发患者Koch三角基底部线性消融和常规方法消融慢径消除率、手术成功率、放电时间和操作时间.结果 线性消融放电时间明显长于常规方法消融,而慢径消除率、手术成功率及操作时间差异均无显著性,在消融过程中两组各有1例出现一过性Ⅰ度房室传导阻滞,两组无任何程度的持续房室传导阻滞发生.结论 对常规方法消融后复发的AVNRT,Koch三角基底部线性消融与常规消融方法均为安全、有效的方法,两者可互为补充.

A comparison of the straight linear approach with focal approach in the recurrence patients of atrioventricular nodal reentrant tachycardia after radiofrequency catheter ablation

Objective To compare the difference in efficacy and safety between the straight linear approach and focal approach in the recurrence patients of atrioventricular nodal reentrant tachycardia(AVNRT)after radiofrequency catheter ablation(RF).Meth- ods In the recurrence cases with common type AVNRT after RF,linear approach in the Koch's triangle and local mapping ap- proach were compared in the elimination of slow pathway,the rate of the success,the time of RF application and the total session. Results The time of RF application of linear approach group were longer than that of local mapping approach group.However, there were no difference between the two groups in the elimination of slow pathway,the rate of the success,the time of the total session.There was one respectively in two groups first-degree AV block occurred transiently during RF application and were no persistence AV block.Conclusion Both of the linear approach in Koch's triangle and local mapping approach are effective,safe and sometimes bring out the best in each other in recurrence cases with common type AVNRT after RF.