Chapter 6
Troubleshooting
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BiPAP Vision Service Manual © Respironics, Inc.
6-9
Hi Rate
High total respiratory rate: the
number of mandatory and
spontaneous breaths exceeds
the high rate alarm limit.
Cancels if the measured rate
drops below the alarm limit.
• Patient’s respiratory
rate increases.
• High rate alarm limit
set too low for patient.
1. Check patient.
2. Review high rate alarm limit.
Lo P
Low pressure: proximal
pressure below the low
pressure limit for a time that
exceeds the low pressure
delay setting. Cancels if
pressure rises above the low
pressure limit.
• Patient disconnect or
large leak.
• Patient inspiratory
demand exceeds
delivered flow.
• Low pressure delay
setting too low, or low
pressure limit set
above pressure setting.
1. Check patient.
2. Check patient circuit and
inlet filter.
3. Review low pressure delay
setting.
4. Review low pressure alarm
limit.
Lo Rate
Low total respiratory rate: the
number of mandatory and
spontaneous breaths below
the low rate alarm limit.
Cancels if the measured rate
rises above the alarm limit.
• Patient’s respiratory
rate decreases.
• Patient cannot trigger
breaths.
• Low rate alarm limit
set too high for
patient.
1. Check patient.
2. Review low rate alarm limit.
LoMin Vent
Delivered minute volume is
below the low minute volume
alarm limit (alarm can be
disabled). Cancels if minute
volume rises above the alarm
limit.
• Patient disconnect or
large leak.
• Patient’s respiratory
rate or tidal volume
decreases.
• Low minute volume
alarm limit set too
high for patient.
1. Check patient.
2. Check patient circuit and
patient connection.
3. Review low minute volume
alarm limit.
O
2
Flow
Oxygen supply pressure drop.
Ventilation continues. Alarm
does not self-cancel.
• Insufficient or
disconnected oxygen
supply.
• Blocked oxygen
regulator inlet filter.
1. Check oxygen supply and
connections.
2. Check oxygen regulator inlet
filter and replace if
necessary.
Table 6-2: Troubleshooting Alarms
Alarm display
Description
Possible cause
Corrective action