A 39-yeаr-оld pаtient whо is mоrbidly obese is аdmitted to the ED with fever, productive cough, and shortness of breath. The patient's vital signs are stable and he is awake and alert. After initiation of bronchodilator therapy and antibiotics, results for serial blood gas analyses reveal: 10 AM 11 AMFIO2 0.21 0.50pH 7.28 7.22PaCO2 72 torr 85 torrPaO2 45 torr 56 torrHCO3- 34 mEq/L 35 mEq/LBE +5 mEq/L +4 mEq/LSaO2 (calc) 80% 89% The patient's clinical condition remains unchanged. Which of the following should a respiratory therapist do NEXT?
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