摘要
目的探讨“能量滴定法”在射频消融治疗房室结折返性心动过速术中对房室传导阻滞的预防作用。方法收集经射频消融术治疗的房室结折返性心动过速865例;消融过程采用“下位法+能量滴定法”。结果治疗成功率98.9%,复发率为2.08%,10例患者出现I°房室传导阻滞,无III°房室传导阻滞发生。靶点数≥5.0、有效靶点/总靶点<70%和累计消融能量(W*S)≥2300的患者房室传导阻滞的发生率明显增高(P<0.05),而复发率则无明显差异。结论射频消融术治疗房室结折返性心动过速减少累计消融能量、控制总靶点数和提高靶点有效率能有效减少房室传导阻滞的发生。
Objective To discuss the prevention of atrioventricular block during radio-frequency ablation （RFCA） for the treatment of atrioventricular nodal reentrant tachycardia （AVN-RT）. Methods Total 865 patients with atrioventricular nodal reentrant tachycardia treated with RFCA were studied. Energy discharge approach was used. Results The success rate for AVNRT was 99.42%. Recurrence rate was 2.08%. Ⅰ° atrial-ventriealar block developed in 10 patients. The patients with target sites ≥5.0, ratio of effective target sites/total sites 〈 70% and total energy output （W s S） I〉2300 were more likely to develop atrial-ventrieular block （AVB） （P 〈 0.05）. There was no remarkable difference in the recurrence rate. Corldusions During RFCA for the treatment of AVRT, decrease the total energy output and the target sites, increase the effective target sites can decrease the occurrence of AVB.
出处
《心脑血管病防治》
2007年第3期151-153,共3页
CARDIO-CEREBROVASCULAR DISEASE PREVENTION AND TREATMENT
关键词
房室结折返性心动过速
射频消融术
房室传导阻滞
并发症
能量滴定法
有效靶点
Atrioventrieular nodal reentrant taehyeardia
Radio-frequency catheter ablation （RFCA）
Atrial-ventrieular block （AVB）
Complication
Energy discharge approaeh
Effective target site
