Indications for Carotid Endarterectomy

Symptomatic Carotid Stenosis

The American Heart Association recommends carotid endarterectomy for patients with recent ischemic stroke or TIA who have ipsilateral 70-99% carotid stenosis, ideally within 14 days of symptom onset, provided the surgical team maintains perioperative stroke/death rates below 6% 1
Patients with nondisabling stroke or TIA within the past 6 months and ipsilateral 70-99% carotid stenosis should undergo carotid endarterectomy urgently, with a 16% absolute risk reduction at 5 years compared to medical therapy alone 1, 2
The surgical team must demonstrate perioperative morbidity/mortality rates <6% for symptomatic patients 1, 3
Carotid endarterectomy may be offered to selected patients with 50-69% symptomatic stenosis, but benefits are substantially lower, with an absolute risk reduction of 4.6% at 5 years 1, 2

Carotid endarterectomy may be considered for highly selected asymptomatic patients with 60-99% stenosis only if perioperative morbidity/mortality is <3% 3, 4
Aggressive medical management is mandatory regardless of surgical decision, including antiplatelet agents, lipid-lowering medications, blood pressure management, diabetes control, smoking cessation, diet, and exercise 2, 4

Carotid endarterectomy is preferred over carotid stenting as the primary intervention, particularly for patients >70 years 1, 2
Stenting should only be performed by experienced interventionalists with audited perioperative stroke/death rates <5% 3, 4

All patients must receive intensive medical therapy regardless of whether revascularization is performed, including antiplatelet agents, lipid-lowering medications, blood pressure management, diabetes control, smoking cessation, diet, and exercise 1, 2

Carotid endarterectomy is not indicated for vertebral artery stroke, as it addresses carotid artery stenosis causing carotid territory ischemic events, not vertebral artery pathology 5, 6
Carotid endarterectomy is specifically indicated for symptomatic carotid artery stenosis causing anterior circulation events (carotid territory TIA or stroke) 5, 6

Eligible patients should undergo carotid endarterectomy as soon as possible after a carotid territory event, ideally within 2 weeks 5, 7
The benefit from surgery is greatest when performed within 2 weeks, with benefit declining rapidly as delay increases 6

Appropriate candidates for early carotid endarterectomy include those with nondisabling carotid artery territory ischemic stroke or TIA 5, 7
Patients with ipsilateral carotid stenosis 70-99% by NASCET criteria are also eligible for early carotid endarterectomy 5, 7
No evidence of intracranial hemorrhage on CT/MRI is required for carotid endarterectomy 5

Surgery must be performed by a specialist surgeon with perioperative stroke/death rates <6% for symptomatic patients 6
Outcomes should be routinely audited at the surgical center 5, 7

Antiplatelet therapy (aspirin plus dipyridamole or clopidogrel) is recommended for vertebral artery stroke 5
Anticoagulation is recommended if a cardioembolic source is identified (atrial fibrillation, valvular disease) 5, 7
Surgical revascularization of the carotid artery is not recommended for vertebral artery stroke 5, 6