A young female sustains a severe head injury as the result of a motor vehicle crash. In the emergency department, her GCS is 6, blood pressure is 140/90 mm Hg, and her heart rate is 80 beats per minute. She is intubated and mechanically ventilated. Her pupils are 3 mm in size and equally reactive to light. There is no other apparent injury. The most important principle to follow in the early management of her head injury is to: Select one: a. b. C. d. e. avoid hypotension administer an osmotic diuretic aggressively treat systemic hypertension reduce metabolic requirements of the brain distinguish between intracranial hematoma and cerebral edema