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Warfarin-induced skin necrosis is a condition in which skin and subcutaneous tissue necrosis (tissue death) occurs due to acquired protein C deficiency following treatment with anti-vitamin K anticoagulants (4-hydroxycoumarins, such as warfarin). [1] Warfarin necrosis is a rare but severe complication of treatment with warfarin or related ...
Protein C is vitamin K-dependent. Patients with Protein C deficiency are at an increased risk of developing skin necrosis while on warfarin. Protein C has a short half life (8 hour) compared with other vitamin K-dependent factors and therefore is rapidly depleted with warfarin initiation, resulting in a transient hypercoagulable state.
Warfarin necrosis is an acquired protein C deficiency due to treatment with warfarin, which is a vitamin K antagonist and an anticoagulant itself. However, warfarin treatment may produce paradoxical skin lesions similar to those seen in purpura fulminans.
Warfarin should not be given to people with heparin-induced thrombocytopenia until platelet count has improved or normalised. [39] Warfarin is usually best avoided in people with protein C or protein S deficiency, as these thrombophilic conditions increase the risk of skin necrosis, which is a rare but serious side effect associated with ...
27973 Ensembl ENSG00000167397 ENSMUSG00000096145 UniProt Q9BQB6 Q9CRC0 RefSeq (mRNA) NM_001311311 NM_024006 NM_206824 NM_178600 RefSeq (protein) NP_001298240 NP_076869 NP_996560 NP_848715 Location (UCSC) Chr 16: 31.09 – 31.1 Mb Chr 7: 127.49 – 127.49 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse The human gene VKORC1 encodes for the enzyme, Vitamin K epOxide Reductase Complex ...
Protein C in plasma in the steady state has a half life of 6- to 10-hour, therefore, patients with severe protein C deficiency and presenting with purpura fulminans can be treated acutely with an initial bolus of protein C concentrate 100 IU/kg followed by 50 IU /kg every 6 hours. [7]
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Protein C deficiency, too, is present in 0.2% of the population, and can be found in 2.5–6% of people with thrombosis. The exact prevalence of protein S deficiency in the population is unknown; it is found 1.3–5% of people with thrombosis. [14] The minor ("type 2") thrombophilias are much more common.