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Related Experiment Videos

Anticoagulation after intracoronary stent insertion

M J Brack1, P J Hubner, A H Gershlick

  • 1Academic Department of Cardiology, University of Leicester, Glenfield General Hospital.

British Heart Journal
|September 1, 1994
PubMed
Summary

Stent thrombosis is rare within 24 hours. Heparin influences blood clotting and INR, necessitating up to 96 hours of heparin before warfarin initiation per protocol.

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Area of Science:

  • Cardiovascular medicine
  • Pharmacology

Background:

  • Stent thrombosis is a rare but serious complication.
  • Heparin affects the extrinsic coagulation pathway.
  • Heparin can interfere with the International Normalized Ratio (INR) monitoring.

Purpose of the Study:

  • To outline the rationale for a standard anticoagulation protocol.
  • To explain the evidence supporting the duration of heparin use with warfarin.

Main Methods:

  • Review of existing evidence on stent thrombosis.
  • Analysis of heparin's effect on coagulation pathways.
  • Consideration of prothrombin half-life in anticoagulation management.

Main Results:

  • Stent thrombosis is uncommon in the early post-implantation period.
  • Heparin's anticoagulant effects and potential INR interference are key considerations.
  • Prothrombin half-life informs the recommended duration of combined anticoagulation.

Conclusions:

  • The standard protocol is based on the understanding of heparin's effects and pharmacokinetics.
  • Anticoagulation with heparin for up to 96 hours is recommended before transitioning to warfarin.
  • This approach aims to optimize anticoagulation and minimize risks associated with stent implantation.

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