The stent cannot be removed after it is placed and medication should be taken as prescribed after the procedure. If the stenosis returns after the stent procedure, it can be treated by interventional or surgical means. A cardiac stent is an interventional procedure in which a stent is placed in a narrowed coronary artery. Once the stent is placed, the endothelial tissue gradually covers the stent and it cannot be removed. The stent is mainly made of alloy, so it does not affect your normal work and life after implantation, and therefore does not need to be removed. However, the implantation of a stent does not mean that the blood vessels will not narrow again. After the operation, it is necessary to carry out long-term secondary prevention of coronary heart disease, follow the doctor’s instructions to take aspirin, clopidogrel and other medications, low-salt and low-fat diets, quit smoking and drinking, and regularly monitor blood glucose and blood pressure. If you feel palpitations, chest tightness, dyspnea after the operation, you should go to the hospital in time.