A 61-year-old male patient is post-abdominal surgery and has been on a high-flow nasal cannula at 20 L/min for three days. The patient’s ABG results are as follows:

A 61-year-old male patient is post-abdominal surgery and has been on a high-flow nasal cannula at 20 L/min for three days. The patient’s ABG results are as follows:

pH 7.39

PaCO2 43 torr

PaO2 157 torr

SaO2 99%

HCO3 24 mEq/L

BE +2

Which of the following is the best action to take at this time?