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Setting the device
With ongoing therapy the current status is displayed on the right-hand side by
means of different measured values.
6.2.1 Therapy
status
range
Parameter
Description
RR
Respiratory Rate. The number of breaths per minute, averaged over the
last five breaths.
I:E
I:E ratio. The ratio of inspiration to expiration. Calculated from the last
breath.
Vi
Tidal volume. The tidal volume is the integral of the measured patient
flow during inspiration.
MV
Breath minute volume. The breath minute volume is the volume of res-
piratory air that is inhaled and exhaled per minute. The breath minute
volume is calculated from the last five tidal volumes with the correspond-
ing breath frequencies.
LK
Leakage. The calculated flow that escapes through the leakage valve
and possible leaks at the mask.
Pressure
(hPa/cm H
²
O)
The current mask pressure is displayed. This is calculated from the
measured pressure and the pressure drop via the tube and if necessary
respiratory humidifier.