A patient on 4 L/min of oxygen by nasal cannula has an arter…
A patient on 4 L/min of oxygen by nasal cannula has an arterial blood gas performed. The patient has normal work of breathing, with a respiratory rate of 23 breaths/min. The arterial blood gas indicates a pH of 7.40, PaO2 = 92 mm Hg, and PaCO2 = 42 mm Hg. Which of the following is most appropriate?