A client is to receive mannitol IV for increased intracranial pressure. Which outcome may result from the use of mannitol?

A. Mannitol is an osmotic diuretic that pulls fluid into the intravascular space and promotes diuresis, so sustained hypervolemia is not expected. B. Mannitol does not significantly affect blood glucose levels; hyperglycemia is more commonly associated with corticosteroids or dextrose solutions. C. Mannitol causes fluid shifts from intracellular to extracellular spaces, which can dilute serum sodium and lead to hyponatremia. D. Mannitol increases urine output; decreased urine output would be an abnormal finding and may indicate renal impairment.