Intermittent Left Bundle Branch Block: What is the Mechanism?
Journal Title: Journal of Cardiology and Cardiovascular Medicine - Year 2017, Vol 2, Issue 1
Abstract
A 73-year-old male underwent cardiologic evaluation for an incidental electrocardiographic finding of left bundle branch block (LBBB). He was asymptomatic and had no relevant cardiac history. Physical examination and transthoracic echocardiogram revealed no abnormalities. 12-lead Holter ECG showed constant sinus rhythm, preserved AV conduction (PR at the upper normal limit) and no brady/tachyarrhythmias. Complete LBBB was observed during prolonged phases of the recording, but occasionally it was intermittent (Figure 1). What is the most likely mechanism of the intermittent LBBB showed in this figure?
Authors and Affiliations
H Ali, R Cappato
Keywords
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- EP ID EP541234
- DOI 10.29328/journal.jccm.1001004
- Views 74
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