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患者女,74岁,因心前区疼痛于1985年6月21日入院。既往有冠心病史。心电图示:窦性心律,各导联见散在室性早搏。窦性下传之QRS时限0.08″,形态呈不完全性右束支传导阻滞改变。本例特点:在aVR导联及V_1导联中的室性早搏代偿期后突然出现完全性右束支传导阻滞(CRBBB),并且V_1导联中连续的CRBBB能被适时的室早所中断,提示CRBBB的形成与室早的发生有关。可能的原因是:当窦性冲动P下传时,由于遇到Ashman现象造成的右束支内
Female patient, 74 years old, admitted to hospital on June 21, 1985 because of pain in her anterior region. Past history of coronary heart disease. ECG shows: sinus rhythm, see the leads scattered in premature ventricular contractions. Sinus QRS transmission time limit of 0.08 ", the shape of incomplete right bundle branch block change in this case features: aVR leads and V_1 lead in the premature ventricular compensatory phase suddenly appeared right bundle Branch block (CRBBB), and the continuous CRBBB in the V 1 lead can be interrupted by the proper ventricular premature rupture, suggesting that the formation of CRBBB may be related to the occurrence of ventricular premature ventricular premature ventricular septal probably because when sinus impulse P is descending, Right bundle branch due to Ashman’s phenomenon