turning and repositioning the patient on his side.
suctioning the patient at least hourly.
Number 1 is correct.
Increasing ICP requires nursing intervention; the nurse should increase the rate of oxygen because hypoxia can worsen ICP. Elevating the head of the bed, repositioning the patient, and suctioning the patient are not recommended interventions for patients experiencing (or at risk for) ICP because they can actually increase the pressure.