DESCRIPTION OF CONTROLS, INDICATORS, ALARMS & CONNECTIONS
3-18 SERHT50NA A0808
WARNING Any time a Device Alert violation occurs along
with the message “OCCLUSION,” an alternate method of
ventilation should be provided for the patient as soon as
possible so that the cause of the violation can be adequately
and safely investigated.
Low Baseline Pressure Alarm
(automatic)
Audible Alarm: Intermittent beep
Visual Alarm: ▼Paw/Apnea indicator blinks red
Message Window: LOW Pbase
The Lo
w Baseline Pressure (Low Pbase) Alarm is activated by an
unstable baseline (leak in the breathing circuit) or by a baseline
decrease since the last PEEP/CPAP control change. A Low Pbase
violation occurs in all modes when airway pressure remains >
3
cmH
2
O/mbar below baseline for 3 seconds. The same LED that
blinks during Low ▼Paw violations blinks when this alarm is
activated. The alarm resets when airway pressure is < 3
cmH
2
O/mbar below baseline.
Check Prox Line Alarm
(automatic)
Audible Alarm: Intermittent beep
Visual Alarm: ▼Paw/Apnea indicator blinks red
Message Window: CHECK PROX LINE
The Chec
k Prox Line Alarm is activated when, during inspiration,
the pressure measurement of the proximal pressure sensing line
is significantly different from the internal back up pressure sensing
line located inside the ventilator. This may be caused by a
disconnected, kinked, water-filled proximal sensing line, or a
blocked proximal line filter. Ventilation is continued during the
alarm condition, using the pressure measurement of the internal
sensing line.
Apnea Alarm
(automatic)
Audible Alarm: Intermittent beep
Visual Alarm: ▼Paw/Apnea indicator blinks red
Message Window: APNEA
The Apnea Alar
m is activated when no mandatory breaths or
detected spontaneous efforts occur for 30 seconds. The alarm is
reset by a time or patient trigger.
NOTE: The Apnea Alarm does not activate Back-up Ventilation.
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