4.7 Start case
Once a successful system checkout has been
performed, the system is ready to start a
patient case. Customize the case by defining
patient category, ventilation mode, ventilation
mode settings, and alarm limits. Press the
'start case' membrane button to start the case.
See Chapter 9, page 157, for more information.
Patient category selection is described in
Chapter 5, page 75.
Ventilation mode selection and parameter
settings are described in Chapter 5.
Alarm limit settings are described in Chapter
9, page 187.
WARNING! Ensure that all alarm limits and
ventilator settings are appropriately set
before connecting the system to the patient.
4.7.1 Compliance compensation
Part of the volume of each inspiration will not
reach the patient because of gas compression
in the anesthesia system and expansion of the
tubing. All components in the patient circuit
affect such losses.
When compliance compensation is calculated,
the delivered and measured volume and flow
values are automatically compensated for
these losses. The leakage test must be passed
in order for the system to calculate correct
compliance compensation. If the leakage test
is not passed, the default system value
(without patient tubing) for circuit compliance
compensation will be used.
The compliance compensation calculations
are made based on the current set-up of the
system, and are subject to changes to the
breathing system volume.
These calculations become obsolete when,
for example, patient tubings are changed (e.g.
from adult to infant), or if additional equipment
is installed which increases the breathing
system volume.
Update the system by performing a new
leakage check to ensure correct delivery of
gas flow.
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