Abstract
Asymptomatic New-Onset Left Bundle Branch Block in a Preanesthetic Evaluation for Noncardiac Surgery: Does it Matter?
Highlights
Left bundle branch block (LBBB) is a type of electrocardiogram (ECG) presentation in which electrical activity in the left bundle branches of the bundle of His is disrupted
The prevalence of left bundle branch block (LBBB) in the general population has been estimated at 0.2–1%, and is associated with a greater risk of death from cardiovascular disease [1]
The prognosis is usually worse in patients with LBBB than in those with right bundle branch block or without bundle branch block (BBB), with a prominent increase in the rate of acute myocardial infarction, leading to high-degree atrioventricular block
Summary
Left bundle branch block (LBBB) is a type of electrocardiogram (ECG) presentation in which electrical activity in the left bundle branches of the bundle of His is disrupted. The prevalence of LBBB in the general population has been estimated at 0.2–1%, and is associated with a greater risk of death from cardiovascular disease (hazard ratio [HR] = 2.4, 95% confidence interval [CI] = 1.3 to 4.7, p = 0.009) [1]. Asymptomatic New-Onset Left Bundle Branch Block in a Preanesthetic Evaluation for Noncardiac Surgery: Does it Matter?. To determine the prevalence of and risk factors for cardiovascular abnormalities of asymptomatic newonset left bundle branch block (LBBB) in elective noncardiac surgery
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