The carotid artery is a very important blood vessel in the human body. The blood to the brain is mainly supplied and delivered through the carotid artery so that the brain can function and work properly. However, for some reason, many people have narrowed carotid arteries, and the blood flow cannot be delivered in sufficient quantity or even blocked, which is very dangerous. Carotid stenosis is one of the most prevalent cerebrovascular diseases. Patients suffering from carotid stenosis may often feel dizziness, headache, weakness in the limbs, memory may gradually decline, and some patients may experience coma or even cerebral infarction. Carotid artery stenosis must not be taken lightly, and should receive regular treatment as soon as possible after the disease. The clinical treatment for carotid stenosis is mainly based on the degree of carotid stenosis, less than 50% of mild carotid stenosis can be treated by medication. If the degree of stenosis reaches more than 50%, it is already considered as moderate to severe carotid artery stenosis, at this time it may not be possible to achieve the desired effect by medication, and if necessary, surgical treatment is required according to the specific situation. At present, the more effective surgical method for the treatment of moderate to severe carotid stenosis is carotid endarterectomy, which is performed under a microscope and has high surgical safety, small incisions, and ideal postoperative recovery. Is carotid artery surgery a major surgery? Many patients have this question, but here it is important to tell you that carotid endarterectomy originated abroad and is a relatively safe procedure.