方法 一根6F易操纵的4极导管,附有4mm远端消蚀电极,通过右股静脉将导管固定在右心房低位房间隔的中部或后部。4mm的远端消蚀电极最初定位在希氏束和三尖瓣环上冠状窦口之间的中段,以便记录房室比率约为1:4到1:2的房室电图。这时,射频能量为16～30W,持续时间不超过60秒,直到心室率减慢至100次/分以下或阻 Method A 6F-easy-to-manipulate 4-pole catheter with a 4mm distal eroded electrode was used to secure the catheter in the middle or posterior part of the low right atrial septum through the right femoral vein. The 4 mm distal eroded electrode was initially positioned midway between the His bundle and the coronary ostium on the tricuspid annulus to record a room-to-room electrogram with a 1: 4 to 1: 2 chamber ratio. At this time, RF energy is 16 ~ 30W, the duration does not exceed 60 seconds, until the ventricular rate slowed down to 100 beats / min or less resistance