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Expiratory peak flow
Use the flow sensor installed on the expiratory line to measure the
exhaled flow peak. At the beginning of the expiration, a flow peak
arises in correspondence with the expiratory valve opening and it
depends on the lung resistance and compliance
This measure, just like the previous one, is not related to specific
alarms thresholds, it only provides information on the ventilation
status.
Inspiratory peak flow
Use the flow sensors installed on the inspiratory line to measure that
maximum inhaled flow value (measured in l/min) and to view it on
the screen.
For this value there are no alarm limits but it can be used to gather
information on the ventilation status.
Leak
Shows the 'Leak' value measured that must be adequated to the
ventilation mode enabled (volumetric or pressometric) and within the
range in compliance with the local regulations.
The unit of measurement is %.
Mean airways pressure
It shows the average calculated pressure for the airways: the unit of
measurement is cmH
O.
2
Oxygen consumption calculation
The oxygen consumption value in L/min is displayed after one
minute and in case of oxygen set value higher than 21%.
Pause pressure
It shows the pause pressure: the unit of measurement is cmH
O.
2
When the inspiratory pause enables, the lung ventilator maintains
the airway pressure constant (it maintains a pause pressure) for a
certain amount of time of the inspiratory time, defined by the User
(INSP PAUSE %). The static conditions allow the lung ventilator to
calculate the breathing mechanics parameters.
2-27
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