射频消蚀房室旁道时阻抗监测的意义

Significance of impedance monitoring of radiofrequency catheter ablation of accessory pathways

分析７４例房室旁道（ＡＰ）射频消蚀术（ＲＦＣＡ）中阻抗（Ｉｍ）监测情况。成功放电时Ｉｍ值为１０８．８±２０．９Ω，有效放电为１１１．０±１３．９Ω，无效放电为１１３．３±２４．７Ω。三种放电状态下Ｉｍ值无显著差异。不同性别及放电部位间Ｉｍ亦无显著差异。结果提示ＲＦＣＡ中Ｉｍ值的理想范围为８０～１４０Ω。

Analyed that the impedance monitering of 74 patients with atrioventricular reentrant tachy cardia ablated by radiofrequency energy. The impedance value of successful radiofrequency application was 108.8±20.9Ω,effective radiofrequency application 111.0±13, 9Ω, ineffective radiofrequency application 113.3±24.7Ω. There are no differences between the three groups of radiofrequency application,different locations of RFCA and different sex. The results suggest that the optimal range of impedance is 80-140Ω.