The duration of cardiac stent surgery is usually around 1 hour, some patients with complicated conditions may take relatively longer, around 1 to 3 hours. The exact time cannot be determined, it needs to be based on the condition of the patient and the proficiency of the operator. Cardiac stent surgery time from preoperative preparation, anesthesia to the end of the operation usually takes about 1 hour. Some patients with complex medical conditions requiring multiple stents or with tortuous vessels that make catheter placement difficult take longer, possibly several hours. Cardiac stenting can resolve coronary artery stenosis, thus effectively relieving conditions such as myocardial ischemia and preventing myocardial infarction caused by myocardial ischemia. When the narrowing of the heart vessels is severe, stenting should be performed as early as possible to prevent sudden myocardial infarction.