venTest OPERATORS MANUAL
Activate the selection by pressing the
'Apply'
button(5 - Figure 31). Pressing the
'Cancel'
button
(6 - Figure 31) discards the settings and the previous configuration remains valid, while the
display returns to the main menu.
4.12.2.1 'General' Button
Gas Type (1 - Figure 31)
The gas types (displayed) depend on the FlowSense sensor connected. Select the gas type used.
For gas types other than Air, a Flow Sensor with special calibration is required.
For AIR/Oxygen mixtures with the Oxygen % greater than 21%, a Hi or Low flow sensor with an
Oxygen calibration is required, along with an Oxygen sensor. For option availability please visit the
Datrend Website (
) or contact Datrend (see section 4.17.4).
2
2
For N O mixtures a Low flow sensor with an N O calibration is required. For option availability
please visit the Datrend Website (
) or contact Datrend (see section 4.17.4).
Invert Direction (2 - Figure 31)
The flow measurement direction is swapped. This leads to a sign change for the flow for displayed
values and graphs. Also, remember that ventilation related parameters
insp.
and
exp.
are
swapped; (sample: I/E changes from 1:0.5 to 1:2.0).
Averages values (3 - Figure 31)
This parameter defines how many values will be used to calculate an average value of :
Vti, Vte, Mvi, Mve, Freq, Ti, Te, Tip, Tep, I/E
If, as example, the value is set to 5, the average value is calculated from last 5 breaths.
Summary Trigger Settings (4 - Figure 31)
All actual trigger settings are displayed in this area. Trigger settings like value (pressure or flow),
slope and delay are shown for the start and end of inspiration and expiration.
Operation/Chapter 4
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