AssessmentsObstructive lung diseases: Pathology review
USMLE® Step 1 style questions USMLE
A 61-year-old man comes to the clinic for a routine evaluation. He has had a chronic productive cough for the past 5 years, with occasional dyspnea and wheezing. He smoked a pack of cigarettes a day for 40 years, but stopped several months ago. Vitals are within normal limits. Physical examination reveals bilateral diffuse crackles and rales on chest auscultation. Pulmonary function testing (PFT) is performed, which confirms the diagnosis of chronic bronchitis-predominant chronic obstructive pulmonary disease. Which of the following PFT findings are most likely present in this patient?