flow-volume curve

flow-vol·ume curve

the graph produced by plotting the instantaneous flow of respiratory gas against the simultaneous lung volume, usually during maximal forced expiration.

flow-volume curve

a graphic of the instantaneous rate of airflow during a forced expiration. It is plotted as a function of the volume. It may be a maximum expiratory flow-volume curve or a partial expiratory flow-volume curve.

flow-vol·ume curve

(flō-volyūm kŭrv)
Graphic produced by plotting the instantaneous flow of respiratory gas against the simultaneous lung volume, usually during maximal forced expiration.
References in periodicals archive ?
Inspiratory flow-volume curve evaluation for detecting upper airway disease.
The PEF is obtained from flow-volume curve data, and should be reported.
1) are graphic displays produced by spirometers, and include volume-time curves (from both types of spirometers) and flow-volume curves (from newer flow-type spirometers).
It has been shown that maximum expiratory flow-volume curve (MEFVC) values measured by plethysmograph remain higher than values measured at the mouth.
Effect of thoracic gas compression on the flow-volume curve of the forced vital capacity.
Changes in the normal maximal expiratory flow-volume curve with growth and aging.
Calculated as a percentage and graphed as a time-volume curve or a flow-volume curve.
Expiratory flow-volume curves were recorded by a spirometer with a pneumotachograph sensor (Model ST90, Fukuda Sangyo Co.
Abnormal inspiratory flow-volume curves in patients with sleep-disordered breathing.
However, Mallory did not have a direct, automated way to monitor flow-volume curves remotely.
1] <85% and good flow-volume curves also were considered technically acceptable.
6) The authors provided no description of criteria for inadequate flow-volume curves, except to state that "the QA officer used the review software to inspect all flow-volume tracings from subjects with questionable performance, overriding the selection of the spirometer software algorithm of the `best' maneuver on rare occasions.

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