myocardial bridging

myocardial bridging

Coronary bridge, intramural coronary artery, intramyocardial tunneling, mural coronary artery, myocardial squeezing, myocardial tunneling Cardiology An anomaly in which a major coronary artery–CA leaves the epicardium, follows an intramyocardial course and subsequently returns to the surface; the CA is thus 'bridged' by a band of overlying myocardium; seen in 27% of autopsies, MB is a normal anatomic variant of the CAs; however, constriction of a bridged CA occurs in asystole and may cause myocardial ischemia or sudden death