How would your FEV1/FVC ratio be affected if your lips were not sealed on the mouthpiece...

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How would your FEV1/FVC ratio be affected if yourlips were not sealed on the mouthpiece during a test?

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The spirometry test measures the ratio of forced expiratory volume in 1secFEV1 to forced vital capacityFVC FEV1 is amount of air expired forcefully in 1 second FVC is the measure of amount    See Answer
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