OPRHT70 A0310
6-3
Ventilator Alarms
6
while using volume controlled ventilation. To verify exhaled volumes,
use a separate exhaled volume monitor.
Low Pressure alarm $P
The Low Pressure alarm determines the minimum pressure that
must be attained in the breathing circuit during mandatory breaths.
It should be set as close to the patient’s normal peak pressure as
possible.
In SPONT mode the Low Pressure alarm is inactive but the value
can be preset. The Low Pressure alarm limit does not apply to
spontaneous breaths in SIMV mode.
NOTE: The Low Pressure alarm setting is limited to no less than
three (3) above the PEEP/CPAP setting. If NIV is enabled, it is limited
to no less than one (1) above the PEEP/CPAP setting.
High Pressure alarm #P
The High Pressure alarm setting determines the maximum pressure
allowed in the breathing circuit. In general, it should be set 10 to 15
cmH
2O above the patient’s normal peak pressure.
Low Inspiratory Minute Volume alarm $Min Vol
The Low Inspiratory Minute Volume alarm alerts the caregiver when
delivered minute volume decreases to the set alarm level. Delivered minute
volume may decrease due to slowed or absent patient breathing effort
in any mode/breath type. It may also decrease due to worsening lung
conditions or secretion build up in pressure control or pressure support*.
This alarm may be linked with Backup Ventilation.
When the NIV feature is turned On, the Low Inspiratory Minute
Volume can be set to OFF.
High Inspiratory Minute Volume alarm #Min Vol
This alarm helps to alert the caregiver to increases in breath rate,
auto-triggering and during pressure control or pressure support*, to
large leaks or tubing disconnects.
High Respiratory Rate Alarm #RR
This alarm alerts the caregiver if the total respiratory rate rises above
the alarm setting.
*Not available on all models
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