A 36-year-old man is taken to the emergency department after…

A 36-year-old man is taken to the emergency department after a motorcycle accident. He is unconscious and unresponsive. ABGs obtained while the patient is receiving oxygen via a nonrebreathing mask show the following: PaO2 = 48 mm Hg, PaCO2 = 90 mm Hg, pH = 7.10, and HCO3− = 27 mEq/L. Which of the following would the therapist recommend?