This review highlights the diverse clinical conditions associated with episodic LBBB and emphasizes the critical importance of excluding acute coronary syndrome in this setting.
Episodic LBBB warrants ACS exclusion and condition-specific evaluation; leaves open need for prospective outcome studies.
Episodic (transient/ intermittent) left bundle branch block (LBBB) has been associated with different conditions such as bradycardia, tachycardia, anesthesia, acute pulmonary embolism, changes in intrathoracic pressure, chest trauma, cardiac interventional procedures, mad honey poisoning, and in other clinical settings. Of note, exclusion of an acute coronary syndrome in the setting of episodic LBBB is of great importance. Moreover, episodic LBBB is sometimes symptomatic and may be associated with left ventricular systolic and/or diastolic dysfunction or conduction disturbances leading to syncope. This review article provides a comprehensive overview of the conditions associated with episodic LBBB and discusses the clinical impact of this phenomenon.
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Bazoukis et al. (2016) studied this question.
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