Myocardial Bridges a Forgotten Condition: A Review

Abstract

Myocardial Bridging (MB) is a congenital anomaly in which a segment of a coronary artery takes a 'tunneled' intramuscular course under a 'bridge' of overlying myocardium. The first reference of MB in coronary arteries, the association with angina and anatomically as referred by Reyman in 1737. Considered a 'benign' finding since the myocardial bridge causes coronary artery narrowing during systole therefore myocardial bridges should not compromise blood supply to the musculature during diastole. The Left Anterior Descending coronary (LAD) is the most frequently affected vessel (70% in an autopsy series) and in some cases hearts contain more than one bridge, affecting the same vessel or different coronaries.