Maquet SERVO-i, User Manual

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Servo… User´s manual
English edition
Order No: 65 14 892 E313E
Infant Adult Universal Options
4.3 Patient Circuit Test
In Standby mode, the Patient Circuit Test
may be performed separately from the Pre-
Use Check. This is useful, for example, when
changes are made to the circuit or additional
accessories are connected. The test
evaluates circuit leakage and measures the
circuit compliance.
1. Press the Patient circuit test touch pad
and follow the on-screen instructions.
WARNINGS!
• A Pre-Use Check must always be done
before connecting the ventilator to a
patient.
• The Patient Circuit Test does not replace
the Pre-Use Check.
Note: Considerable leakage may occur
around the endotracheal tube if it is
uncuffed. The combination of small tidal
volumes, leakage around the tube, and
activated compliance compensation may
trigger the Low Expiratory Minute Volume
alarm due to a very low expiratory flow
passing from the patient through the
expiratory channel. By observing the
difference between the Vti and Vte values
presented on the user interface, a leakage
can be detected and its extent easily
controlled. The first time an unacceptably
large leakage occurs around the tube,
correct this problem to avoid triggering the
Low Expiratory Minute Volume alarm. If the
leakage persists, adjust the alarm limit
down to its lowest level (10 ml)—if this step
is clinically appropriate. Finally, if the
leakage still has not been remedied,
deactivate the compliance compensation to
avoid triggering the alarm. If the compliance
compensation is deactivated while in
Pressure Control, Pressure Support, or SIMV
(Pressure Control) ventilation modes, then
no further settings need to be adjusted.
However, in volume-related modes, the set
volumes must be adjusted.
SVX-9042