Harmonizing the International Normalized Ratio (INR)
نویسندگان
چکیده
منابع مشابه
International Normalized Ratio ( Inr )
Prothrombin time can be measured roughly on whole blood as in neonates, but is more commonly measured from plasma. Blood is taken into a vacutainer containing liquid citrate. Citrate acts as an anticoagulant by consuming all the calcium in the sample. The blood is mixed and centrifuged to separate blood cells from the plasma. The plasma is placed in a coagulation machine which takes a sample of...
متن کاملSimplified method for international normalized ratio (INR) derivation based on the prothrombin time/INR line: an international study.
BACKGROUND The need to perform local International Sensitivity Index (ISI) calibrations and in particular the requirement for a manual method for prothrombin time (PT) determination, have proved to be obstacles to application of the WHO scheme for PT standardization. METHODS We used international normalized ratio (INR) derived with a set of only 5 European Concerted Action on Anticoagulation ...
متن کاملInterpreting the International Normalized Ratio (INR) in individuals receiving argatroban and warfarin.
The effects of argatroban, a direct thrombin inhibitor, on the International Normalized Ratio (INR), activated partial thromboplastin time (aPTT) and functional factor X during warfarin co-administration were established to provide means to interpret INRs during argatroban/warfarin co-therapy. Twenty-four subjects receiving warfarin (7.5 mg, day 1; 3-6 mg/day, days 2-10) and argatroban (1-4 mic...
متن کاملInternational normalized ratio.
Dear Madam, The P.T. assay, first described in 1935 by Quick et al. soon became the monitoring of oral anticoagulant therapy. The P.T. measures the affect of reduction in the Vit. K dependent coagulant factors II, VII and X. Because the Prothrombin Time Ratio (P.T.R.) is markedly affected by the activity of thromboplastin, the W. It helps to determine the intensity of anti-coagulation therapy b...
متن کاملExternal quality assessment of point-of-care International Normalized Ratio (INR) testing in Europe.
BACKGROUND Point-of-care testing (POCT) of prothrombin time, expressed as International Normalized Ratio (INR), is widely used to monitor patients in oral anticoagulation treatment. Guidelines recommend that POCT users should participate in an external quality assessment (EQA) scheme whenever available. The aim of this study was to investigate which European countries provide EQA for POCT INR a...
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ژورنال
عنوان ژورنال: American Journal of Clinical Pathology
سال: 2016
ISSN: 0002-9173,1943-7722
DOI: 10.1093/ajcp/aqv022