Methods: 39 patients without structural heart disease were enrolled to receive different modes of atrial pacing (RAA, DCS, biatrial), Meanwhile, the atrial conduction times and the atrial effective refractory period (ERP) at RAA were determined.

• 方法:39例不伴器质性心脏病的阵发性空上性心动过速病人,于射频消融成功后给予心房起搏(RAA起搏,DCS起搏和双心房起搏),分别测定不同起搏状况下RAA处的心房有效不应期(ERP)和心房传导时间(RAA-His,RAA-DCS)。