Angiographic Prevalence of Myocardial Bridging in Our Department

Abstract

Introduction: Myocardial Bridge (MB), which is a congenital coronary artery anomaly, is characterized by remaining of a segment of an epicardial coronary artery in the myocardium. The degree of coronary obstruction caused by MB depends on its location, thickness, length and the degree of cardiac contractility. Although its prevalence in autopsy studies is reported to be as high as 80%, coronary angiography studies report a varying prevalence between 0.5% and 16%.Patients and Methods: The study was conducted retrospectively between November 2011 and October 2013 at Dumlupınar University School of Medicine Evliya Çelebi Training and Research Hospital. Angiographic records of 3835 patients who underwent coronary angiography were retrospectively analyzed in order to investigate the prevalence of MB.Results: Among 3835 patients undergoing coronary angiography, 62 had MB and the angiographic prevalence was calculated as 1.61%. The average age of the patients was 57.1, the youngest was 30 and the oldest was 82 years old. Of the patients, 12 (19%) were females and 50 (81%) were males. MB was most frequently observed in the left anterior descending (LAD) artery. 30 patients (48%) had MB in mid LAD, 30 (48%) had in distal LAD,1 (2%) had in circumflex (Cx) artery, and 1 (2%) had in right coronary artery (RCA).Conclusion: In our study, the prevalence of MB was found similar to the values presented in various angiography studies in the literature. MB was found significantly more common in males. Also, MB was detected most frequently in the LAD artery.