36
Volume Limit
The Volume Limit (Vol Limit) setting sets the volume limit for a pressure limited breath.
When the volume delivered to the patient meets or exceeds the pre-set volume limit,
the inspiratory phase of the breath terminates.
The volume limit is active for Pressure, PRVC/Vsync, TCPL and PSV breaths only. In
neonatal applications, the volume limit requires a wye flow sensor. Whenever a proximal
flow sensor is used (neonatal, pediatric or adult applications), the volume limit activates
by the inspiratory tidal volume measured by the wye flow sensor. In adult and pediatric
applications that do not use a wye flow sensor, the volume limit is determined by the
calculated inspiratory wye flow. When the volume limit threshold has been reached, the
ventilator alarm status indicator changes to yellow and displays Volume Limit. The alarm
status indicator cannot be reset until the ventilator has delivered a breath, which does
not meet the volume limit threshold. To reset the alarm status window, use the
ALARM RESET button.
Note: Excessive inspiratory flow rates or highly compliant ventilator circuits may
allow tidal volume delivery that exceeds the Volume Limit setting. This is due to
the ventilator circuit recoiling and providing additional tidal volume to the patient.
Delivered tidal volumes should be closely monitored to ensure volume limit accuracy.
To Next Page
Loading...
