Coronary artery bypass grafting (heart bypass grafting) is the process of taking a section of an autologous saphenous vein or other blood vessel located in the leg and bypassing it between the aorta and the distal end of the blocked lesion of the coronary artery, so that blood from the aorta is supplied to the distal end of the coronary artery through the grafted vessel to restore the blood supply to the corresponding heart muscle, improve the ischemic state of the heart muscle, and relieve the symptoms of angina pectoris. Simply put, a channel is created between the proximal and distal ends of the narrowed coronary artery, allowing blood to bypass the narrowed area and reach the distal end. Patients who have undergone coronary angioplasty and have stents installed in their coronary arteries (commonly known as PTCA) will also require timely bypass surgery if angina occurs again. This will not only eliminate angina and enable the patient to live and work normally, but also prevent myocardial infarction and sudden death. Hundreds of coronary artery bypass surgeries have been performed in our hospital so far, with very few recurrences.