Ventway Sparrow User Manual
Page 59 of 144
Volume Calibration:
For both VTi and VTe, the length of pushing/pulling the syringe handle fully
should be approximately one second while never passing a flow of +- 50 lpm.
IIf either one of the above-mentioned conditions is not met, the device will
not take into account the last push/pull and will not display it on the screen.
VTi and VTe are between 495-505 cc.
The use of a fixed volume 500 cc syringe provides an easy and accurate
solution for volume calibration. The user must move the syringe handle,
completing a cycle in one to two seconds, resulting in an average flow of 15 to
30 lpm. The calculated tidal volume is displayed for each stroke, and once the
tidal volumes (VTi and VTe) are between 490 to 510 cc, the user may finish the
calibration process by pressing the scroll knob.
Volume Calibration screen
The ventilator compensates for each stroke for tidal volume inaccuracies. The
tidal volume per stroke becomes closer to 500 cc, once it is automatically mul-
tiplied by a correction factor. At the beginning of each stroke, the ventilator
generates a sound, instructing the user to start moving the syringe handle.
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