Once the carotid artery is narrowed, the amount of blood delivered to the brain will be greatly reduced, resulting in some symptoms of ischemia, such as transient limb weakness, numbness, dizziness, loss of vision or diplopia, etc. Chronic cerebral ischemia will also cause dementia and memory loss, and if the plaque in the inner wall of the carotid artery slips, it will cause a blockage of the blood vessel and acute cerebral infarction. If the plaque in the inner wall of the carotid artery slips, it will cause blockage of the blood vessel and acute cerebral infarction. Such a situation is very dangerous, so patients with carotid stenosis must be detected, diagnosed and treated as early as possible. Treatment is all about better recovery, so when treating patients with carotid artery stenosis, appropriate treatment measures need to be taken according to the classification of carotid artery stenosis. If the stenosis rate reaches 50% or more, the patient needs to decide whether or not to undergo surgery according to his or her symptoms, and if the stenosis rate reaches 70% or more, immediate surgery is required. So, what are the indications for carotid endarterectomy? Generally speaking, the procedure can be performed if the stenosis rate is more than 50% and the symptoms are obvious. Currently, there are hospitals that perform carotid endarterectomy for the treatment of carotid stenosis and have achieved very good results. As a standard procedure for the treatment of carotid stenosis, endarterectomy is very safe and can effectively prevent the occurrence of cerebral infarction after the procedure.