78
Alarms and error messages
ADJUSTABLE ALARMS
The parameters for the alarms shown in Table 10 will be adjusted by the
physician.
Alarm parameter/
alarm message
Priority Cause
Time delay
Pressure
Difference /
Pressure too high
HIGH
Positive pressure deviation
greater than set “Pressure
Diff.”
15 s or
3 breaths
consecutively
Pressure
Difference /
Pressure too low
HIGH
Negative pressure deviation
greater than set “Pressure
Diff.”
15 s or
3 breaths
consecutively
Max. Frequency /
Frequency too
high
HIGH
Measured frequency greater
than “Max. Frequency“
3 breaths
consecutively
Apnea
HIGH
Set apnea time exceeded (only
with frequency “OFF”)
none
Leakage
HIGH
Leakage greater than set
leakage (volume too great for
3 breaths) or
fl
ow greater 1 l/s
(2 l/s in CPAP mode)
Max. Volume /
Volume too high
HIGH
Tidal volume greater than
“Max. Volume”
3 breaths
consecutively
Min. Volume /
Volume too low
HIGH
Tidal volume smaller than
“Min. Volume”
3 breaths
consecutively
Max. Oxygen /
Oxygen too high
MEDIUM Measured FiO
2
greater than set
“Max. Oxygen”
none
Min. Oxygen /
Oxygen too low
MEDIUM Measured FiO
2
lower than set
“Min. Oxygen”
none
Minimum Volume
not reached
Note
Tidal volume smaller than set
minimum volume - Additional
volume insuf
fi
cient
none
Table 10: Adjustable alarms - alarm
messages
Summary of Contents for TRENDvent
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