Then substitute an oral vitamin K1 preparation (Mephyton) at the same twice-daily dosage. Warfarin is a relatively short-acting rodenticide, and treatment for a total of 1 week usually is adequate.Īdminister an initial dose of Vitamin K1 (Aquamephyton, Merck, Sharp, Dohme), 2.2 mg/kg SC.įollow with a dose of 1.1 mg/kg SC, q 12h, until active bleeding subsides. Other vitamin K deficient states include: biliary obstruction, intrahepatic cholestasis, intestinal malabsorption and chronic oral antibiotic administration.
Vitamin K reverses the anticoagulant effect of rodenticides over a period of 24 to 48 hours from initiation of therapy.
It is often initiated pending test results, but maintenance of vitamin K is not indicated for patients having diagnoses of thrombocytopenia, hereditary factor deficiencies, or DIC.Īnticoagulant rodenticide toxicities are the most common cause of severe vitamin K deficiency in dogs and cats. Vitamin K therapy improves hemostasis in Vitamin K deficient patients.
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