Editorial

Myocardial Bridging

Authors: Sarabjeet Singh, MD, Rohit Arora, MD, FACC, FSCAI, Sandeep Khosla, MD, FACC, FSCAI

Abstract

Muscle overlying the intramyocardial segment of an epicardial coronary artery is defined as a myocardial bridge, and the artery coursing within the myocardium is known as a tunneled artery. It is an inborn coronary abnormality that was recognized at autopsy by Reyman1 in 1737 and first identified angiographically by Portmann and Iwig2 in 1960. A large discrepancy exists between the incidence of reported myocardial bridging to vary between 15% and 85% in autopsy, and 0.5% and 2.5% in angiographic series. It is most often confined to the midportion of the left anterior descending coronary artery3 although there have been few cases reported involving the left circumflex artery or right coronary artery.

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