What is the likelihood of clinically significant heart disease in adults with asymptomatic left bundle branch block?
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Somewhere between 9% and 24% of adults with asymptomatic left bundle branch block (LBBB) have significant coronary artery disease (CAD) on angiography. Asymptomatic middle-aged adults followed for 10 to 28 years with LBBB have increased cardiovascular mortality and risk of developing high-grade atrioventricular block. (SOR B, based on cohort studies.)
Evidence-based practice 12, no. 10 (2009): 05