Correct Answer: A

Rationale: Seizures are a significant concern in severe hyponatremia as they indicate potential neurological complications and the need for urgent intervention to prevent further harm to the child. Prompt reporting of seizures allows for timely assessment and appropriate treatment to ensure the child's safety and well-being.

Correct Answer: C

Rationale: Spironolactone, a potassium-sparing diuretic, is the preferred choice in heart failure due to its cardio-protective effect, leading to reduced mortality in patients with heart failure. It is used to manage both hypertension and edema, making it a valuable option in heart failure treatment.

Correct Answer: B

Rationale: When fluconazole is taken with statins like simvastatin, it can increase the levels of the statin in the blood, potentially leading to adverse effects such as muscle pain and weakness. Therefore, the nurse should be concerned if the patient is taking simvastatin along with fluconazole.

Correct Answer: B

Rationale: Correct posture after feedings is crucial for an infant with gastroesophageal reflux to reduce the risk of regurgitation. Placing the infant upright helps prevent the backflow of stomach contents into the esophagus, minimizing symptoms of reflux.

Correct Answer: D

Rationale: A Z-score of -3.00 indicates that the child's performance is significantly below the average of their peers. It represents an extreme low score, indicating a substantial deviation from the mean performance of the group.