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Pathophysiol Haemost Thromb. 2002 May-Jun;32(3):131-3.

Prospective assessment of a nomogram for the initiation of oral anticoagulation therapy for outpatient treatment of venous thromboembolism.

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  • 1Department of Medicine, London Health Sciences Centre, London, Ontario, Canada. michael.kovacs@lhsc.on.ca

Abstract

Venous thromboembolism is a common medical problem. Recently, the emphasis has been on a switch to outpatient low molecular weight heparin therapy. Previous warfarin nomograms have been developed only for inpatients. We prospectively assessed a warfarin initiation nomogram in 105 consecutive outpatients; the nomogram requires International Normalized Ratio (INR) testing on only days 3, 5, and 8. Eighty-three percent had a therapeutic INR by day 5 and 98% by day 8. There were no major bleeds and only 6 instances of INR >4.5. This outpatient warfarin nomogram appears to be safe and efficacious in obtaining timely therapeutic levels of warfarin and deserves further study.

Copyright 2002 S. Karger AG, Basel

PMID:
12372927
[PubMed - indexed for MEDLINE]
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