Correct Answer: B

Rationale: The most crucial statement to include when teaching a patient prescribed metronidazole (Flagyl) is to avoid alcohol consumption. Mixing metronidazole and alcohol can lead to a disulfiram-like reaction, causing severe symptoms such as nausea, vomiting, and headache. Therefore, it is essential to emphasize to the patient the importance of abstaining from alcohol while taking this medication to prevent adverse reactions.

Correct Answer: C

Rationale: It is essential to give insulin at room temperature to prevent discomfort during administration. Cold insulin can cause stinging and pain, which can be avoided by allowing the insulin to reach room temperature before administration. Storing insulin in the refrigerator is correct for long-term storage, but it should be brought to room temperature before use. Rotating injection sites is important to prevent lipohypertrophy, a condition characterized by fatty lumps that can develop if injections are consistently given in the same area. Administering insulin within 30 minutes of a meal is generally recommended to match the insulin peak action with the peak glucose levels after eating, but giving insulin at room temperature is more crucial to ensure comfort and proper absorption.

Correct Answer: D

Rationale: The correct answer is D because infants' kidneys are less developed compared to older children, making them less efficient at concentrating urine. This results in a lower specific gravity in infants. The other choices do not directly explain why the specific gravity is lower in infants.

Correct Answer: B

Rationale: The correct answer is B: Ileal conduit. The ileal conduit diverts urine to the colon, and the urine is excreted with the feces. Unlike urostomy, nephrostomy, and suprapubic placement, the ileal conduit does not require an external appliance, which can be less damaging to an adolescent's body image.

Correct Answer: A

Rationale: Positioning the newborn in a semi-Fowler position is appropriate as it helps prevent aspiration in suspected EA/TE fistula. This position helps reduce the risk of regurgitation and aspiration of gastric contents. Placing the newborn in a semi-Fowler position promotes the drainage of secretions and reduces the risk of complications while awaiting further assessment by the healthcare provider.