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Published on: March 15, 2022
Drug evaluation of clopidogrel in patients with ischemic stroke
Ameer E Hassan1, Haralabos Zacharatos, M Fareed K Suri
1University of Minnesota, Zeenat Qureshi Stroke Research Center, Department of Neurology, 82 - 100 Phillips Wangensteen Building, 420 Delaware Street SE, Minneapolis, Minnesota 55455, USA.
Insights
Clopidogrel effectively prevents ischemic events in cardiovascular patients. Current evidence is insufficient for acute ischemic stroke, but it shows promise as an aspirin alternative, requiring further research.
Area of Science:
- Pharmacology
- Cardiovascular Medicine
- Neurology
Background:
- Clopidogrel is a key antiplatelet agent for secondary prevention of ischemic events.
- It is used in cardiovascular, cerebrovascular, and peripheral vascular diseases.
Purpose of the Study:
- To review clopidogrel's role in ischemic stroke patients.
- To analyze existing data from randomized and pilot trials on its indications.
Main Methods:
- Analysis of clopidogrel's mechanism of action and pharmacology.
- Review of data from major Phase III trials (CAPRIE, MATCH) and pilot studies.
Main Results:
- Clopidogrel's role in secondary prevention is well-established by Phase III trials.
- Data for acute ischemic stroke and neurointerventional procedures is evolving.
- Insufficient data currently exists to recommend clopidogrel for acute ischemic stroke.
Conclusions:
- Clopidogrel may serve as a valuable alternative to aspirin.
- Further studies are needed to define its role in specific acute ischemic stroke patient groups.
Abstract:
Clopidogrel is an effective antiplatelet medication used for the secondary prevention of ischemic events in patients with various cardiovascular, cerebrovascular and peripheral vascular disease conditions. The objective of this paper is to discuss the role of clopidogrel in ischemic stroke patients and to review the existing data from randomized trials supplemented by pilot and mechanistic studies that supports these indications for its use. An analysis of the mechanism of action and pharmacology of clopidogrel is provided. After Phase III trials, such as the CAPRIE (Clopidogrel versus Aspirin in Patients at Risk of Ischemic Events) and MATCH (Management of Atherothrombosis with Clopidogrel in High-risk patients) trials, the role of clopidogrel in secondary prevention is well defined. The role of clopidogrel in acute ischemic stroke and neurointerventional procedures is evolving based on new pilot trials. At present, there is insufficient data to recommend the use of clopidogrel in acute ischemic stroke. Clopidogrel may be a valuable alternative to aspirin. However, more studies are required to assess the role of clopidogrel in selected patient groups with respect to acute ischemic stroke.
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