Percent Predicted Forced Vital Capacity

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

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

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

The proportion of total forced vital capacity that is expelled during the first second of a forced exhalation as a proportion of…

Forced expiratory volume in one second as a proportion of the predicted normal value.

The maximum volume of air a subject can exhale from the lungs after a tidal exhalation as a proportion of the predicted…