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Stroke and atherothrombosis: an update on the role of antiplatelet therapy
Andrei V Alexandrov1, Peter Alagona
1Comprehensive Stroke Center, University of Alabama, Birmingham, AL 35294-0017, USA. avalexandrov@att.net
Insights
Atherothrombosis causes ischemic events like stroke. This review examines oral antiplatelet agents, like aspirin and clopidogrel, for preventing recurrent atherothrombotic events, especially in stroke patients.
Area of Science:
- Cardiovascular Medicine
- Neurology
- Pharmacology
Background:
- Atherothrombosis underlies most acute ischemic events, including stroke, posing significant recurrence risks.
- Patients with atherothrombosis in one vascular area face heightened vulnerability to events elsewhere.
- High rates of diabetes and obesity in patients with prior cardiovascular events underscore the need for effective prevention.
Purpose of the Study:
- To review current guidelines for preventing atherothrombotic events.
- To focus on the role of oral antiplatelet agents in managing patients with ischemic stroke.
Main Methods:
- Review of existing literature and clinical guidelines on atherothrombosis prevention.
- Analysis of data from studies like the CHARISMA trial regarding antiplatelet therapy efficacy.
- Focus on oral antiplatelet agents, including dual therapy with aspirin and clopidogrel.
Main Results:
- Atherothrombosis is a major cause of ischemic stroke and cardiovascular events.
- Dual antiplatelet therapy (aspirin and clopidogrel) may benefit specific stroke patient populations, though not primary prevention.
- Oral antiplatelet agents are crucial for preventing recurrent atherothrombotic events.
Conclusions:
- Oral antiplatelet therapy is a cornerstone in preventing atherothrombotic events, particularly in patients with ischemic stroke.
- Further research may clarify optimal antiplatelet strategies for high-risk populations.
- Effective management of risk factors like diabetes and obesity is vital alongside antiplatelet therapy.
Abstract:
Atherothrombosis is responsible for most acute ischemic manifestations of atherosclerotic disease, including stroke. Individuals with evidence of atherothrombotic disease in one vascular bed have a significant risk of recurrence and show increased vulnerability over time for other manifestations elsewhere in the vasculature. Ischemic event rates for asymptomatic patients with multiple atherothrombotic risk factors appear to be similar to those in patients with documented cardiovascular disease. For example, diabetes mellitus and obesity are found at alarmingly high rates in patients with prior cardiovascular events, including stroke or transient ischemic attacks. Antiplatelet therapy is a key component of atherothrombotic event prevention. The results of the Clopidogrel for High Atherothrombotic Risk and Ischemic Stabilization, Management and Avoidance (CHARISMA) study showed that while dual antiplatelet therapy with aspirin and clopidogrel may not play a role in primary prevention, post hoc analysis alluded to the possibility of benefit for dual antiplatelet therapy in certain populations of stroke patients. We examined current recommendations for the prevention of atherothrombotic events, focusing on the role of oral antiplatelet agents in patients with ischemic stroke.
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