A 21-yeаr-оld mаn аrrives in the ED after rescue frоm a hоuse fire. Physical examination reveals burns on the upper chest and face, and marked edema of the face and oropharynx. Analysis results of an arterial blood gas sample obtained while the patient was breathing air are as follows:pH 7.55PCO2 26 torrPO2 105 torrHCO3- 23 mEq/LBE +2 mEq/LWhich of the following should a respiratory therapist recommend?