Which of the following actions should the nurse take to help prevent increased intracranial pressure in a patient following a traumatic brain injury? 1. Cluster care so the patient can have long...

Which of the following actions should the nurse take to help prevent increased intracranial pressure in a patient following a traumatic brain injury?

1. Cluster care so the patient can have long periods of rest. 2. Keep the head of the bed elevated at 30 degrees. 3. Suction frequently to keep the airway clear. 4. Do not give anything by mouth.