Advanced Settings Characteristics And Ranges; Volume Limit (Vol Limit) - CareFusion AVEA Operating Instructions Manual

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Advanced Settings Characteristics and Ranges

Volume Limit (Vol Limit)

The Vol Limit setting sets the volume limit for a Pressure Limited breath. When the volume delivered to the patient
meets or exceeds the preset Vol Limit, the inspiratory phase of the breath is terminated.
Range:
Normal:
Defaults:
The Vol Limit setting sets the volume limit for a Pressure limited breath. When the volume delivered to the patient meets
or exceeds the preset Vol Limit, the inspiratory phase of the breath is terminated.
Volume Limit is active for Pressure, PRVC / Vsync, TCPL, and PSV breaths only. In neonatal applications Volume Limit
requires the use of a wye flow sensor. Whenever a proximal flow sensor is used (Neonatal, Pediatric or Adult
applications) the Volume Limit is activated by the inspiratory tidal volume measured by the wye flow sensor. In adult and
pediatric applications where no wye flow sensor is used Volume Limit is determined by the calculated inspiratory wye
flow. When the volume limit threshold has been reached the ventilator alarm status indicator will change to yellow and
display the words 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.
CAUTION
If a proximal flow sensor is used it must be attached at both the patient wye and at the ventilator connection to
ensure proper function of the AVEA.
Note:
Excessive inspiratory flow rates or highly compliant ventilator circuits may allow delivery of a tidal volume 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.
Chapter 3: Ventilator Operation
0.10 to 2.50 L (Adult)
25 to 750 ml (Pediatric)
2.0 to 300.0 ml (Neonate)
2.50 L (Adult)
500 ml (Pediatric)
300 ml (Neonate)
Operator's manual
L2786 Rev. M