Int J Cardiol. 2012 Feb 9;154(3):e47-9. doi: 10.1016/j.ijcard.2009.03.128. Epub 2009 May 5.
Changing axis deviation has been reported also during atrial fibrillation or atrial flutter. Changing axis deviation has been also reported during acute myocardial infarction associated with atrial fibrillation too or at the end of atrial fibrillation during acute myocardial infarction. Left bundle branch block is usually associated with normal or left axis deviation. Rarely the ECG shows a LBBB with changing QRS morphology and changing axis deviation. There are several possible explanations for the intermittent shift in the QRS axis in the presence of complete left bundle branch block. The most plausible explanation is the coexistence of left posterior hemiblock and predivisional left bundle branch block. We present a case of a left bundle branch block with changing axis deviation in a 93-year-old Italian woman admitted to the Cardiology Unit with an acute myocardial infarction.
在心房颤动或心房扑动期间也有报道轴变化。在与心房颤动相关的急性心肌梗死中或在急性心肌梗死期间心房颤动结束时也有报道轴变化。左束支传导阻滞通常与正常或左轴偏离相关。很少有心电图显示 QRS 形态和轴变化的 LBBB。在完全性左束支传导阻滞的情况下，QRS 轴间歇性移位有几种可能的解释。最合理的解释是左后分支阻滞和预分支左束支传导阻滞的共存。我们介绍了一位 93 岁的意大利女性患者的病例，她因急性心肌梗死入住心内科，心电图显示左束支传导阻滞伴轴变化。
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