The client with increased intracranial pressure is receiving the osmotic diuretic mannitol (Osmitrol). Which data would cause the nurse to hold the administration of this medication? 1. The serum...

The client with increased intracranial pressure is receiving the osmotic diuretic mannitol (Osmitrol). Which data would cause the nurse to hold the administration of this medication?

1. The serum osmolality is 330 mOsm/kg.

2. The urine osmolality is 550 mOsm/kg.

3. The BUN level is 8 mg/dL.

4. The creatinine level is 1.8 mg/dL.