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Antiplatelet and antithrombotic therapy in unstable angina

P Théroux1

  • 1Montreal Heart Institute, Quebec, Canada.

The American Journal of Cardiology
|September 3, 1991
PubMed

Insights

Aspirin and heparin significantly reduce coronary events in unstable angina patients. However, their high failure rates necessitate ongoing research for more effective antiplatelet and antithrombotic therapies.

Area of Science:

  • Cardiology
  • Pharmacology
  • Clinical Trials

Background:

  • Unstable angina presents a significant risk for coronary events.
  • Current antiplatelet and antithrombotic therapies offer partial efficacy.

Purpose of the Study:

  • To evaluate the efficacy of aspirin and heparin in managing unstable angina.
  • To assess the benefits of these drugs across different disease phases and compare their effectiveness.

Main Methods:

  • Analysis of 4 well-controlled clinical trials for aspirin efficacy.
  • Review of 4 clinical trials examining the acute use of heparin.

Main Results:

  • Aspirin demonstrated consistent reduction in coronary events across acute, subacute, and chronic phases.
  • Heparin provided substantial acute benefits, outperforming aspirin in reducing event rates and refractory angina.
  • Benefits of aspirin were observed across various doses and protocols.

Conclusions:

  • Aspirin is effective in reducing coronary events in unstable angina.
  • Heparin offers significant acute advantages over aspirin in managing unstable angina.
  • Further research is crucial for developing superior antiplatelet and antithrombotic agents due to current treatment limitations.

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