5 Measurements
Note:
This window also displays the Pplat and Auto-PEEP results.
To start the static resistance and static compliance measurement:
•
Press the
[Measures]
key;
•
A new window opens with the
[R&C stat]
and
[P0.1]
functions.
The static R&C measurement can be performed automatically when required (--) or according to the
following frequencies (min): 1, 2, 3, 4, 5, 10, 20, and 30.
1.
Press on the ‘R&C stat’ set-point on the bottom row,
2.
Select the required value with the control wheel and press on the control wheel to validate.
To enable the function, press on the
[R&C stat]
key. The indicator light comes on and the measurement
begins. The following is displayed in the alarm banner: ‘R and C stat measurement enabled’.
Note:
Pressing on the
[R&C stat]
button again disables the function.
Measurement principle
The ventilator generates:
•
end-expiratory occlusion;
•
inspiration (consistent with the current mode), delivering a Vt;
•
end-inspiratory occlusion.
Note:
Inspiration between the two occlusions can be shortened to ensure that the flow rate
at end of inspiration is not zero. The measurement is interrupted in the event of Ppeak.
The Rstat and Cstat values result from the following calculations:
•
Cstat = VT / (Pplat – total PEEP);
•
Rstat = (Ppeak – Pplat) / end of inspiration flow rate.
Measurement accuracy is ± 20%.
Note:
This function is only available in VCV, PCV and PRVC. In these modes, the patient is
sufficiently passive for the end-inspiratory and end-expiratory occlusion pressures to be sta-
ble.
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Summary of Contents for MONNAL T75
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