The length of time you can live with insufficient blood supply to the heart depends on the severity of the disease, treatment and individual patient factors, and should be analyzed on a case-by-case basis. The disease caused by insufficient blood supply to the heart is collectively known as coronary atherosclerotic heart disease, or coronary heart disease, and is a common cardiovascular disease. If the degree of insufficient blood supply to the heart is mild, the patient can be relieved by appropriate diet and exercise, or actively take drugs to dilate blood vessels and improve blood circulation for treatment, and can survive for a long time after the disease is smoothly controlled. If the patient’s heart blood supply deficiency is more severe and the blood vessels become severely blocked, emergency surgery is needed to improve the symptoms of myocardial ischemia, which usually does not affect life expectancy. However, it may also be life-threatening due to discontinuation of medication or sudden exacerbation of the disease, and the specific situation varies from person to person. Therefore, it is recommended that patients with cardiac insufficiency undergo cardiac ultrasound, cardiovascular angiography and other routine examinations in the cardiology department of a regular hospital to clarify the specific situation and then actively carry out the corresponding treatment.