If the coronary artery stenosis reaches a severe level and is accompanied by myocardial ischemia, cardiac stent implantation is required. After stent implantation, the blood supply to the narrowed area can be restored, and the symptoms of ischemia can be relieved. At the same time, in order to avoid the recurrence of myocardial ischemia, medication is also needed, such as taking antiplatelet drugs such as aspirin, or lipid-lowering medications such as Rosuvastatin for hyperlipidemia, and vasodilators such as nitroglycerin for the symptoms of myocardial ischemia. However, the specific surgery and medication need to be chosen according to the doctor’s guidance, and it is recommended to consult the doctor in time.