Myocardial bridges in humans, previously reported to be 1%, are now reported to account for 10-20% in animals. There are many people with myocardial bridges who always have symptoms, so is myocardial bridges a disease in the end and does it require treatment? Let Director Zhongjiang Zhou take you through the myocardial bridge. Myocardial bridge is a congenital variant, most of the population is normal, the coronary arteries are on the surface of the myocardium, called the coronary arteries outside the heart, but myocardial bridge people, the coronary artery part or a section will go inside the myocardium, so that when the myocardium contraction, will compress the coronary arteries, myocardial bridge from the fiber results, the endothelium is thin, the subendothelial tissue is incomplete, so, myocardial bridge is often mostly A small number of reports show that myocardial bridges can result in sudden death, mostly in athletes, or in people with strenuous exercise and physical labor, but rarely. The diagnosis of myocardial bridge is mainly based on coronary angiography or coronary CT. Typically, the “milking effect” can be seen under the angiography, and when doing intravascular ultrasound, the half-moon phenomenon will appear, also known as the “Ge phenomenon”. The symptoms of myocardial bridges can be effectively controlled by general medication. The myocardial bridge may appear in younger patients, and if it occurs in younger patients, coronary angiography is required, which is often done for coronary artery disease rather than myocardial bridge. In terms of treatment: 1. Myocardial bridges are prohibited by nitrates. In the coronary angiogram to see myocardial bridge, we give coronary nitroglycerin in the coronary arteries, will see myocardial bridge aggravated, generally do not play, do not play nitroglycerin, the coronary arteries are constricted, systolic pressure 30% – 40%, after playing 200 micrograms, myocardial bridge will be aggravated to 70% – 85%, obviously, in the clinic, for the young so-called coronary heart disease, even the myocardial bridge Patients, given to cardiac pain, Elactin, containing nitroglycerin class drugs, often aggravate the chest pain, so myocardial bridge is prohibited nitrate class drugs. 2, preferred beta blockers, and calcium antagonists. Beta blockers can reduce the compression of the myocardium by myocardial bridges. 3, in addition, myocardial bridges are contraindicated to put into the stent, very easy to cause rupture of the vessel. Because, the myocardial endothelium is thin and the subendothelial tissue is incomplete.