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Related Experiment Videos

Relationship between patients' warfarin knowledge and anticoagulation control.

Elaine Othilia Y L Tang1, Cemen S M Lai, Kenneth K C Lee

  • 1School of Pharmacy, The Chinese University of Hong Kong, Hong Kong.

The Annals of Pharmacotherapy
|December 31, 2002
PubMed
Summary
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Patient warfarin knowledge is poor, impacting anticoagulation control. Educational interventions are crucial, especially for elderly and illiterate individuals, to improve warfarin management and patient outcomes.

Area of Science:

  • Pharmacology
  • Patient Education
  • Clinical Pharmacy

Background:

  • Warfarin is a critical anticoagulant medication requiring careful management.
  • Effective anticoagulation control is essential for preventing thromboembolic events and bleeding complications.
  • Patient knowledge significantly influences adherence and therapeutic outcomes in warfarin therapy.

Purpose of the Study:

  • To assess patient comprehension of warfarin therapy.
  • To investigate the correlation between patient knowledge and anticoagulation control (INR levels).
  • To identify specific areas of knowledge deficit among warfarin users.

Main Methods:

  • A cross-sectional study involving 122 patients at a warfarin clinic in Hong Kong.
  • Interviews were conducted using a 9-question survey to evaluate warfarin knowledge and adherence.

Related Experiment Videos

  • International Normalized Ratio (INR) control was assessed based on the proportion of recent clinic visits within the target range.

    • Main Results:

    • Overall patient warfarin knowledge was poor, with an average score of 0.48.
    • Deficiencies were noted in understanding warfarin's effects, drug interactions, and managing missed doses.
    • Knowledge positively correlated with age and duration of therapy, and significantly improved in patients who read educational materials.

    Conclusions:

    • Patient warfarin knowledge is a key determinant of anticoagulation control.
    • There is a significant need for enhanced patient education, particularly for elderly and illiterate populations.
    • Targeted educational strategies can improve warfarin management and patient safety.