How are coronary artery myocardial bridges diagnosed? The diagnosis of myocardial bridges depends on coronary angiography and intracoronary Doppler and ultrasonography in addition to clinical symptoms and corresponding electrocardiographic changes. Coronary angiography shows systolic stenosis or delayed diastolic relaxation, which suggests the presence of myocardial bridges. However, coronary angiography can only detect myocardial bridges that have a significant effect on coronary blood flow. The detection of myocardial bridges is related to their length, the direction of travel of the myocardial bridge fibers, and the organization of the myocardial bridge in relation to the associated artery. The diagnosis of myocardial bridges is difficult. Superficial types are difficult to diagnose because they are asymptomatic or mildly symptomatic, and even coronary angiography can only detect those with longitudinal myocardial bridges. How to treat coronary artery myocardial bridge? 1.Drug therapy: angina pectoris caused by systolic wall coronary artery compression may be effectively treated with β-blockers and calcium antagonists, such as verapamil (isobarbital) and diltiazem. 2.Surgical treatment: those who are difficult to control with medication should undergo surgical treatment. There are two types of surgery, i.e. myocardial bridging resection and coronary artery bypass grafting. (1) Myocardial Bridectomy: It is suitable for superficial type, under general anesthesia at room temperature to find myocardial bridge to be resected to completely lift the pressure on the coronary artery, and restore its distal blood flow. Simple type myocardial bridging resection is rarely performed at the same time with coronary artery bypass grafting. (2) Coronary artery bypass grafting: It is suitable for people with longitudinal or combined atherosclerotic stenosis. Coronary artery bypass grafting can be performed under general anesthesia at ambient temperature, under ambient extracorporeal circulation or under hypothermic extracorporeal circulation. Graft material can be autologous saphenous vein or internal mammary artery. Stent implantation is not recommended for coronary artery myocardial bridges because stent fracture and in-stent restenosis may easily occur due to the extrusion of the stent by long-term myocardial contraction.