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10 Responding to alarms
Pressure
limit
changed
Operator Message. User has
changed the Pasv control, which
modifies the high Pressure alarm
limit.
No action required.
Pressure
low limit
reached
Low priority.
The operator-set Vtarget limit is
too low, the ventilator cannot
further reduce the inspiratory
pressure (minimum Pcontrol
above PEEP
1
). The delivered tidal
volume is higher than the set
Vtarget.
Observe the patient.
Confirm the control set-
tings.
Pressure
not
released
High priority.
Airway pressure has exceeded
the high Pressure limit, and the
pressure was not released after
5 s. The ventilator enters the
ambient state.
Provide alternative ventila-
tion. Have the ventilator
serviced.
Print screen
failed
Operator Message. The
requested print screen operation
could not be performed.
Check the insertion of
a proper CompactFlash®
and USB storage device.
Recruit-
ment in
Progress
Low priority.
Recruitment maneuver in prog-
ress.
Wait. Observe patient.
Required
number of
breaths not
reached
Operator Message. Requested
P/V Tool maneuver could not be
performed, because fewer than
five breaths have been delivered
since the last maneuver.
Wait, and retry maneuver.
SBT
aborted
Medium priority.
The SBT was aborted because
one or more parameters were
out of range for longer than Tol-
erance Time or the test was man-
ually stopped.
The device returns to moni-
toring mode. When condi-
tions are met, another SBT
will be conducted.
Touch t h e
I-icon
or the
alarm message to dismiss
the alarm.
Table 10-2. Alarms and other messages
Alarm Definition Complete these actions