Arq. Bras. Cardiol. 2023; 120(11): e20230200
Left Anterior Fascicular Block Associated with Atrioventricular Block during Exercise Stress Test
Andréa Marinho Falcão
, Vagner L. Suares, William A. Chalela
Introduction
The exercise stress test (EST) has been indicated in various clinical situations. Despite the robust evidence about the clinical significance of ST-T abnormalities during exercise, little attention has been paid to the development of exercise-induced intraventricular conduction disorders.
Conduction disorders and fascicular blocks induced during EST are rare. The prevalence of stress-induced left bundle-branch blocks (LBBB) ranges from 0.3%-0.5%, and frequently, the prognosis is more adverse (greater CAD and heart failure prevalence).
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Left Anterior Fascicular Block Associated with Atrioventricular Block during Exercise Stress Test
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