A 26-year-old 70-kg patient, who is in a diabetic coma, has…

A 26-year-old 70-kg patient, who is in a diabetic coma, has the following ventilator settings and blood gas results: SIMV 12/min, tidal volume = 850 mL, FIO2 = 40%pH = 6.82, PaCO2 = 38 mm Hg, PaO2 = 78 mm Hg, HCO − = 6 mEq/L. Based on the blood gas results the therapist should recommend: