ZOLL AEV Operator's Manual page 100

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LARMS
3092 Inspiratory Demand
Alarm triggers when the end-inspiratory pressure is < -1.0 cm H
due to changes in the patient's status, where the patient attempts to inhale more gas than what is currently set.
When this occurs, the user should note if the patient is breathing or fighting with the vent. The user should
increase the flow rate (by decreasing the inspiratory time) and/or reduce the rise time. The physician should be
consulted.
Mitigation/Info: Patient May be Breathing with the Ventilator, Increase I Time and/or Decrease Rise Time,
Check Patient and Circuit for Leaks, Disable Alarm, **Consult Physician**
3110 RTC Battery Low
Alarm triggers when the real-time clock (RTC) battery is < ~2.5 volts. The alarm condition is checked at start
up and if this alarm occurs the device is safe to operate but the user should replace the device when appropri-
ate and consult the service center for additional information. The user cannot change the RTC battery. The
RTC battery provides power for the clock that tracks the local time. It is replaced every 4 years during preven-
tive maintenance.
Mitigation/Info: Vent Fully Functional, **Contact Service Center**
3120 PM Due
Alarm triggers at start up when the preselected number of days has elapsed since the last calibration. When
appropriate the device should be replaced and sent for preventive maintenance. The low priority message
serves as a reminder. Calibration is due every 365 days or 730 days for devices configured for stockpile use
(check with your organization regarding the configuration of your device). Users should schedule the device for
service as soon as possible. Users can suspend the yellow alarm notification for the current use by turning the
alarm off using the Alarm Configuration submenu in the Main Menu.
Mitigation/Info: Preventive Maintenance Due, Ventilator Functioning with No Faults, **When Appropriate, Con-
3121 Power Cycle Need
This alarm occurs when the device has been running continuously for 30 days. In order to check the flow pneu-
motach, which is done a startup, the user should manually ventilate the patient and cycle the power. Once this
is done the user can select the Last Settings options from the Start Menu and continue operation if not faults
are detected during the self check. If nonoperating alarms occur, contact the service center for additional infor-
mation.
Mitigation/Info: Power-on Self Checks are Due, When Appropriate, Power Off Then On, Verify Proper Settings,
**Review Manual For Additional Information**
3130 Self Check Fault
Alarm triggers when the ambient pressure transducer fails. When this occurs, the device is no longer able to
automatically compensate for changes in altitude especially in situations where the ambient pressure could
change rapidly as during transport by air. When this alarm is active during aeromedical transport the user
should ventilate using pressure targeting if the ventilator cannot be replaced. Users should also monitor chest
rise and breath sounds to ensure adequate ventilation.
Mitigation/Info: Sensor: Barometer, Altitude Compensation Disabled, Maintain Airway Pressure, Check Patient
Chest Rise, Avoid Use At Varying Altitude, **Contact Service Center**
3131 Excessive Altitude
Alarm triggers when the ambient pressure transducer detects an altitude >25,000 feet (7620 meters). Beyond
this altitude compensation remains fixed at the 25,000 ft compensation level. The user should monitor the air-
way pressure and reduce the tidal volume as altitude increases though, there is very little change in perfor-
mance over this altitude. Where possible cabin pressure should be maintained in the compensated range.
Mitigation/Info: Beyond Altitude Compensation Limit, Maintain Airway Pressure, Check Patient Chest Rise,
Monitor Ventilator/Patient,**Reduce Altitude/ Pressurize Cabin if Possible**
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O for 3 consecutive breaths. This can occur
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