Transient atrioventricular block (AVB) occurred during 8 cryo-applications (3 CM, 5 CA) with immediate return of normal AV conduction upon cessation of application.

• 在冷冻过程中发现暂时性房室传导阻滞(AVB)8次(CM时3次,CA时5次),停止冷冻作用后房室传导功能迅速恢复。