常规测量AH、HV间期和校正窦房结恢复时间，房室结正向和逆向文氏点(Wenckebach point)。采用右房程序刺激或短阵快速刺激(burst)，观察AF的诱发方式。
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wenckebach block point 文氏阻滞点
The anterograde effective refractory period and Wenckebach block point 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。
Sinus dysfunction group and sick sinus syndrome (P > 0.05), sinus recovery time were not related to Wenckebach block point and 2 : 1 block piont in patients with sick sinus syndrome(P> 0.05) .
将窦房结功能障碍者的窦房结恢复时间与文氏型阻滞点、2：1阻滞点作相关分析，结果均无相关性（P>0.05）。
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