Information On Breathing Circuits And Additional Components - Dräger Savina 300 Instructions For Use Manual

Information on breathing circuits and additional components

Additional components in the breathing circuit can
increase the inspiratory and expiratory resistance
values and exceed standard requirements.
Examples of additional components:
– Bacterial filters, inspiratory and expiratory
– HME
– CO cuvette
2
– Coaxial hoses
CAUTION
Increased compliance or resistance
Additional components in the breathing circuit
such as bacterial filters, HMEs, or CO
increase dead space, compliance, and resistance
of the breathing circuit. Depending on the ventila-
tion mode, either the flow or the pressure rises.
When using additional components, particular
care and monitoring are required.
Using bacterial filters or HMEs
Savina 300 is designed to minimize the patient's
work of breathing. The use of bacterial filters or
HMEs requires particular care and monitoring by
the user. Especially during medication nebulization
and humidification, the resistance of the expiratory
bacterial filter may increase gradually.
CAUTION
Increased resistance
Medication nebulization and active humidification
can increase the resistance of bacterial filters.
Regularly check bacterial filters for increased
resistance.
If HME filters and additional bacterial filters are
used, the resistance may be too high.
Instructions for use Savina 300 SW 5.n
Consequences of high resistance
High resistance values lead to increased work of
breathing and trigger effort in assisted ventilation.
Under unfavorable conditions, this can lead to an
undesirable intrinsic PEEP, which can be
recognized by the fact that the expiratory flow does
not return to "baseline" at the end of expiration.
If the PEEP is unacceptably high, this is indicated
by an alarm. The measured PEEP is then approx.
8 mbar (8 cmH
bacterial filter and replace it if it is the cause of the
PEEP alarm.
cuvettes
2
Monitoring resistance
Savina 300 cannot directly monitor resistance in
the patient port. For this reason:
1 Check the patient's condition.
2 Monitor the device's measured values for
volume and resistance.
3 Observe the instructions for use for the HMEs,
bacterial filters, and breathing circuits in use.
NOTE
Operation of the device is ensured within the
specified accuracy if the use of additional
components does not cause the maximum values
for resistance and compliance to be exceeded.
For detailed information, refer to section
"Performance characteristics" on page 201.
Using coaxial hoses and extendable hoses
Coaxial hoses and extendable hoses have a higher
resistance than normal double-lumen breathing
hoses. If the patient therapy requires very short
expiratory times, an undesirably high intrinsic
PEEP may occur as a result of the increased
resistance of these breathing hoses. If the PEEP
values are unacceptably high, this is indicated by
an alarm.
Assembly and preparation
O) above the set PEEP. Check the
2
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