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?

Mechanical ventilation is used to support or replace spontaneous breathing in clients with respiratory failure. Safe and effective management requires not only maintaining adequate oxygenation and ventilation but also preventing complications such as ventilator-associated pneumonia, pressure injuries, malnutrition, and prolonged sedation. Care is multidisciplinary and includes weaning readiness assessments, skin integrity protection, treatment of the underlying cause of respiratory failure, and metabolic support.

Rationale:
A. Conducting spontaneous awakening and breathing trials as prescribed is essential because it helps assess readiness for weaning from mechanical ventilation. These trials reduce sedation and evaluate the client’s ability to breathe independently. They decrease ventilator dependence and improve outcomes by promoting earlier extubation when appropriate.

B. Frequent repositioning to prevent pressure ulcers is necessary because immobility during mechanical ventilation increases the risk of skin breakdown. Regular turning improves circulation, reduces prolonged pressure on bony prominences, and prevents pressure injuries. It also supports lung expansion and helps reduce the risk of ventilator-associated pneumonia.

C. Assessing and managing the underlying cause of respiratory failure is a priority because mechanical ventilation is supportive rather than curative. Treating the root cause—such as pneumonia, sepsis, or trauma—improves the likelihood of recovery and successful weaning. Without addressing the underlying condition, respiratory failure may persist or worsen.

D. Providing nutritional support due to increased metabolic demands is essential because mechanically ventilated clients often experience a hypermetabolic state. Adequate nutrition supports immune function, tissue repair, and respiratory muscle strength. Enteral feeding is preferred when possible to maintain gut integrity and reduce infection risk.

E. Administering sedatives and paralytics without assessing pain levels is unsafe and incorrect practice. Sedation and neuromuscular blockade should be carefully titrated based on ongoing assessment of pain, comfort, and ventilator synchrony. Over-sedation can delay weaning, mask complications, and increase the risk of prolonged mechanical ventilation.

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.