Fitting humidifier and ventilation hoses
● Prepare the "Fisher & Paykel MR 730" breathing
gas humidifier as specified in the Instructions for Use
of the humidifier.
Use the relevant hose set K (paediatric).
● Clamp the humidifier to the stand under the apparatus
and screw firmly into place.
● Clamp the articulated arm to the left-hand rail and
screw firmly into place.
● Fit the ventilation hoses.
Check the hose lengths (metres).
● Fit the water trap in the vertical position.
Do not place any liquid containers above or on top
of Evita 4!
Any leaking or spilled liquid could cause
malfunctions!
If using bacterial filters
The use of expiratory bacterial filters on the ventilator is
not recommended.
However, if bacterial filters are nevertheless used on the
expiration side, an undesirable increase in breathing
resistance is possible.
Especially during medicament nebulisation and
humidifying, the resistance of the bacterial filter may
increase gradually. For the patient, the effect may be
increased breathing effort and intrinsic PEEP.
An intrinsic PEEP can be recognised by the fact that the
expiratory flow does not return to "0" before the end of
expiration.
If PEEP is unacceptably high, the unit signals the
»PEEP high« alarm.
● Check the bacterial filter and replace it if it is the
cause of the PEEP.
35
Preparation
Ventilating Infants
If using bacterial filters
D Evita 4
0,6m
0,6m
0,4m
1,1m
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