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Asymptomatic contralateral carotid artery stenosis: a five-year follow-up study following carotid endarterectomy

, : Asymptomatic contralateral carotid artery stenosis: a five-year follow-up study following carotid endarterectomy. Surgery 88(6): 748-752

Exactly 5 years after carotid endarterectomy for transient ischemic attacks (TIAs), the neurologic status of each of 67 patients whose angiograms demonstrated a contralateral carotid artery, two of which were fatal. One of these patients suffered antecedent TIAs. Two of the 50 patients (4%) without contralateral carotid stenosis experienced symptoms referable to the contralateral carotid; one of the 50 (2%) suffered a CVA without antecedent TIAs; and one of the 50 (2%) experienced a single TIA. Patients with a demonstrable contralateral carotid stenosis were at greater risk of developing contralateral symptoms than those without a stenosis [14 of the 67 versus two of the 50 (P < 0.01)]. There was no correlation between the incidence of new symptoms and the degree of contralateral stenosis. The 3% (two of the 67) incidence of stroke without antecedent TIAs on follow-up in those patients with a contralateral carotid stenosis suggests the following guideline: patients with contralateral carotid stenosis suggests the following guideline: patients with contralateral carotid artery stenosis can be advised to undergo staged carotid endarterectomies if the surgeon's stroke and morbidity rate is less than 3%.


PMID: 7444758

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