Hemiblock

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Evidence Based Medicine
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Clinical Trials
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Guidelines / Policies / Govt
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Commentary
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Definitions
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Healthcare Provider Resources
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List of terms related to Hemiblock

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Hemiblocks are defined as impaired conduction in the electrical system of the heart that occurs below the AV node within the fascicles of the left bundle branch.

Left anterior hemiblock is caused by interruption of the anterior division of the left bundle branch. This fascicle is fragile, easily exposed to damage, and has a single blood supply (the left anterior descending coronary artery).