CareFusion AVEA - O2 Alarms

178 Chapter 7: Alarms and Indicators Operator's manual
L2786 Rev. M
O
2
Alarms
Low O
2
% (Low FIO
2
)
This is a high priority audible/visual alarm. LOW FIO
2
is displayed and a high priority tone sounds if the monitored
Delivered O
2
% falls below the set FIO
2
minus 6% or 18% FIO
2,
whichever is greater.
High O
2
% (High FIO
2
)
This is a high priority audible/visual alarm. HIGH FIO
2
is displayed and a high priority tone sounds if the monitored
Delivered O
2
% rises above the set FIO
2
+ 6%.
Table 7–1: Alarm Conditions
Message
Alarm Condition
Range
Priority
SAFETY VALVE
OPEN
Safety valve is open N/A High
VENT INOP Ventilator failure due to a recoverable or non-recoverable
condition. The safety valve opens, indicated by a SAFETY VALVE
message, and the patient is allowed to breathe room air. PEEP is
not maintained
N/A High
LOSS, AIR Wall air drops below 18.0 psig (1.2 bar) and no functional
compressor is installed or the compressor output is insufficient to
meet instrument demand. Patient will continue to be ventilated by
O
2
supply only.
N/A High
LOSS, O
2
Oxygen supply to the ventilator drops below 18.0 psig (1.2 bar)
and the %O
2
is set to > 21%. Patient will continue to be ventilated
by the air supply only
N/A High
LOSS, HELIOX The alarm is triggered if heliox is being used and the heliox gas
supply to the ventilator drops below 18.0 psig (1.2 bar). The
patient continues to be ventilated by the oxygen supply only.
N/A High
LOSS, GAS
SUPPLY
All sources of gas fail; wall air, internal compressor (if installed)
and oxygen. The safety valve opens, indicated by a SAFETY
VALVE OPEN message, and the patient is allowed to breathe
room air. PEEP is not maintained.
N/A High
NOT
VENTILATING
The internal blended gas pressure is below 1 psi for greater than
about 12 seconds, indicating there is no ventilation occurring.
The safety valve should be open in this condition, as there is no
pressure to keep the safety valve closed. This alarm is only a
monitor of this pressure level and does not change the “state” of
the ventilator. The condition is recoverable if pressure is restored.
Pressure < 1psi for > 12 seconds High
LOW P
PEAK
The peak inspiratory pressure for a breath is less than the set
LOW P
PEAK.
Not active for spontaneous breaths.
3 to 99 cmH
2
O
Default 3 cmH
2
O
High
HIGH P
PEAK
Peak inspiratory pressure is greater than the set HIGH P
PEAK.
Inspiration is terminated and the circuit pressure is allowed to
return to baseline pressure + 5 ± 1.5 cmH
2
O before the next
breath is delivered.
Normal Breath Range:
Adult:
10 to 105 cmH
2
O
Default: 40 cmH
2
O
Pediatric:
10 to 85 cmH
2
O
Default: 40 cmH
2
O
Neonate:
Default: 30 cmH
2
O
Sigh Breath Range:
1.5 x set normal HIGH P
PEAK
Only active for sigh breaths
High
EXT HIGH P
PEAK
Activates whenever the HIGH P
PEAK
alarm has been active for
more than 5 seconds (i.e. If the circuit pressure fails to return to
PEEP + 5 cmH
2
O within 5 seconds). The safety and exhalation
N/A High