Dräger Babylog 8000 plus - Alarm Criteria and Safety Principles

Instructions for use Babylog 8000 plus SW 5.n 143
Technical data
Alarm criteria
Alarm-triggering parameter Alarm criteria
Inspiratory O
2 concentration If the measured inspiratory O2 concentration FiO2 is more than
4 Vol.% above or below the set value for longer than 25 seconds,
an alarm is triggered.
Disconnection If the breathing circuit is disconnected or if there is a large leak-
age, insufficient or no ventilation pressure is built up. Detection is
dependent on whether a minimum pressure is reached. This mini-
mum pressure depends on the operating mode and the set values
PEEP and Pinsp. When the device is in IPPV/IMV, SIPPV, or
SIMV ventilation mode, if the airway pressure is not greater than
the minimum pressure
PEEP +(Pinsp – PEEP) / 4 for at least 0.025 seconds in every
breathing cycle, an alarm is generated.
When the PEEP is set to <2.5 mbar (2.5 cmH
2O), disconnection or
extubation may not be detected by the integrated pressure moni-
toring system, and an alarm cannot be triggered. Additional venti-
lation and patient monitoring are therefore necessary.
Inspiratory pressure high Airway pressure must not exceed the set pressure limitation during
mandatory inspiration. The limitation may be exceeded by max.
5 mbar (5 cmH
2O) so that coughing, for instance, will not trigger
an alarm. Above the alarm threshold of Pinsp +5mbar
(5 cmH
2O), the pressure-time integral of the excess pressure is
calculated. If the pressure-time integral exceeds 0.33 mbar x s
(0.33 cmH
2O x s), an alarm is triggered. Simultaneously, manda-
tory inspiration is interrupted.
Example: Airway pressure rises to 6 mbar (6 cmH
2O) above the
pressure limitation Pinsp and then remains constant. An alarm will
be triggered after 0.33 seconds. If the pressure-time integral con-
tinues to rise after the alarm and exceeds 0.58 mbar x s
(0.58 cmH
2O x s), ventilation will be interrupted and the breathing
circuit will be vented.
CPAP pressure high When operating in CPAP ventilation mode, if airway pressure is
continuously above the threshold of PEEP/CPAP + 4 mbar
(4 cmH
2O) for longer than 5 seconds in the expiration phases of
the mandatory ventilation modes, an alarm is triggered. Simultane-
ously, the breathing circuit is vented. If airway pressure is greater
than PEEP/CPAP + 25 mbar (25 cmH
2O), the alarm and venting
will be triggered after only 0.3 seconds.
CPAP pressure low If airway pressure falls below PEEP/CPAP – 2 mbar (2 cmH
2O)
and the pressure-time integral exceeds 6 mbar x s (6 cmH2Oxs),
an alarm is triggered.