Can I stop the medication after stent implantation? Coronary artery disease is an atherosclerotic lesion that occurs in the blood vessels of the heart. There are three main blood vessels in the heart, which send out many branch vessels like branches of a tree. New stenosis may occur. At the same time, stents can also be implanted in places where atherosclerosis has worsened, leading to in-stent restenosis. Therefore, for patients with coronary artery disease, do not think that if you have already implanted a stent in your coronary artery and your chest tightness and chest pain have improved, everything will be fine and you do not need to take medication. Medication is the cornerstone of improving atherosclerosis, and stent implantation is only a supplement to medication, never use stent implantation to replace medication.