In a pulmonary function test, a FEV₁/FVC ratio of 0.70 is A) considered normal. B) higher than normal. C) suggestive of airway obstruction. D) associated with a high VO₂ max.

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Quizplus · Accepted Answer

A FEV1/FVC ratio of 0.70 or less is suggestive of airway obstruction, which is a characteristic of conditions such as asthma and chronic obstructive pulmonary disease (COPD). Values higher than 0.70 are considered normal. A high VO₂ max is not necessarily associated with this ratio and is not relevant to the interpretation of the FEV1/FVC ratio.

In a Pulmonary Function Test, a FEV1/FVC Ratio of 0

In a Pulmonary Function Test, a FEV₁/FVC Ratio of 0