Correct Answer: B

Rationale: Choanal atresia is a congenital condition characterized by the blockage of the nasal passages, specifically the choanae that connect the nasal cavity to the nasopharynx. The nurse should assess the nasopharynx to identify any obstruction, confirm the diagnosis, and assess the severity of the condition. Choices A, C, and D are incorrect as they do not pertain to choanal atresia. Choanal atresia specifically involves the nasal passages and nasopharynx, not the rectum, intestinal tract, or laryngopharynx.

Correct Answer: B

Rationale: The nurse's best response is to allow the tantrum to continue until it ends without giving in to the child's demands. By not rewarding the child with the desired item during a tantrum, the child learns that this behavior is not effective in getting what they want. Offering a toy to distract the child (Choice A) may reinforce the idea that tantrums lead to rewards. Leaving the child with a babysitter (Choice C) does not address the issue at hand, which is teaching the child appropriate behavior in public places. Giving the child the item temporarily (Choice D) may encourage the child to have tantrums in the future to obtain desired items.

Correct Answer: B

Rationale: The priority nursing intervention for a child with acute lymphoblastic leukemia (ALL) is preventing infection due to their compromised immune system. Children undergoing treatment for ALL are highly susceptible to infections, making infection prevention crucial for the child's well-being and treatment success. Administering antibiotics, though important in specific cases, is not the priority in this scenario. Providing nutritional support and managing pain are significant aspects of care but take a back seat to infection prevention in this situation.

Correct Answer: B

Rationale: The correct answer is B. Tap water enemas can cause significant fluid and electrolyte imbalances, particularly in infants, making them unsafe for this age group. Choice A is incorrect because tap water enemas do not directly lead to loss of necessary nutrients. Choice C is incorrect as it focuses on emotional impact rather than physiological risks. Choice D is incorrect as shock from a sudden drop in temperature is not a common consequence of a tap water enema in this scenario.

Correct Answer: D

Rationale: Severe joint pain is a classic symptom of rheumatic fever, resulting from inflammation of the joints. Rheumatic fever primarily affects the joints, heart, skin, and the central nervous system. Jaundice (Choice A) is not typically associated with rheumatic fever. Peeling skin on the hands and feet (Choice B) is more characteristic of conditions like Kawasaki disease. While high fever (Choice C) can be present in rheumatic fever, it is not as specific or characteristic as severe joint pain.