Correct Answer: B

Rationale: The correct first action before administering tube feeding to an infant is to offer a pacifier. Providing a pacifier stimulates the sucking reflex, aiding in digestion and providing comfort to the infant. Irrigating the tube with water (Choice A) is not typically the initial step and could potentially introduce unnecessary fluid into the infant's system. Slowly instilling formula (Choice C) should only be done after ensuring the tube is appropriately placed. Placing the infant in the Trendelenburg position (Choice D) is not necessary for tube feeding and could pose risks such as aspiration.

Correct Answer: A

Rationale: The correct answer is to encourage the child to drink plenty of fluids. Encouraging adequate fluid intake helps to relieve symptoms and prevent dehydration in children with acute otitis media. A balanced diet (choice B) is important for overall health but is not specifically related to managing otitis media. While pain medication (choice C) may be prescribed, it should not be administered without medical advice. Applying warm compresses (choice D) is not typically recommended for acute otitis media as it can potentially worsen the condition by promoting bacterial growth.

Correct Answer: D

Rationale: While catheterization can be uncomfortable, it does not typically result in long-term psychological harm, and obtaining a sterile specimen is important for accurate diagnosis.

Correct Answer: D

Rationale: Maintaining NPO (nothing by mouth) status is essential before surgery for a patient with Hirschsprung disease to prevent aspiration. Administering antibiotics, ensuring bowel rest, and performing regular enemas are not the priority interventions before surgery for this condition. Administering antibiotics may be necessary in the postoperative period to prevent infection, ensuring bowel rest can be beneficial but is not the priority, and performing regular enemas is not typically recommended before surgery for Hirschsprung disease.

Correct Answer: B

Rationale: The correct way to prevent tinea pedis is by keeping the feet dry, especially between the toes, to decrease the risk of fungal infection. Choice A is incorrect as keeping the feet moist can promote fungal growth. Choice C is incorrect because nylon or synthetic socks can trap moisture, contributing to the growth of fungi. Choice D is incorrect as going barefoot in public, especially in areas like locker rooms, increases the risk of contracting tinea pedis.