患者男、85岁,因病窦植入起搏器6年,近期随访时的心电图可见频繁室性早搏(室早),室早后可见连续3个起搏脉冲信号(图1),患者并无不适感觉。随后将基础起搏频率从65ppm降到60ppm,原来室早后的3个连续起搏信号的现象消失(图2)。讨论1.室早后三个连续起搏脉冲发生原因的分析经测量室早后第1个起搏脉冲距前次心室起搏脉冲的间期为720ms,符合起搏器设定的720ms的VA间期,故该起 Male, 85 years old, was implanted with pacemaker for sickness sinus for 6 years. The ECG at the recent follow-up showed frequent premature ventricular contractions (ventricular premature), and three consecutive pacing signals were seen in the chest (Figure 1) No discomfort. Subsequent reduction in basal pacing frequency from 65 to 60 ppm resulted in the disappearance of three consecutive pacing signals from the original compartment (Figure 2). Discussion 1. Room analysis of the reasons for the occurrence of three consecutive pacing pulses after the first measuring room pacing pulse interval from the previous ventricular pacing pulse 720ms, in line with the pacemaker set 720ms VA Interval, it should be