Clinical significance and diagnosis of myocardial bridge

Objective To study the clinical significance and diagnosis of myocardial bridge. Methods Data of 486 patients who underwent coronary angiography (CAG) were analyzed retrospectively. Results Thirteen myocardial bridges were identified (13/486, 2.67%), among them 12 located at the left anterior descending artery (LAD), and the rest located at left circumflex branch (LCX). Two cases of myocardial bridge had complicated coronary atherosclerosis. One case of myocardial bridge induced myocardial infarction, and 4 cases had symptoms of angina pectoris. Conclusion Coronary angiography is the method of high specialty in the diagnosis of myocardial bridge. Systolic stenosis is the characteristic sign of myocardial bridge on CAG. Most of the patients with myocardial bridge are asymptomatic, but serious portions may result in ischemic heart disease, such as angina pectoris and myocardial infarction.