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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.


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