Dräger Babylog 8000SC, Technical & Service Manual, Page: 23 / 155

Dräger Medical AG & Co. KGaA 6173.3
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Function description Babylog 8000
During each mandatory breath, the level of the disconnection pressure (Pdis) must be exceeded without
interruption for at least the disconnection time (Tdis), otherwise an alarm will be generated. Pdis is a
function of the settings Pinsp and PEEP. If Pinsp is set considerably higher than the actually attained
pressure, the Pdis alarm level likewise increases.
Depending on the flow and the inspiration time settings, the level might not be attained any more.
Babylog 8000 generates an alarm even if there is no leakage in the breathing system.
4.5 Overpressure and Low Pressure Alarms
During the inspiratory and expiratory phases, the airway pressure (P
aw
) must not exceed the set pressure
limit by more than 10 mbar. If the set pressure limit is exceeded by 10 mbar to 20 mbar, Babylog
generates an alarm and, at the same time, reduces the inspiratory breath time. The remaining time is
added to the CPAP phase. If the set pressure limit is exceeded by more than 20 mbar, an alarm is
activated and the breathing system is vented.
In the CPAP phase, the airway pressure must be
r
4 mbar of the set PEEP/CPAP. Otherwise an alarm will
be generated. If the limit is exceeded by more than 10 mbar, venting is carried out as during the
inspiratory phase even if the pressure falls below the absolute level of —2 mbar.
These overpressure and low pressure alarms apply to all ventilation modes.
4.5.1 Babylog 8000 up to Software Version 3.0
Fig. 5: Alarms
4.5.2 Dynamic Stenosis Limit
The dynamic stenosis limit applies to Babylog 8000 units with software version 4.0 and Babylog 8000 SC
10 mbar
10 mbar
6 mbar
4 mbar
4 mbar
-2 mbar
Zeit
PEEP
Pinsp
Paw
Stenose 2 (Notentlüftung)
Stenose 1 (Inspiration Exspiration)
Entlüftung
time