AVEA ventilator systems Chapter 7: Alarms and Indicators 177
L2786 Rev. M
Note:
The Low Exhaled Tidal Volume alarm will assert on a single occurrence of a low exhaled volume. In patients who have
variable tidal volumes, the Low Exhaled Tidal Volume alarm may be turned off (default) and the Low Exhaled Minute
Volume alarm can be used to avoid nuisance alarms.
High Tidal Volume (High V
t
)
This is a low priority audible/visual alarm.. HIGH Vt is displayed and a low priority tone sounds if the absolute monitored
exhaled tidal volume is greater than the High Tidal Volume threshold setting.
Range: 0.10 to 3.00 L (Adult)
25 to 1000 ml (Pediatric)
2.0 to 300.0 ml (Neonate)
Defaults: 3.00 L (Adult)
1000 ml (Pediatric)
300.0 ml (Neonate)
Rate/Time Alarms
Apnea Interval
This is a high priority audible/visual alarm. APNEA INTERVAL is displayed and a high priority tone sounds if the
ventilator does not detect a breath initiation (by any means) within the preset period of time. Apnea ventilation will begin
when this alarm is activated.
Range: 6 to 60 seconds
Default: 20 seconds
High Rate
This is a medium priority audible/visual alarm. HIGH RATE is displayed and a medium priority tone sounds if the
monitored total breath rate exceeds the alarm setting.
Range: 1 to 200 bpm
Default: 75 bpm
Maximum Inspiratory Time Limit (Max I-Time)
This is a low priority audible/visual alarm. I-TIME LIMIT is displayed and a low priority tone sounds if the inspiratory time
for any breath exceeds the maximum set inspiratory time plus pause time. Maximum inspiratory time is 5.0 seconds for
adult/pediatric, and 3.0 seconds for neonate. The inspiratory phase of the breath is terminated when this alarm
activates.
I:E Ratio Limit (I:E Limit)
This is a low priority audible/visual alarm. I:E LIMIT is displayed and a low priority tone sounds, if the I:E Ratio for a
mandatory breath exceeds 4:1. The inspiratory phase of the breath is terminated when this alarm activates.
This alarm is not active in APRV / BIPHASIC mode.
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