GE Centiva/5 Plus, Technical Reference Manual

Page: 75 / 214

5 Troubleshooting
TRM, Centiva/5 Plus, M1047448/CM-922026, rev. 3.50.a of 11/05
5-5
No. Alarm Priority Set condition Action Reset condition
VCV, SIMV-VC, Bi-Level VG,
Bi-Level mode:
System open (see messages)
for longer than Apnea time
High priority alarm. VCV, SIMV-VC, Bi-
Level VG, Bi-Level
mode:
Next expiration is
detected and
Rate > 3 bpm
4 “Apnea” High
CPAP/PSV mode:
Since the last expiration no
breath is detected in set
apnea time
or measured rate < 4 bpm
High priority alarm.
Bi-Level mode is started.
Apnea time displayed on
screen.
After 5 min flashing
visual alarm and audible
alarms are turned OFF
and message remains in
screen.
CPAP/PSV mode:
Restart CPAP/PSV
mode or start any
other mode
and
next expiration is
detected
and
Rate > 3 bpm.
5 “Leakage” High In all modes:
If ((V
insp
-V
exp
) / V
insp
) * 100 >
set leakage (5% - 95%)
over a rolling average of 4
breaths
High priority alarm. In all modes:
If ((Vi
inspi
-V
exp
) / V
insp
) *
100
≤
set leakage (5%
- 95%) within one
breath
6 “Vt not
delivered”
High VCV, SIMV-VC, Bi-Level VG
mode:
If P
peak
≥
P
limit
And
Vt measured
≤
Vt set * 0.8
after 15 sec from start of
inspiration
High priority alarm VCV, SIMV-VC, Bi-
Level VG mode:
If P
peak
< P
limit
And
Vt measured > Vt set x
0.8 at the end of
inspiratory time
7 “MV low” High In all modes:
If calculated MV over 61
seconds or over 10 breaths
(which ever is smaller) < set
MV limit (0.5 – 50 L/min)
High priority alarm. In all modes:
If calculated MV > set
MV limit (0.5 – 50
L/min)
8 “MV high” High In all modes:
If calculated MV over 61
seconds or over 10 breaths
(which ever is greater) > set
MV limit (0.5 – 50 L/min)
High priority alarm. In all modes:
If calculated MV < set
MV limit (0.5 – 50
L/min)