The physician orders an arterial blood gas (ABG) for a client receiving oxygen at 6 L/minute. Results show: pH 7.37, HCO3 26 mEq/L, PaCO2 42 mm Hg, PaO2 90 mm Hg. The nurse should take which of the following actions?
1. Increase the rate of oxygen flow that the patient is receiving.
2. Elevate the head of the bed.
3. Document the results in the chart.
4. Instruct the patient to cough and deep breathe.