Instructions for Use | Alarms and System Messages
Alarms and System Messages 57
Low-priority Patient Alarms with Variable Settings
LOW PULSE RATE
In the standby and therapy states, the measured pulse rate is less than or equal to the low-pulse-rate
alarm setting.
Check probe placement and reposition
Pulse oximeter reporting correctly for the previous three seconds
performance
during active
The alarm is automatically resolved when the measured heart rate exceeds the low pulse rate alarm
setting.
Device will continue to operate.
18 to 300 beats per minute in increments of 1 beat per minute.
HIGH PULSE RATE
In the standby and therapy states, the measured pulse rate is greater than or equal to the high-pulse-
rate alarm setting.
• Check oxygen flow to the ventilator
Pulse oximeter reporting correctly for the previous three seconds.
performance
during active
The alarm is automatically resolved when the measured heart rate falls below the high pulse rate
alarm setting.
Device will continue to operate.
18 to 300 beats per minute in increments of 1 beat per minute.
Power Alarms
LOW BATTERY
Warning:
If the high-priority “Low Battery” alarm occurs, immediately connect the ventilator to an alternate power source. If no alternate
power source is available, immediately place the patient on an alternate source of ventilation.
Medium priority when the last available battery is the detachable or internal battery and can provide
at least 20 minutes of therapy and no more than 45 minutes of therapy
Medium priority when the last available battery is the external DC source and can provide at least 20
minutes of therapy.
High priority when the last available battery can provide at least 10 minutes of therapy.
The last battery available is low or nearly depleted. This includes the internal battery.
The proximal pressure line may be improperly connected or it may contain water droplets that affect
the pressure reading.
• Verify the proximal pressure line is connected properly at both ends and the line is clean and
untangled.
•
If necessary, clear the line and reconnect.
Proximal pressure line attached
performance
during active
Device will continue to operate.
Monitored parameters and alarms that use the pressure measurement will not function
Monitored parameters and alarms that use the flow measurement, such as tidal volume, will continue
summary
During periods of the breath when there is low flow in the inhalation limb, the pressure measured at
the outlet of the device is compared to the pressure measured by the proximal line. When the
difference is greater than 5 cm H
2
0 at low flow for three consecutive breaths, the alarm occurs.
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