Does Myocardial Bridge Appear More Frequently and Diffusely on Radial Access Coronary Angiography?

Background: Although the incidence of myocardial bridge (MB) has been defined in different conventional coronary angiography (CCA) studies,the frequency of MB in radial access coronary angiography (RACA) is unknown.The aim of this study was to determine the incidence of MB in patients undergoing RACA. Method: A total of 2600 consecutive patients who underwent RACA were retrospectively investigated to detect the presence of MB.The clinical,laboratory, and angiographic features of the patients with MB were analyzed. Results: : MB was detected at an incidence of 10.2%, in 255/2600 patients who underwent RACA.The most involved coronary artery was the left anterior descending artery (LAD) (86.9%) and the mid segment (84.9%) was the most affected section.Co-involvement of multiple coronary arteries by MB was 7.8%. Coronary artery disease (CAD) was determined in 102 (36.2%) of the coronary arteries with MB, 82.4% which were proximal to the MB. Conclusion: These data demonstrated that the incidence of MB able to be detected on RACA was much higher than reported in previous CCA studies.