A 6-year-old child with hemophilia A has slipped on the ice and bumped his knee. The nurse should prepare to administer an

A. Injection of factor X: Factor X is not deficient in hemophilia A. Administering it would not correct the coagulation defect or prevent bleeding in this child. B. Intravenous infusion of iron: Iron is used to treat anemia, not acute bleeding episodes caused by coagulation factor deficiency. It would not address the immediate risk of joint or soft tissue hemorrhage. C. Intravenous infusion of factor VIII: Hemophilia A is caused by a deficiency of clotting factor VIII. IV administration of factor VIII replaces the deficient protein, promotes clot formation, and prevents excessive bleeding after trauma such as a knee injury. D. Intramuscular injection of iron using the Z-track method: IM injections are generally avoided in hemophilia patients due to the high risk of muscle hematoma. Iron would not stop active bleeding from a trauma-induced injury.