The anterograde effective refractory period and Wenckebach blockpoint were measured before and after ablation.
进行慢径路改良，观察手术前后房室结的前传有效不应期和文氏阻滞点的改变。
2
As far as possible to make a membrane cloth, including the membrane unit is complete, or even through the interpolation calculation to determine the direction of the film blockpoint.
尽量使一块膜布中包括的膜单元是完整的，不然还要经过插值核算确定膜块鸿沟点的方位。
3
Sinus dysfunction group and sick sinus syndrome (P > 0.05), sinus recovery time were not related to Wenckebach blockpoint and 2 : 1 block piont in patients with sick sinus syndrome(P> 0.05) .