Correct Answer: C

Rationale: Elevating the head of the bed in a child with hydrocephalus can potentially increase intracranial pressure. This can be counterproductive and may lead to complications after shunt placement surgery. Keeping the head of the bed flat or slightly elevated is often recommended to optimize cerebral perfusion and reduce the risk of increased intracranial pressure.

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: D

Rationale: The 18-month-old child with tachypnea is at the highest risk for dehydration due to increased insensible water loss associated with rapid breathing.

Correct Answer: A

Rationale: Furosemide (Lasix) is a loop diuretic that acts on the ascending loop of Henle in the kidney to increase calcium excretion. In the setting of hypercalcemia, where there is an elevated level of calcium in the blood, Furosemide can help promote the elimination of excess calcium through the urine, thereby aiding in the management of hypercalcemia.

Correct Answer: B

Rationale: Metabolic alkalosis is the priority complication to consider when a neonate with a diaphragmatic hernia is placed on gastric suction. Prolonged gastric drainage can lead to the loss of stomach acids, resulting in metabolic alkalosis, which can have serious consequences for the neonate's health.