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Antithrombotic agents in cerebral ischemia

G W Albers1

  • 1Department of Neurology and Neurological Sciences, Stanford University Medical Center, California 94304-1704.

The American Journal of Cardiology
|February 23, 1995
PubMed
Summary

Choosing antithrombotic agents for cerebral ischemia depends on stroke cause. Antiplatelet drugs like aspirin are best for thrombotic stroke, while anticoagulants suit cardioembolic stroke. Hemorrhagic stroke generally contraindicates antithrombotics.

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Area of Science:

  • Neurology
  • Pharmacology
  • Cardiovascular Medicine

Background:

  • Antithrombotic agent selection for cerebral ischemia hinges on underlying pathogenesis: thrombosis, embolism, or hemorrhage.
  • Antiplatelet agents are favored for thrombotic stroke, anticoagulants for cardioembolic stroke, and antithrombotics are typically contraindicated in hemorrhagic stroke.

Purpose of the Study:

  • To review the efficacy and optimal use of antithrombotic agents in various types of stroke.
  • To discuss the role of antiplatelet agents, anticoagulants, and thrombolytics in stroke prevention and treatment.
  • To highlight ongoing research and controversies regarding antithrombotic therapy.

Main Methods:

  • Meta-analysis of 18 trials on antiplatelet agents for stroke risk reduction.
  • Review of current clinical data and ongoing studies on anticoagulants for cardioembolic and non-cardioembolic stroke.

Related Experiment Videos

  • Evaluation of emerging data on thrombolytics and direct thrombin inhibitors for stroke treatment.

    • Main Results:

    • Meta-analysis showed a 23% stroke risk reduction with antiplatelet agents; aspirin is a common choice, though optimal dosage is debated.
    • Anticoagulants are effective for cardioembolic stroke, but their role in non-cardioembolic stroke requires further investigation.
    • Thrombolytics show promise for reperfusion therapy within hours of stroke onset, with several direct thrombin inhibitors demonstrating experimental efficacy.

    Conclusions:

    • The choice of antithrombotic therapy must be tailored to the specific stroke subtype and pathogenesis.
    • Further research, including the Warfarin/Aspirin Recurrent Stroke Study, is needed to clarify optimal agent selection and dosage.
    • Emerging thrombolytic and direct thrombin inhibitor therapies offer potential advancements but require careful evaluation of hemorrhage risk.