Which of the Following Pulmonary Function Values Characterizes an Obstructive

question 8

Multiple Choice

Which of the following pulmonary function values characterizes an obstructive lung disorder?
I. The forced vital capacity (FVC) is normal or decreased.
II. The forced expiratory volume in 1 second (FEV₁) is decreased.
III. The ratio of residual volume to total lung capacity (RV/TLC) is decreased.
IV. RV is increased.

• A) II and IV only
• B) I and III only
• C) I, II, and IV only
• D) II, III, and IV only

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