Management of carotid artery stenosis. Update for family physicians.
OBJECTIVE
To clarify the definition of carotid artery diseases, the appropriateness of screening for disease, investigation and management of patients presenting with transient ischemic attacks, and management of asymptomatic carotid bruits. SOURCES OF INFORMATION MEDLINE: was searched using the terms carotid endarterectomy, carotid disease, and carotid stenosis. Most studies offer level II or III evidence. Consensus statements and guidelines from various neurovascular societies were also consulted.


RESULTS
Patients with symptoms of hemispheric transient ischemic attacks associated with >70% stenosis of the internal carotid artery are at highest risk of major stroke or death. Risk is greatest within 48 hours of symptom onset; patients should have urgent evaluation by a vascular surgeon for consideration of carotid endarterectomy (CEA). Patients with 50% to 69% stenosis might benefit from urgent surgical intervention depending on clinical features and associated comorbidity. Patients with <50% stenosis do not benefit from surgery. Asymptomatic patients with >60% stenosis should be considered for elective CEA.


CONCLUSIONS
Symptomatic carotid artery syndromes need urgent carotid duplex evaluation to determine the need for urgent surgery. Those with the greatest degree of stenosis derive the greatest benefit from timely CEA.
Louridas
George
G
University of Manitoba Health Sciences Centre. glourida@sbgh.mb.ca
Junaid
Asad
A
D000465:Algorithms; D016893:Carotid Stenosis / Q000150:complications / Q000175:diagnosis / Q000628:therapy; D005194:Family Practice; D006801:Humans; D002546:Ischemic Attack, Transient / Q000175:diagnosis / Q000209:etiology / Q000628:therapy; D020521:Stroke / Q000175:diagnosis / Q000209:etiology / Q000628:therapy