Endarterectomy for Stenosis of Less Than 50% Without Symptoms
Research shows that there is no benefit to having
endarterectomy if you have less than 50% stenosis (narrowing) and no symptoms,
such as a previous TIA or mild stroke.1
People in this group do not benefit from endarterectomy. They actually increase
their risk of stroke or death from surgery because of complications of the
procedure. For people with less than 50% stenosis who do not have symptoms, the
American Heart Association guidelines recommend treatment with
This group is
already at a lower risk for stroke than those with a higher degree of stenosis. So having surgery would not likely further reduce that risk. It would instead introduce
new risks linked with surgery.
North American Symptomatic Carotid Endarterectomy Trial
Collaborators (1991). Beneficial effect of carotid endarterectomy in
symptomatic patients with high-grade carotid stenosis. New England Journal of Medicine, 325(7): 445–453.
Biller J, et al. (1998). Guidelines for carotid
endarterectomy: A statement for healthcare professionals from a special writing
group of the Stroke Council, American Heart Association. Circulation, 97(5): 501–509. Also available online: http://circ.ahajournals.org/content/97/5/501.full.
Primary Medical Reviewer
E. Gregory Thompson, MD - Internal Medicine
Specialist Medical Reviewer
Karin M. Lindholm, DO - Neurology
Current as of
March 12, 2014
WebMD Medical Reference from Healthwise
March 12, 2014
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