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患者女性,49岁,临床诊断心肌炎后遗症,病窦综合征。1983年5月11日安装Edwardes28型埋藏式起搏器(VVI型)。心电图分析及讨论附图为安装起搏器术后一个月aVR导联连续记录。图示起搏信号(St)均能带动心室而产生QRS波群。起搏周期0.84s(合频率71次/分)。大多数QRS波群后都跟随有逆向P波,且R—P′逐搏延长,当R—P′长达0.38～0.44s时,则出现两种情况:(1)发生反复心搏,即P′波下传夺获心室,构成一个起搏源性室性反复搏动的波形序列(如
Female patient, 49 years old, clinical diagnosis of myocarditis sequelae, sick sinus syndrome. May 11, 1983 Install the Edwardes28 Buried Pacer (Model VVI). Electrocardiogram Analysis and Discussion The attached figure is a month after the installation of pacemaker aVR lead continuous record. The pacing signal (St) shows that all can drive the ventricular and generate QRS complexes. Pacing cycle 0.84s (combined frequency of 71 beats / min). Most of the QRS complex followed by a reverse P-wave, and R-P ’strokes extended, when the R-P’ up to 0.38 ~ 0.44s, then there are two situations: (1) P ’under the wave acquisition of the ventricular, constitute a pacing source of ventricular repeated beating waveform sequence