References in periodicals archive ?
The flow-volume loop is generated by continuously recording flow and volume with an electronic spirometer during a forced inspiratory and expiratory vital capacity maneuver.
This is evident by the measurable increase in the helium iso-flow or VisoV, which is located in the later part of the flow-volume loop with similar flow rates.
It becomes very evident that a patient is trying to change his spirometric results by observing the variation in flow-volume loop shape.
Our patient's pulmonary function tests demonstrated that the expiratory limb of flow-volume loops is flattened, while the inspiratory portion is unchanged.

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