Which medication should a practical nurse prepare to administer to promote blood clotting?

Vitamin K is essential for the synthesis of clotting factors in the liver, which are crucial for proper blood coagulation. It plays a critical role in the coagulation cascade, helping to prevent excessive bleeding by promoting the formation of blood clots. Administering Vitamin K is particularly important in cases where there is a deficiency or if a patient is on anticoagulant therapy that has caused a decrease in clotting factor levels.

In contrast, medications like Warfarin and Aspirin are anticoagulants or antiplatelet agents that inhibit clotting rather than promote it. Warfarin works by inhibiting vitamin K-dependent clotting factors, while Aspirin prevents platelet aggregation, reducing the formation of clots. Heparin is also an anticoagulant that enhances the activity of antithrombin III, leading to a decrease in the clotting process. Therefore, among the options, Vitamin K is indeed the medication that promotes blood clotting effectively.