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Crescendo transient ischemic attacks: a surgical imperative. Veterans Affairs trialists
S E Wilson1, M R Mayberg, F Yatsu
1Department of Surgery, University of California, Irvine.
Journal of Vascular Surgery
|February 1, 1993
Summary
Carotid endarterectomy significantly reduced stroke and crescendo attacks in patients with symptomatic carotid stenosis compared to medical care alone. Surgical intervention effectively resolved disabling crescendo TIAs in medically treated patients.
Area of Science:
- Neurology
- Vascular Surgery
- Clinical Trials
Background:
- Cerebrovascular disease poses a significant risk for stroke.
- Internal carotid artery stenosis is a major cause of ischemic events.
- Symptomatic stenosis requires effective management strategies.
Purpose of the Study:
- To evaluate the efficacy of carotid endarterectomy versus best medical care for symptomatic internal carotid artery stenosis.
- To assess the impact of surgical intervention on reducing stroke and transient ischemic attacks (TIAs).
Main Methods:
- A randomized, prospective, multicenter trial involving 189 patients with >50% internal carotid artery stenosis and symptoms.
- Patients were assigned to either carotid endarterectomy plus best medical care (n=91) or best medical care alone (n=98).
Main Results:
- Carotid endarterectomy resulted in a significant reduction in stroke or crescendo attacks (7.7%) compared to medical care alone (19.4%) after 1 year (p=0.011).
- 12% of medically treated patients developed crescendo TIAs, which were effectively resolved by subsequent carotid endarterectomy.
- Crescendo TIAs, defined as disabling recurrent ischemic events, occurred within 3 months of initial symptoms.
Conclusions:
- Carotid endarterectomy is a superior treatment for symptomatic high-grade internal carotid artery stenosis.
- Prompt surgical intervention can prevent disabling crescendo TIAs and reduce stroke risk.
- Medical management alone is insufficient for patients with symptomatic carotid stenosis.