Vitamin K (VK) deficiency (VKD) commonly causes coagulopathy across the age spectrum. The reduced form of VK is an essential cofactor for the post-translational γ-carboxylation of coagulation factors (Fs) II, VII, IX, and X; proteins C and S; and ... Vitamin K deficiency results from extremely inadequate intake or fat malabsorption. Risk of bleeding is increased by use of coumarin anticoagulants. Deficiency is particularly common among breastfed infants. It impairs clotting. Diagnosis is suspected based on routine coagulation study findings and confirmed by response to vitamin K . Treatment consists of vitamin K given orally or, when fat malabsorption is the cause or when risk of bleeding is high, parenterally. Vitamin K deficiency ... Vitamin K , like vitamins A, D, and E, is a fat-soluble vitamin , which dissolves in fat and is best absorbed when eaten with some fat. Good sources of vitamin K include green leafy vegetables (such as collards, spinach, and kale) and soybean and canola oils. Being vitamin K deficient affects the circulatory system, immune system, brain, and more. Learn how symptoms of vitamin K deficiency present.
