The physician prescribes IV mannitol for an unconscious patient. The nurse would expect the therapeutic effect of this drug to result in which outcome?

A. Decreased seizure activity: Mannitol does not have anticonvulsant properties. While reducing intracranial pressure may indirectly reduce seizure risk in some patients, its primary mechanism is not seizure control, so this is not the expected therapeutic outcome. B. Decreased inflammatory response: Mannitol does not act on inflammatory pathways. It is an osmotic diuretic and does not reduce inflammation in brain tissue or systemic conditions. Anti-inflammatory medications are used for that purpose. C. Decreased cerebral edema: Mannitol is an osmotic diuretic that draws water out of edematous brain tissue into the intravascular space, reducing intracranial pressure. This decrease in cerebral edema improves cerebral perfusion and oxygenation, which is the primary therapeutic goal in unconscious patients with increased intracranial pressure. D. Decreased cerebral metabolism: Mannitol does not directly alter cerebral metabolic rate. Interventions like hypothermia or sedatives affect cerebral metabolism, but mannitol’s effect is through osmotic fluid shifts rather than metabolic modulation.