An alert adult patient is receiving CPAP with PS of 5 cm H2O…

An alert adult patient is receiving CPAP with PS of 5 cm H2O and an FIO2 of 0.28.  The patient has a heart rate of 88 and a respiratory rate of 22. Blood gas analysis results are as follows: pH 7.43 PaCO2 35 torr PaO2  95 torr HCO3- 23 mEq/L BE -1 mEq/L Which of the following is a respiratory therapist’s most appropriate action?