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Carotid stenosis, X-ray of the left artery
Carotid stenosis, X-ray of the left artery

Carotid stenosis, X-ray of the right artery
Carotid stenosis, X-ray of the right artery

Arterial tear in internal carotid artery
Arterial tear in internal carotid artery

Atherosclerosis of internal carotid artery
Atherosclerosis of internal carotid artery

Arterial plaque build-up
Arterial plaque build-up

Carotid artery surgery - series
Carotid artery surgery - series

Carotid artery surgery


Carotid artery surgery is a procedure to restore proper blood flow to the brain.

The carotid artery brings needed blood to your brain and face. You have one of these arteries on each side of your neck. Blood flow in this artery can become partly or totally blocked by fatty material called plaque. This can reduce the blood supply to your brain and cause a stroke.

There are two procedures to treat a carotid artery that has plaque buildup in it. This article focuses on a surgery called endarterectomy. The other method is called angioplasty with stent placement .

Alternative Names:

Carotid endarterectomy; CAS surgery; Carotid artery stenosis - surgery; Endarterectomy - carotid artery


During carotid endarterectomy:

  • You receive general anesthesia . You are asleep and pain free. Some hospitals use local anesthesia instead. Only the part of your body being worked on is numbed with medicine so that you do not feel pain. You are also given a medicine to help you relax.
  • You lie on your back on an operating table with your head turned to one side. The side your blocked carotid artery is on faces up.
  • The surgeon makes a cut (incision) on your neck over your carotid artery. A flexible tube (catheter) is put in the artery. Blood flows through the catheter around the blocked area during surgery.
  • Your carotid artery is opened. The surgeon removes the plaque inside the artery.
  • After the plaque is removed, the artery is closed with stitches. Blood now flows through the artery to your brain.
  • Your heart activity will be monitored closely during surgery.

The surgery takes about 2 hours. After the procedure, your doctor may do a test to confirm that the artery has been opened.

Why the Procedure Is Performed:

This procedure is done if your doctor has found narrowing or a blockage in your carotid artery. Your doctor will have done one or more tests to see how much the carotid artery is blocked.

Surgery to remove the buildup in your carotid artery may be done if the artery is narrowed by more than 70%. 

If you have had a stroke or temporary brain injury, your doctor will consider whether treating your blocked artery with surgery is safe for you.

Other treatment options your doctor will discuss with you are:

  • No treatment, other than tests to check your carotid artery every year.
  • Medicine and diet to lower your cholesterol.
  • Blood-thinning medicines to lower your risk of stroke. Some of these medicines are aspirin, clopidogrel (Plavix), and warfarin (Coumadin).

Carotid angioplasty and stenting is likely to be used when carotid endarterectomy would not be safe.


Risks of anesthesia are:

Risks of carotid surgery are:

  • Blood clots or bleeding in the brain
  • Brain damage
  • Heart attack
  • More blockage of the carotid artery over time
  • Seizures
  • Stroke  
  • Swelling near your airway (the tube you breathe through)
  • Infection

Before the Procedure:

Your doctor will do a thorough physical exam and order several medical tests.

Tell your doctor or nurse what medicines you are taking, even medicines, supplements, or herbs you bought without a prescription.

During the 2 weeks before your surgery:

  • A few days before the surgery, you may need to stop taking medicines that make it harder for your blood to clot. These include aspirin, ibuprofen (Advil, Motrin), clopidogrel (Plavix), naprosyn (Aleve, Naproxen), and other drugs like these.
  • Ask your doctor which medicines you should still take on the day of your surgery.
  • If you smoke, you need to stop. Ask your doctor or nurse for help quitting.
  • Tell your doctor about any cold, flu, fever, herpes breakout, or other illness you may have before your surgery.

Follow instructions on when to stop eating and drinking before surgery.

On the day of your surgery:

  • Take any medicines your doctor prescribed with a small sip of water.

Follow instructions on when to arrive at the hospital. Be sure to arrive on time.

After the Procedure:

You may have a drain in your neck that goes into your incision. It will drain fluid that builds up in the area. It will be removed within a day.

After surgery, your doctor may want you to stay in the hospital overnight so that nurses can watch you for any signs of bleeding, stroke, or poor blood flow to your brain. You may be able to go home the same day if your operation is done early in the day and you are doing well.

Follow instructions  on how to take care of yourself at home.

Outlook (Prognosis):

Carotid artery surgery may help lower your chance of having a stroke. But you will need to make lifestyle changes to help prevent plaque buildup, blood clots, and other problems in your carotid arteries over time. You may need to change your diet and start an exercise program, if your doctor tells you exercise is safe for you. It is also important to stop smoking.


Arnold M, Perler BA. Carotid artery. In: Cronenwett JL, Johnston KW, eds. Rutherford's Vascular Surgery. 8th ed. Philadelphia, PA: Elsevier Saunders; 2014:chap 100.

Beaulieu RJ, Abularrage CJ. Carotid endarterectomy. In: Cameron JL, Cameron AM, eds. Current Surgical Therapy. 11th ed. Philadelphia, PA: Elsevier Saunders; 2014:811-818.

Daly C, Rodriguez HE. Carotid artery occlusive disease. Surg Clin N Am. 2013;93:813-832. Available at: .

Society for Vascular Nursing. 2009 Clinical practice guideline for patients undergoing carotid endarterectomy (CEA). J Vasc Nurs. 2010;28:21-46.

Review Date: 6/1/2015
Reviewed By: Daniel Kantor, MD, Kantor Neurology, Coconut Creek, FL and Immediate Past President of the Florida Society of Neurology (FSN), Gainesville, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

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