Carotid endarterectomy

Carotid endarterectomy (CEA) is a surgical procedure aimed at treating carotid artery disease, a condition in which the carotid arteries, the main blood vessels supplying oxygenated blood to the brain, become narrowed or blocked. The narrowing is usually caused by the build-up of fatty deposits, cholesterol, and other substances, which forms a plaque in the arteries—a process known as atherosclerosis.

The purpose of a carotid endarterectomy is to remove the plaque from the affected carotid artery to restore normal blood flow to the brain. By doing so, the procedure reduces the risk of a stroke, which can occur when the blood supply to the brain is compromised.

Carotid endarterectomy is typically performed in patients who have a high-grade stenosis (severe narrowing) of the carotid artery, especially those who have experienced a transient ischemic attack (TIA) or a stroke. The procedure can prevent further neurological damage by restoring blood flow to the brain.

As a commonly performed neurosurgical procedure, carotid endarterectomy has been proven effective in reducing the incidence of stroke in patients with significant carotid artery disease. However, it requires careful evaluation of the patient's overall health, degree of arterial narrowing, and associated risks.

Carotid artery disease and the need for carotid endarterectomy are usually caused by atherosclerosis or the build-up of plaque in the arteries. There are several causes and risk factors associated with carotid artery disease, leading to the necessity for carotid endarterectomy.

The main cause of carotid artery disease is atherosclerosis, which is the gradual accumulation of plaque (fatty deposits, cholesterol, and other substances) inside the arteries. As the plaque builds up, it narrows the arteries, restricting blood flow to the brain. This restriction can lead to stroke or transient ischemic attacks (TIAs). If a stenosis (narrowing) exceeds 60-70%, carotid endarterectomy may be recommended to reduce the risk of stroke.

High blood pressure is a significant risk factor for the development of atherosclerosis. It accelerates the process of plaque formation by damaging the blood vessel walls. Over time, high blood pressure increases the risk of stroke, particularly when associated with other risk factors such as high cholesterol or smoking.

High cholesterol, especially low-density lipoprotein (LDL) or “bad cholesterol,” contributes significantly to the formation of plaque in the carotid arteries. Elevated cholesterol levels can lead to plaque buildup, narrowing the arteries and impeding blood flow.