It is a progressive systemic disease. When atherosclerosis occurs in the coronary arteries, the blood vessels supplying the heart, and blocks the blood vessels, it is what we usually call coronary heart disease. The blockage of coronary arteries is often formed gradually. High blood pressure, high blood fat, high blood sugar, smoking and other factors make the endothelium of arteries damaged, and after long-term development, fat accumulates under the inner membrane to form fatty plaques, and there is a layer of fibrous cap outside the plaque, which envelops the large amount of lipid inside, like dumplings. Thin-skinned dumplings with large fillings (atheromatous plaques) are prone to rupture. When the plaque ruptures, acute myocardial infarction occurs. Coronary intervention (PCI) is an effective treatment for coronary artery disease, and in recent years, the number of PCI treatment cases has increased rapidly, reaching more than 450,000 cases in 2013, 500,000 cases in 2014, and 560,000 cases in 2015, with the second highest number of PCI cases in the world, second only to the United States. After coronary artery disease patients receive PCI treatment, the coronary artery lumen narrowing or occlusion can be lifted, ischemic parts of the myocardial blood supply greatly improved, angina attacks can be significantly reduced or disappear, some patients can return to the normal life, work, social status before the onset. However, coronary intervention does not mean that coronary artery disease is cured, and drug stent is not a panacea. After coronary intervention, patients must also carry out corresponding adjuvant therapy and strengthen self-care to prevent restenosis in order to keep the coronary lumen open for a long time. Do you know how to maintain the stent? 1.Regulated drug treatment Stent implantation does not mean that your disease is completely cured. Just because a stent opens and unblocks a blocked or soon-to-be-blocked vessel does not mean that the vessel or the site will not become stenosed or blocked again. In order to prevent the reoccurrence of vascular disease, you need to take some medications to control the risk factors of coronary heart disease. Aspirin can inhibit platelet aggregation, and also has anti-inflammatory and antioxidant effects, which can help prevent and treat atherosclerosis. In addition to lowering blood cholesterol, statins can also raise high-density lipoprotein, which has the effects of stabilizing coronary atherosclerotic plaques, anti-inflammatory and protecting vascular endothelium, and can reduce the occurrence of sudden cardiac events. 2.Strict control of blood pressure and blood sugar Strict control of blood sugar, blood pressure, blood lipids and body weight, to control blood sugar, blood pressure, blood lipids and body weight in a good state, i.e. fasting blood sugar below 6, 2 hours after meal at about 7 or below, blood pressure control at 80/130, body mass index (i.e. weight/height squared) control at about 22-24, blood lipids remain normal for a long time, can avoid or delay the development of diabetes to the maximum extent development of complications and can make the life expectancy of diabetics reach or approach that of normal people! However, long-term blood glucose, blood pressure, blood lipids and weight to maintain within the standard range and not occur hypoglycemia, etc., requires self-learning diabetes knowledge and long-term monitoring of blood glucose blood pressure blood lipids. 3.Lifestyle change: Specifically ①Change the dietary structure: Good dietary structure and eating habits can help control blood lipids and blood pressure, thus preventing the occurrence of coronary restenosis. After coronary intervention, a light diet should be the mainstay, protein should be mainly fish, avoid overeating or eating too much. Eat more fresh vegetables, fruits, lean meat, chicken, duck, rabbit, fish, soy products and dairy products. It is not advisable to eat often or a lot of animal offal, squid, crab yolk, egg yolk, as well as fried, fried, barbecued and other foods. ②Regular exercise: After coronary intervention, patients should not stay in bed and sit still all day, but should exercise appropriately under the guidance of doctors. Regular exercise helps keep the coronary lumen open and promotes the growth of myocardial collateral vessels in the ischemic area. Post-stenting patients should master exercise intensity, and the most practical indicator reflecting the size of exercise intensity is heart rate. The formula: 170 – age = the limit of your fastest heartbeat per minute when exercising. For example, if the age is 65, 105 heartbeats per minute is the upper limit, and patients must keep their heartbeat within the limit. ③Weight control: Weight control is not only good for lowering blood lipids and controlling high blood pressure, but also reduces the burden on the heart, thus preventing the recurrence of coronary heart disease. ④ Quit smoking: Patients with coronary heart disease should be strictly prohibited from smoking. The nicotine in tobacco can increase heart rate, blood pressure, heart oxygen consumption, vascular spasm, abnormal blood flow and increased platelet adhesion. Smoking is an important cause of angina attacks and sudden death. 4. Regular review Patients need to be reviewed regularly after surgery. The doctor can decide whether to adjust the dosage and type of medication according to the patient’s specific situation in order to achieve the best results. In addition, if you feel that some symptoms similar to those before surgery appear again after the surgery, please do not ignore them and you should go to the hospital to see the doctor as soon as possible. Patients are advised to adhere to regular and scheduled follow-up. After discharge from the hospital, they should visit the outpatient clinic at the time points of 1 month, 3 months, 6 months, 9 months and 1 year to receive follow-up examinations. Patients over 40 years of age should insist on annual testing of blood lipids, blood pressure, liver and kidney function, lung X-ray, and electrocardiogram. High blood pressure, high blood pressure, diabetes, smoking, alcoholism, obesity, lack of exercise and mental stress are all important risk factors for the recurrence of coronary heart disease, and coronary heart patients must have comprehensive lifelong management and effective control of risk factors in order to prevent the occurrence and development of coronary heart disease after heart stent surgery. The development of coronary heart disease.