Three medications are given to virtually every newborn in the first hour of life, and the nurse must know the rationale, route, and safety monitoring for each. Erythromycin ophthalmic ointment prevents serious eye infection acquired during birth, phytonadione, or vitamin K, prevents hemorrhagic disease of the newborn, and the hepatitis B vaccine begins protection against hepatitis B. These are high-yield because their routes and administration rules are precise and frequently tested. Each medication corrects a specific newborn vulnerability. The eyes are exposed to maternal organisms during vaginal birth, the gut is sterile and cannot yet make vitamin K, and the newborn benefits from early hepatitis B immunization. Getting the route and technique right is what makes them effective and safe. Consider a case: you are the nurse who has just instilled erythromycin ointment into a newborn's eyes when the parent asks you to wipe the baby's eyes clean. Which action is correct? You explain that you will not flush or wipe the eyes, because the ointment must remain in the conjunctival sac to work, and you continue with the vitamin...