50
6-4
Alarms
Ventilator reaction to alarm
Alarm Definition
High Priority
Alarm
The inhalation terminates and
expiration begins.
The maximum pressure has been
exceeded from its limit during
inhalation.
The airway has been occluded
partially.
High Inh. Pressure
If current mode is one of VSV, PSV
or APRV modes and apnea backup is
active, apnea backup ventilation starts
and apnea alarm is enabled.
If apnea bachup is not active, only
apnea alarm will be enabled.
No breath has been delivered in
PSV,VSV or APRV mode during the
specified time
Apnea
In the exhalation:
1-Occlusion alarm is activated.
2-Inhalation valve closes and
exhalation valve opens.
3-Trigger is inactivated.
4-Safety valve opens.
The breathing circuit from the
ventilator to patient (or vice versa) or
expiration valve has been occluded.
This alarm is activated during
expiratory.
Occlusion
Ventilation continues.
The breathing circuit is disconnected
from the patient.
Disconnection
Ventilation continues.
PEEP pressure has violated low PEEP
alarm setting in two consecutive
respiratory cycles.
Low PEEP
Ventilation continues.
Exhaled minute volume has exceeded
high MValarm limit in three
respiratory cycles.
High MV
Ventilation continues.
Exhaled minute volume has been
below the limit set in the three
respiratory cycles.
Low MV
Ventilation continues.
The oxygen concentration is too high
compared with high alarm setting
(more than 6%) for about 30 seconds.
Since the maximum amount of
oxygen percentage measurement is
100, so in cases where the user's
adjustment value is 94 to 100, with
the oxygen percentage exceeding that
value, the High Oxygen alarm device
will not work.
High Oxygen
Ventilation continues.
The oxygen concentration is too low
compared with low alarm setting
(more than 6%) for about 30 seconds.
Or the oxygen concentration is less
than 18%.
Low Oxygen
