As a cardiologist, I am asked a lot of questions about stents almost every day, and most of the questions are asked to me with skepticism. 1. The same coronary heart disease, both have done imaging, why the patient in the next bed only needs medication, but I need to put stents A: Coronary heart disease is also like other diseases, divided into light, medium and heavy, relatively light coronary heart disease only needs medication, heavy need to put stents, the specific criterion is coronary angiography, if the coronary angiography shows that the coronary artery stenosis is greater than 50% but less than 75%, no If the coronary angiogram shows that the stenosis is greater than 50% but less than 75% and there is no evidence of severe ischemia, only medication is needed. If the coronary angiogram shows a coronary stenosis greater than 75% and there is evidence of ischemia, it is recommended to place a stent. 2. If you put a stent, you will not be able to do it, never put a stent A: In the clinic, you often hear this sentence, and it is scary to see the expression of the patient’s family, as if the stent is the devil. In fact, the stent is for better treatment of coronary heart disease, so that patients have a better life, if the blood vessels are severely narrowed or acute occlusion, the need to let the coronary artery stenosis or occlusion of blood flow, improve the symptoms of angina, prevent plaque rupture, improve the long-term prognosis of the myocardium. It is like a blocked canal, if not open the canal, the crop will not get enough water, the crop seedlings will not grow well is a reason. 3. After the stent is released, the disease will be cured, so there is no need to continue to take medication, right? Coronary artery disease is a chronic disease, so it is necessary to continue medication to prevent stenosis or occlusion of other parts of the blood vessel, and secondly, the intima of the blood vessel is damaged recently after the stent is put in, and the intima of the blood vessel grows around the stent later, so in order to prevent acute thrombosis and restenosis in the stent, it is more necessary to strictly medicate and not to stop medication without authorization! We can see that many people who are re-admitted to the hospital after stenting will have recent restenosis or even acute intra-stent thrombosis leading to myocardial infarction, which is life-threatening! 4. How long does the stent last? A: The stent is made of alloy, and the blood vessel is not that strong, so it will not break generally. However, there is a possibility of restenosis in the stent, and the main stent will have intimal hyperplasia wrapped around the stent after placement, so it is necessary to strictly follow the prescribed medication given by the doctor to prevent excessive intimal hyperplasia and regular review. 5. stents are not done in foreign countries long ago, and those done in China are fraudulent A: Big mistake, stents are invented by foreigners, and most of the current guidelines and clinical studies on stent implantation for angina pectoris and acute myocardial infarction are also done by foreigners, so this is nonsense.