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KMID : 0352120110270010074
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Journal of Kyung Hee University
2011 Volume.27 No. 1 p.74 ~ p.77
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Intermittent Left Bundle Branch Block Occurring During General Anesthesia
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Lee Song-Yi
Kim Mi-Kyung
Shin Ok-Young
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Abstract
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A patient with uncertain history of angina went under general anesthesia for nasal septoplasty. During the perioperative period, his previously normal ECG developed a left bundle branch block (LBBB). LBBBs occuring during anesthesia is a rare event, but can be an important sign for acute myocardial infarction or myocardial ischemia. In this patient, with the injection of esmolol, his heart rate decreased and the ECG changed back to normal sinus rhythm. This kind of heart rate dependent LBBB is a benign disease not directly related to myocardial ischemia, but adequate preoperative cardiac evaluation is still needed to differentiate from myocardial ischemia.
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KEYWORD
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Left bundle branch block, Myocardial ischemia, General anesthesia
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