an abnormality of the electrical conducting system of the heart. There are two main conducting pathways in the heart, the left and the right bundle. In LBBB, the left conducting pathway no longer functions so electrical conduction is maintained through the right bundle. LBBB is more common in structural abnormalities of the heart such as in heart muscle conditions, high blood pressure or coronary artery narrowing.
« Back to Glossary IndexLeft Bundle Branch Block [LBBB]
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