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 O
2
concentration
FiO
2
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
2
O), 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
2
O) so that coughing, for instance, will not trigger
an alarm. Above the alarm threshold of
Pinsp
+ 5 mbar
(5 cmH
2
O), the pressure-time integral of the excess pressure is
calculated. If the pressure-time integral exceeds 0.33 mbar x s
(0.33 cmH
2
O x s), an alarm is triggered. Simultaneously, manda-
tory inspiration is interrupted.
Example: Airway pressure rises to 6 mbar (6 cmH
2
O) 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
2
O 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
2
O) 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
2
O), 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
2
O)
and the pressure-time integral exceeds 6 mbar x s (6 cmH
2
O x s),
an alarm is triggered.