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临床心电图中,完全性左束支阻滞与完全性右束支阻滞并非少见,而自然状态下交替性束支阻滞也时有发生,后者常提示患者发生完全性心脏阻滞的几率较高,这些常识性观点已被熟知。此外,完全性单侧束支阻滞可以因束支存在严重病变使传导功能完全丧失而引起,属于束支存在器质性病变的结果。但也可能是某侧束支传导速度相对减慢的结果,当双侧束支的传导速度相差40ms以上时,心电图就
Clinical ECG, complete left bundle branch block and complete right bundle branch block is not uncommon, while the natural state of alternating bundle branch block also occur, which often prompts patients with complete heart block probability Higher, these commonsense views are well known. In addition, complete unilateral bundle branch block can be due to the presence of serious lesions in the bundle branch of the conduction loss caused by the total, which belongs to the bundle branch of the organic lesion results. But it may also be the result of a relatively slow beam conduction velocity on one side. When the conduction velocities of the bilateral beam branches differ by more than 40 ms, the electrocardiogram