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近年来,根据左束支解剖组织学的研究,证实了左束支半阻滞的存在,并认为左束支半阻滞与左束支干阻滞具有同样的临床意义。因此对左束支半阻滞的深入研究,必将给冠心病的诊断、防治和预后提供新的内容。本文通过51例左束支半阻滞的临床资料,着重讨论左束支半阻滞的心电图产生机制及左束支半阻滞与冠心病之间的关系。左束支前分支阻滞(LAH)的诊断要点:(1)额面平均电轴左偏在-30°～-45°;(2)Ⅰ、aVL呈gR型,Ⅱ、Ⅲ、aVF呈rS型,V_4、V_5有深的S波;(3)QRS≥0.08秒。除外
In recent years, according to the left bundle branch of the histological study confirmed the existence of left bundle branch block, and that left bundle branch block and left bundle branch block has the same clinical significance. Therefore, the deep study of left bundle branch block will certainly provide new contents for the diagnosis, prevention and prognosis of coronary heart disease. In this paper, 51 cases of left bundle branch block clinical data, focusing on left bundle branch block electrocardiogram mechanism and the relationship between left bundle branch block and coronary heart disease. The diagnostic criteria of left anterior bundle branch block (LAH) are as follows: (1) The mean axial frontal deviation of frontal plane is from -30 ° to -45 °; (2) Ⅰ, aVL are gR type, Ⅱ, Ⅲ, aVF are rS type , V_4, V_5 deep S wave; (3) QRS ≥ 0.08 seconds. except