房室结内折返性心动过速的射频导管消融

目的：观察我科自开展射频消融以来对引起房室结内折返性心动过速(AVNRT)的慢径路射频消融的治疗效果。方法：分析自2001-05～2004-03在我科住院行射频消融慢径路的24例AVNRT的临床电生理特征、成功率、复发率、并发症等。结果：24例AVNRT中，23例慢-快型AVNRT。1例快-慢型AVNRT，他们的电生理特性不同，但射频消融成功率达96％。有1例损伤房室结，为2：1房室传导阻滞。但很快恢复为1；1正常房室传导。到目前为止无1例复发AVNRT。结论：经导管用射频消融AVNRT病人的慢径路，成功率高，并发症少，复发率低。是目前根治AVNRT的首选方法。

RADIOFREQUENCY CATHETER ABLATION OF SLOW PATHWAY IN 24 PATIENTS WITH A-V NODAL REENTRY TACHYCARDIA

Objective: Although selective radiofrequency ablation(RFA) of the slow atrioventricular(AV) nodal pathway has provided a curative therapy for patients with AV nodal reentry tachycardia, information about the long-term result of RFA in patients is limited. Methods: From May 2001 to March 2004, 24 consecutive patients with clinically documented AV nodal reentry tachycardia(AVNRT) received RFA of antegrade slow AV nodal pathway at our eletrophysiologic laboratory. The data of eletrophysiologic characteristics and long-term follow-up were collected. The success rate, complication rate and recurrence rate were analyzed. Results: There were 23 slow-fast form AV nodal reentry tachycardia. The eletrophysiologic characteristics were typical. RFA attained a 96% success rate in all patients. There was 1 accidental injuries to AV conduction. During the follow-up periond, there was no1 recurrence of AV nodal reentry tachycardia. Conclusion: This study demonstrated that RFA was a highly effective treatment modality for patients with AV nodal reentry tachycardia. Furthermore, the incidence of complication rate and recurrence rate were low in our eletrophysiologic laboratory.