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5 Troubleshooting
5.2 Alarms
No.
Alarm
1
"Pressure high" High
2
"Pressure low"
3
"Pressure
sustained"
5-4
Priority
Set condition
In all modes:
If P
≥ P
peak
max
Sequence #2 to follow:
If P
> (P
peak
max
High
VCV, SIMV-VC mode:
If P
< (P
peak
PEEP
after 15 sec from start of
insp.
Bi-Level VG mode:
If P
< (P
peak
PEEP
after 15 sec from start of
insp.
Bi-Level mode:
If P
< ((P
peak
insp
0.5 cmH
O after 15 sec from
2
start of insp.
In all modes:
If P
< 0 cmH
airway
than 0.5 sec or if "system
open ?" criteria is set
High
In all modes:
If Pmin > (P
PEEP
within one breath
In all modes:
If P
> (P
airway
set
within 0.5 sec
Action
High priority alarm.
End inspiration (set
inspiratory flow to zero)
and start expiration (set
expiratory valve to PEEP)
Additional to the above:
+ 2 cmH
O)
Open inspiratory safety
2
valve
High priority alarm.
+ 2 cmH
O)
2
+ 2 cmH
O)
2
+ P
) /2 ) –
PEEP
High priority alarm.
O for more
Open sub atmospheric
2
pressure relief valve
High priority alarm.
+ 2 cmH
O)
End inspiration (set
2
inspiratory flow to zero)
and start expiration (set
expiratory valve to PEEP)
Additional to the above:
+ 5 cmH
O)
Open inspiratory safety
2
valve
TRM, Centiva/5 Plus, M1047448/CM-922026, rev. 3.50.a of 11/05
Reset condition
In all modes:
Within the following
breath
If P
< (P
–2
peak
max
cmH
O)
2
and
Inspiratory safety valve
is closed.
VCV, SIMV VC mode:
If P
≥ (P
+ 5
peak
PEEP
cmH
O) within the
2
following breath
Bi-Level VG mode:
If P
≥ (P
+ 2
peak
PEEP
cmH
O) within the
2
following breath
Bi-Level mode:
If P
≥ ((P
+ P
)
peak
insp
PEEP
/2 ) – 0.5 cmH
O
2
within the following
breath.
And for all modes:
If P
≥ 0 cmH
O
airway
2
In all modes:
If Pmin < (P
+ 2
PEEP
cmH
O) within the
2
following breath
and
Inspiratory safety valve
is closed
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