myocardial bridge

my·o·car·di·al bridge

a bridge of cardiac muscle fibers extending over the epicardial aspect of a coronary artery; this finding, in cases of sudden unexpected death, has led to speculation that cardiac contraction during exertion could constrict the coronary artery.
References in periodicals archive ?
2) The myocardial bridge is diagnosed on catheter angiography by observing systolic compression of the artery, or the so-called "milking effect.
Abstract: We report a case of anterior myocardial infarction in a middle-aged man without risk factors for atherosclerosis in whom myocardial bridge was diagnosed several years later.
CORONARY STENTING FOR MYOCARDIAL INFARCTION DUE TO VASOSPASM IN A MYOCARDIAL BRIDGE.
In autopsy and multidetector computed tomography (MDCT) series myocardial bridge segments were reported in ventricular muscle (2-6).
Objective: Myocardial bridge (MB) is a congenital anomaly characterized by narrowing during systole of some of the epicardial coronary arterial segments running in the myocardium.
There is an evidence from pathophysiologic and intravascular ultrasound studies that the arterial segment proximal to the myocardial bridge (MB) has a higher frequency of atherosclerosis, whereas the tunneled segment is relatively spared.
A part of epicardial coronary arteries traveling through myocardial tissue other than its normal subepicardial pathway is known as myocardial bridge (MB).
Induction of ischemia solely by a myocardial bridge has been demonstrated and different underlying mechanisms such as thrombus formation, vasospasm, endothelial dysfunction or impaired coronary flow reserve have been proposed to explain this (8).