An adult patient in respiratory failure has the following blood gases on a nasal cannula at 5 L/min: pH = 7.20; PaCO₂ = 67 mm Hg; HCO₃^- = 27 mEq/L; PaO₂ = 89 mm Hg. The attending physician orders intubation and ventilatory support. What FIO₂ would you recommend to start with?

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The Answer of An adult patient in respiratory failure has the following blood gases on a nasal cannula at 5 L/min: pH = 7.20; PaCO₂ = 67 mm Hg; HCO₃^- = 27 mEq/L; PaO₂ = 89 mm Hg. The attending physician orders intubation and ventilatory support. What FIO₂ would you recommend to start with?

An Adult Patient in Respiratory Failure Has the Following Blood