A spontaneous breathing trial was initiated on an intubated, awake, and alert 70 kg (154 lb) patient. After 30 minutes on an FIO2 of 0.30, ABG results are as follows: pH 7.39, PaCO2 44 torr, PaO2 85 torr, and HCO3- 24 mEq/L. The patient's vital signs have remained stable throughout the trial. Which of the following is the most appropriate recommendation?
A. Maintain current therapy.
B. Initiate NPPV.
C. Add 5 cm H2O CPAP.
D. Extubate the patient.
Answer: D. Extubate the patient.
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