Dräger Babylog 8000 plus Instructions For Use Manual page 144

Technical data
Alarm-triggering parameter
Blocked tube
Kinked breathing hose
Tidal volume too low
Minute volume too low
Apnea
Panting breathing
144
Alarm criteria
A blocked or kinked endotracheal tube prevents breathing gas
from passing. This situation is detected by flow measurement.
During operation in a mandatory ventilation mode, if no flow is
measured throughout a complete ventilation cycle, an alarm is trig-
gered.
This situation is detected by measuring the airway pressure at the
inspiratory and expiratory breathing hose connections on the
device. If a breathing hose is blocked of kinked, the airway pres-
sure at the inspiratory connection increases. The differential pres-
sure between the two connections is thus significantly greater than
in normal operation. If a differential pressure of
(8 + 0.6 x
Insp. Flow
is triggered. Simultaneously, the breathing circuit is vented.
is indicated in L/min for this calculation.
Insp. Flow
If the volume regulation VG is unable to deliver the set tidal vol-
ume and VT is less than 90 % of Vtset or Vtset –0.5 mL (which-
ever VT value is lower), an alarm is triggered. The cause may be:
– Pinsp is set too low. The ventilation pressure is insufficient for
the desired VT.
– No plateau during inspiration because the inspiratory flow is
too low or the inspiration time TI is set too short.
The alarm is delayed by the set Alarm delay.
If the measured minute volume MV is outside the selectable alarm
limits, an alarm is triggered. If the lower alarm limit is exceeded,
the alarm is triggered only after a delay time Alarm delay, which
can be set to between 0 and 30 seconds. In this way, brief inter-
ruptions in breathing can be tolerated without triggering an alarm.
The alarm limits can be set to between 0 and 15 L/min. The upper
alarm limit must always be greater than the lower alarm limit.
If the device does not detect breathing for longer than the set
apnea alarm time, an alarm is triggered. Breathing in this case
refers to a minimum tidal volume:
– For mandatory ventilation, at least 0.6 mL
– For spontaneous breathing, at least 0.4 mL
– For high-frequency ventilation, at least 0.2 mL
The apnea alarm time can be set to between 5 and 20 seconds.
If the measured respiratory rate f is greater than the adjustable
panting breathing limit Panting, an alarm is triggered.
Instructions for use Babylog 8000 plus SW 5.n
) mbar (or cmH O) is exceeded, an alarm
2