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The Warfarin-Aspirin Symptomatic Intracranial Disease Study
M I Chimowitz1, J Kokkinos, J Strong
1Department of Neurology, University of Michigan Medical Center, Ann Arbor, USA.
Neurology
|August 1, 1995
Summary
Warfarin was more effective than aspirin in preventing major vascular events like stroke in patients with symptomatic intracranial artery stenosis. This study highlights warfarin
Area of Science:
- Neurology
- Cardiology
- Vascular Medicine
Background:
- Symptomatic stenosis of major intracranial arteries increases the risk of major vascular events.
- Effective prevention strategies are crucial for patients with intracranial artery stenosis.
Purpose of the Study:
- To compare the efficacy of warfarin versus aspirin in preventing major vascular events in patients with symptomatic intracranial artery stenosis.
Main Methods:
- Retrospective, multicenter study.
- Included patients with 50-99% intracranial artery stenosis and TIA or stroke.
- Compared warfarin and aspirin treatment groups.
Main Results:
- Warfarin group had a significantly lower rate of major vascular events (8.4/100 patient-years) compared to the aspirin group (18.1/100 patient-years).
- Kaplan-Meier analysis showed a higher percentage of patients free of major vascular events with warfarin (p = 0.01).
Conclusions:
- Warfarin demonstrated superior efficacy over aspirin in preventing major vascular events in this patient population.
- Warfarin may be a preferred treatment option for patients with symptomatic intracranial artery stenosis.