A nurse is caring for a patient with increased intracranial pressure (ICP). The patient's most recent ICP reading is 22 mmHg. Which of the following actions should the nurse take immediately?

Increase the patient's head of bed to 30 degrees.

Administer an osmotic diuretic as ordered

Administer high-dose corticosteroids to reduce brain swelling.

Administer pain medications to relieve discomfort.