A 28-year-old male is brought to your helicopter after a motorcycle crash. He is unconscious with a Glasgow Coma Scale (GCS) of 6. Which of the following interventions is most appropriate to decrease the risk of secondary brain injury during transport?
Administering isotonic fluids to maintain blood pressure
Administering supplemental oxygen to maintain oxygen saturation between 94-98%
Hyperventilating the patient to maintain a PaCO2 of 25-30 mmHg
Elevating the head of the bed to 30 degrees