624074/07 10-23
Loss of
PEEP
Medium priority.
Pressure < (PEEP/CPAP –
3 cmH2O) for more than 10 s.
Observe the patient.
Inspect the breathing circuit
for leaks. Replace the
breathing circuit, if neces-
sary.
Low fre-
quency
Medium priority.
Measured fTotal < the set limit.
Check the patient.
Adjust the fTotal alarm
limit.
If the ventilator is in ASV,
check the %MinVol, Patient
height and actual body
weight settings. Consider
suctioning, check for a
kinked ET tube, or consider
the possibility of acute
asthma.
Low inter-
nal pressure
High priority.
The internal reservoir pressure <
150 cmH
2
O for more than 3 s
and one gas supply registers no
pressure. The usual cause is loss
of supply pressure. The ventilator
enters the ambient state. This
alarm cannot be silenced.
Inspect the gas supply for
adequate pressure. Con-
sider using an alternative
source of compressed air
(for example, VENTILAIR
II
medical air compressor) or
oxygen.
Have the ventilator ser-
viced.
Table 10-2. Alarms and other messages
Alarm Definition Complete these actions
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