Related Experiment Videos
[A study on anticoagulation for cardiovascular diseases using international normalized ratio (INR)]
1Department of Thoracic and Cardiovascular Surgery, Nayoro City Hospital, Japan.
Kyobu Geka. the Japanese Journal of Thoracic Surgery
|November 1, 1996
Summary
The International Normalized Ratio (INR) strongly correlates with the Thrombotest for monitoring warfarin anticoagulation. INR offers greater accuracy, especially with prolonged coagulation times, making it a recommended objective index.
Area of Science:
- Cardiology
- Hematology
- Clinical Pathology
Context:
- Assessing anticoagulation therapy in cardiovascular disease patients is crucial.
- Warfarin is a commonly prescribed anticoagulant.
- Monitoring therapeutic efficacy and safety requires reliable laboratory indices.
Purpose:
- To evaluate the correlation between the Thrombotest and the International Normalized Ratio (INR).
- To determine the accuracy of INR compared to Thrombotest in assessing anticoagulation.
- To recommend an objective index for anticoagulation monitoring.
Summary:
- A study of 85 cardiovascular outpatients on warfarin found a strong correlation between Thrombotest and INR values.
- The therapeutic range of Thrombotest (10-25%) corresponded to an INR of 2.29-3.60.
- INR demonstrated higher accuracy than Thrombotest, particularly in cases of prolonged coagulation time.
Impact:
- Recommends INR as a more accurate and objective index for anticoagulation monitoring.
- Facilitates consistent data comparison across different institutions.
- Enhances the standardization of warfarin therapy assessment.