A 67 year old woman presents to your clinic with a 7 month history of productive cough and wheeze on exertion. In the past 4 months the patient describes finding it difficult to keep up with their grandchildren. The patient is a current smoker, smoking one and a half packs per day for the past 24 years. On exam, the patient is slightly barrel-chested, has fair air entry bilaterally with a prolonged expiratory phase. You suspect this patient has COPD.


What test would you order to confirm your suspected diagnosis of COPD?

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Dr. David Keegan


Dr. Trevor Luk