A client has been diagnosed with hyponatremia and is confused. Which intervention does the nurse include in the client's plan of care to relieve the confusion?

A. Placing the patient in Trendelenburg position: Trendelenburg positioning increases venous return and intracranial pressure, which can worsen cerebral edema. In hyponatremia, water shifts into brain cells due to decreased serum osmolality, leading to swelling and neurologic symptoms such as confusion. This position may exacerbate neurologic compromise rather than relieve it. B. Measuring intake and output every shift: Monitoring intake and output is important for evaluating fluid balance and guiding treatment of hyponatremia. However, it is a surveillance measure and does not directly address the underlying cerebral edema responsible for confusion. It supports management but does not provide immediate neurologic improvement. C. Increase the lactated ringer IV flow rate to 100 mL/hr: Lactated Ringer’s solution is isotonic and may not effectively correct hyponatremia, especially if the cause is dilutional. Increasing fluid administration can worsen hyponatremia by further diluting serum sodium, thereby increasing the risk of cerebral edema and worsening confusion. D. Administering mannitol as prescribed by the physician: Mannitol is an osmotic diuretic that increases plasma osmolality, drawing water out of edematous brain cells and reducing cerebral edema. In hyponatremia-associated confusion, this mechanism can help decrease intracranial pressure and improve neurologic status.