volume-time curve

volume-time curve

volume of an expelled breath plotted against time. This is the basic curve generated by so-called "simple spirometry."
References in periodicals archive ?
4,14) The steepest slope on the volume-time curve is used for manual measurements, whereas the largest slope averaged over an 80 ms period is used for computerised back-extrapolation.
These spirometers generally require greater expertise to operate, calibrate and maintain than the older volume-type spirometers, which measured volume directly and produced volume-time curves.
10, a poor volume-time curve was obtained by using direct pressure input method with two major discrepancies observed.
12 as seen in the free blow simulation where the direct pressure input gave a poor volume-time curve when compared with that measured experimentally with the two major discrepancies as discussed previously.