Basics of Pulmonology
Quick practice
Question 1 of 5
A 34-year-old man comes to OPD because of a 3-month history of progressively worsening shortness of breath on exertion. He is concerned that he has asthma and would like to be started on albuterol. Which of the following findings is most likely to indicate a different diagnosis in this patient?
A
Inspiratory : expiratory ratio of 1:3 on auscultation
B
129% of the predicted diffusion capacity of the lung for carbon monoxide
C
Decrease in FEV; by 6% after administration of high-dose methacholine
D
Bipyramidal crystals measuring 50 um on sputum analysis
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