Alarms
9650-002360-01 Rev. A
ZOLL Z Vent Ventilator Operator’s Guide
5-3
Muting Alarms
During device operation, the mute behavior depends on the alarm priority (see section below).
There are other mute behaviors used by the alarm system. See “Managing Alarms” for
Preemptive Mute and Startup Mute descriptions.
Warning!
Use in High Noise Environments — in high noise environments, you may be inclined not
to mute the alarm while addressing the problem. Not pressing Mute limits the user's
ability to resolve the alarm because with each breath the alarm is re-triggered and any
parameter changes you are attempting are canceled as the alarm re-triggers.
Alarm Priorities
Alarm priorities define the operational status of the device and its ability to provide mechanical
ventilation. The alarm priorities are as follows:
High Priority
Mechanical ventilation under user control is no longer possible. This alarm priority requires
immediate intervention indicated by fast red blinking alarm LED and audio signal. This
includes system failure alarms where the CPU has failed and a backup has taken over to sound
the audible and visual alarms. It can also occur when the device is turned on and there is no
internal or external power source.
Pressing the
Mute/Cancel
button has no effect on a high priority alarm. The alarm can only be
silenced by turning off the ventilator. Some alarms can be resolved by turning the ventilator off,
then on again.
Medium Priority
Mechanical ventilation is active or is possible (maybe for a finite period of time) but, there is a
failure or fault with the patient, ventilator circuit, a pneumatic subsystem, or pulse oximeter.
This alarm priority requires immediate intervention by the user indicated by a slow red blinking
alarm LED and audio signal.
Pressing the
Mute/Cancel
button mutes medium priority alarms for 30 seconds. If the alarm
trigger still exists after 30 seconds, the audible alarm recurs until you mute it again for another
30 second period or the alarm is resolved.
Low Priority (Advisory)
Safe mechanical ventilation is active but, there is a fault that you must be aware of to ensure
safe management of the patient or ventilator. Low priority alarms present with both an audible
and yellow alarm LED signal (slow blink) alerting you to the condition.
Pressing the
Mute/Cancel
button cancels the audible signal. If the alarm is not resolved, the
yellow LED remains illuminated to remind you of the fault or failure.
Note:
Some Low Priority alarms are canceled and the Alarm LED turns green when you
push the
Mute/Cancel
button. For others, the audible alarm is canceled but the Alarm
LED stays yellow to remind you that the device is operating in a state that needs
monitoring.
