Giant myocardial bridge

When a portion of the coronary arteries in the myocardium it is called myocardial bridge (MB). Although MB occurs in other arteries; it most frequently occurs over anterior descending coronary artery. MB is muscle fibers 10-30mm long. Actual hemodynamic disorder caused by myocardial band is the continuation of the narrowing that occurs during systole phase until early and middiastolic phase. If patients have myocardial band and are in the third group and symptomatic and if these symptoms continue in spite of effective medical treatment and there is ischemia in the exercise test or thallium scintigraphy with exercise test; supracoronary myotomy is a preferable method.