A 68-Year-Old Man Comes to the Office Due to Progressive

A 68-year-old man comes to the office due to progressive dyspnea on exertion and nonproductive cough over the past year.  The patient now has dyspnea after performing common household chores.  He had asthma during childhood but otherwise had no respiratory symptoms until a year ago.  He has hypertension and osteoarthritis.  Medications include lisinopril and acetaminophen as needed.  The patient has never smoked and drinks alcohol on social occasions.  He travelled overseas extensively during his long career in the navy but has been retired for 8 years.  He has 2 dogs.  Temperature is 37 C (98.6 F) , blood pressure is 143/76 mm Hg, pulse is 93/min, and respirations are 20/min.  Oxygen saturation is 94% on ambient air.  BMI is 27 kg/m².  Neck veins are flat.  Lung auscultation reveals fine inspiratory crackles at the bases, and heart sounds are normal without murmur.  The abdomen is nontender without hepatosplenomegaly.  No extremity edema is present.  Which of the following sets of findings are most likely to be observed on pulmonary function testing of this patient?

A) A
B) B
C) C
D) D
E) E

Correct Answer:

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