房室结慢径消融后心动过速复发机制  

The Mechanism of Tachycardia Recurrence After the Slow Pathway Ablation

作　　者：罗莹[1] 蔡力[1] 陶剑虹[1] 黄启华[1] 周晓芳[1] 郑竹虚[1] 

机构地区：[1]四川省人民医院心血管病研究室,四川610072

出　　处：《中国心血管杂志》1999年第2期71-72,共2页Chinese Journal of Cardiovascular Medicine

摘　　要：目的 探讨慢径消融后房室结折返性心动过速(AVNRT)复发机制.方法 对56例(男23例,女33例)平均年龄45.23±15.21岁的AVNRT患者进行射频消融前后电生理数据比较.结果 56例中6例复发(复发组).复发组与非复发组术后房室结快径前传有效不应期(ERP-FP)均缩短,复发组由308.33±41.67ms缩短为222.85±55.89ms(P<0.01).非复发组由343.68±62.28ms缩短为287.60±47.94ms(P<0.01).复发组术后ERP-FP缩短更明显,与非复发组比较有显著性差异(P<0.01).结论 射频消融后ERP-FP过度缩短可能使AVNRT复发.Objective To investigate the mechanism of atrioventricular nodal reentrant tachycardia(AVNRT) recurrence after the slow pathway ablation. Methods Total 56 cases with AVNRTCmale 23;female 33,the average age 45. 23±15. 21) were studied. Results 6 out of 56 cases were formed the recurrence group.and the rest cases formed the non-recurrence group. The antegrade effective refractory period of the fast pathway (ERP-FP) in the both groups was shortened after ablation. The shortness in recurrence group varied from 308. 33±41. 67ms to 222. 85± 55. 89ms(P<0. 01). The shortness in non-recurrence group from 343. 68±62. 28ms to 287. 60±47. 94ms(P<0. 01). ERP-FP in the recurrence group was found significantly shortened compared with non-recurrence group (P< 0. 01). Conclusion The significantly shortened ERP-FP may lead to AVNRT recurrence after ablation.

关 键 词：复发 AVNRT 慢径消融 房室结 射频消融 心动过速 术后 FP 电生理 

分 类 号：R541[医药卫生—心血管疾病] R735[医药卫生—内科学]