Document Detail

Reversal of warfarin-induced hemorrhage in the emergency department.
MedLine Citation:
PMID:  22224125     Owner:  NLM     Status:  In-Data-Review    
Warfarin, an oral vitamin K antagonist, is used to prevent arterial and venous thromboembolism in patients suffering from a multitude of diseases. In 2004, 31 million warfarin prescriptions were dispensed in the United States. Warfarin inhibits the activation of the vitamin K-dependent clotting factors (Factors II, VII, IX, and X) and regulatory proteins (proteins C, S, and Z). It is one of the leading drugs implicated in emergency room visits for adverse drug reactions. Annually the frequency of bleeding complications associated with overanticoagulation is 15% to 20%, with fatal bleeds measuring as high as 1% to 3%. The most effective method of warfarin reversal involves the use of Four Factor Prothrombin Complex Concentrate (PCC), which is widely used throughout Europe but is unavailable in the United States. The current therapies available to emergency room physicians in the United States are fresh frozen plasma, recombinant Factor VIIa (rFVIIa), Factor Eight Inhibitory Bypassing Activity, or Three Factor PCC concomitantly administered with vitamin K. We review the advantages and disadvantages of these therapies and recommend Three Factor PCC with small doses of rFVIIa and with vitamin K in life-threatening situations if Four Factor PCC is unavailable.
Meena Zareh; Andrew Davis; Sean Henderson
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The western journal of emergency medicine     Volume:  12     ISSN:  1936-9018     ISO Abbreviation:  West J Emerg Med     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2012-01-06     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101476450     Medline TA:  West J Emerg Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  386-92     Citation Subset:  -    
Department of Emergency Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, California.
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