A client presents with symptoms of confusion, lethargy, and increased thirst. Laboratory tests reveal elevated serum calcium levels. Which intervention should the nurse prioritize based on the client's condition?

Hypercalcemia is a condition characterized by elevated serum calcium levels, which can affect neuromuscular, renal, and neurological function. Common manifestations include confusion, lethargy, dehydration, and increased thirst. Severe cases can lead to cardiac dysrhythmias and decreased level of consciousness. Management focuses on promoting calcium excretion, maintaining hydration, and preventing complications such as renal calculi and further neurological decline. Rationale: A. Encouraging fluid intake of 3 L daily is the priority intervention because increased hydration enhances renal perfusion and promotes urinary excretion of excess calcium. Fluids help dilute serum calcium levels and reduce the risk of kidney stone formation. Adequate hydration is one of the most effective initial strategies for managing mild to moderate hypercalcemia. B. Obtaining blood cultures is not indicated because hypercalcemia is not primarily caused by infection. Blood cultures are used to identify bloodstream infections and guide antibiotic therapy, which is unrelated to the management of elevated calcium levels. The client’s symptoms are metabolic rather than infectious in origin. C. Administering high-dose IV corticosteroids is not the first-line intervention for hypercalcemia. While steroids may be used in specific conditions such as malignancy-related hypercalcemia or vitamin D–mediated cases, they are not the immediate priority. Initial management focuses on hydration and promoting calcium elimination before pharmacologic escalation. D. Placing the client in a flat position is inappropriate and does not address hypercalcemia. Positioning does not influence calcium levels or enhance renal excretion. Additionally, a flat position may worsen comfort in a confused or lethargic client and does not contribute to correcting the underlying metabolic imbalance.