A patient with asthma uses one puff twice daily of fluticasone and has an albuterol inhaler for PRN use. He requests a refill on his albuterol inhaler. His last prescription was filled 5 weeks ago. What action by the NP is appropriate?
a) Prescribe the albuterol refill
b) Instruct the patient to increase fluticasone use
c) Refer the patient to a pulmonologist
d) Perform spirometry before prescribing