Percent Predicted Peak Expiratory Flow

The maximal flow achieved during the maximally forced expiration initiated at maximum inhalation as a proportion of the predicted normal value. (NCI Thesaurus/CDISC)

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Percent Predicted Inspiratory Reserve Volume

The maximum volume of air a subject can inhale into the lungs after a tidal inhalation as a proportion of the predicted…

Percent Predicted Inspiratory Capacity

The maximum volume of air a subject can inhale into the lungs after a tidal exhalation (IRV plus TV) as a proportion…

Percent Predicted Forced Vital Capacity

Forced vital capacity as a proportion of the predicted normal value.

Percent Predicted Forced Inspiratory Volume in 1 Second

The volume of air that a subject can breathe in during the first second of inhalation after maximum exhalation as a proportion…

Percent Predicted Forced Inspiratory Flow Maximum

Forced inspiratory flow for a portion of the FVC curve at the point where the maximum portion of FVC is already inhaled…

Percent Predicted Forced Expiratory Volume in 6 Seconds

Forced expiratory volume in six seconds as a proportion of the predicted normal value.