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Quality of INR control and outcomes following venous thromboembolism

Arlene M Gallagher1, Frank de Vries, Jonathan M Plumb

  • 1General Practice Research Database, Medicines and Healthcare products Regulatory Agency, London, UK.

Clinical and Applied Thrombosis/Hemostasis : Official Journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
|January 26, 2012
PubMed

Insights

Maintaining therapeutic anticoagulation levels (international normalized ratio [INR]) is crucial for reducing venous thromboembolism (VTE) recurrence and mortality. Achieving over 70% time in therapeutic range significantly lowers these risks.

Area of Science:

  • Medical research
  • Clinical practice
  • Pharmacology

Background:

  • Venous thromboembolism (VTE) poses a significant health risk.
  • Understanding anticoagulation patterns in real-world settings is essential.

Purpose of the Study:

  • To evaluate anticoagulation management following VTE.
  • To assess the impact of anticoagulation on VTE recurrence and mortality.

Main Methods:

  • Utilized the General Practice Research Database.
  • Matched VTE patients (18+ years) with three controls.
  • Analyzed international normalized ratio (INR) control and outcomes.

Main Results:

  • Mean time within therapeutic INR range was 57.0%.
  • VTE recurrence was lowest in patients with ≥70% time in therapeutic range (RR 0.50).
  • Higher time in therapeutic INR range correlated with reduced VTE recurrence and mortality.

Conclusions:

  • Optimal anticoagulation control (≥70% time in therapeutic INR range) is associated with better patient outcomes.
  • Effective INR management is key to minimizing VTE recurrence and associated deaths.
Abstract

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