Recurrent extensive anterior myocardial infarction with left and right bundle branch block

摘要

The diagnosis of myocardial infarction with left bundle branch block is difficult. We report a case of 56‐year‐old man with old extensive anterior myocardial infarction and left bundle branch block (masked each other). The recurrent myocardial infarction indicated right bundle branch block and first‐degree atrioventricular block, making a clear diagnosis of complicated and interesting .