Correct Answer: C

Rationale: Malformed or low-set ears are often associated with congenital urinary tract anomalies, as both the ears and kidneys develop around the same time during fetal growth. Myelomeningocele, cardiovascular anomalies, and lower extremity defects are less commonly associated with UT anomalies.

Correct Answer: A

Rationale: In the case of severe isotonic dehydration, the initial fluid of choice is 0.9% normal saline. This solution is preferred because it helps to restore both fluids and electrolytes effectively. Options B, C, and D are not suitable for the initial management of severe isotonic dehydration. D5 0.2% (1/4) normal saline (Choice B) is a hypotonic solution and might worsen the imbalance. D5W (Choice C) is a hypotonic solution that does not contain electrolytes essential for rehydration. Albumin (Choice D) is a colloid solution used for specific indications like hypoproteinemia or hypoalbuminemia, not for initial rehydration in severe dehydration.

Correct Answer: B

Rationale: Showing the child the equipment before the procedure helps build trust and reduces fear. Using an 18-gauge needle is too large for a child, and multiple attempts can increase trauma. Restraining completely can increase fear and anxiety.

Correct Answer: B

Rationale: Mixing activated charcoal with a flavorful beverage in an opaque container can help mask the taste and encourage the child to ingest it. Using an opaque container can prevent the child from seeing the unappealing appearance of the charcoal mixture, increasing compliance.

Correct Answer: D

Rationale: The correct answer is D because screaming and thrashing his arms and legs are indicative behaviors of discomfort or pain in young children. The child's actions suggest a higher likelihood of experiencing postoperative pain and necessitate further evaluation. Choices A, B, and C do not exhibit overt signs of distress or discomfort associated with pain, making them less likely candidates for postoperative pain assessment.