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Machine Volume
Machine Volume is not available when Volume Guarantee is active.
Volume Target
Default:
Resolution: 0.1 mL
Accuracy: ±(0.1 mL +10% setting)
Range: 2 to 300 mL (Pressure+VG modes)
2 to 100 mL (TCPL+VG)
Note:
Leaks greater than 30% may reduce the ability to achieve the desired Volume Target.
Note:
Due to the nature of the TCPL mode, delivered volume may be reduced if inspiratory time and/or flow are inadequate
to achieve the Volume Target. Volume guarantee will attempt to compensate by increasing delivered pressure up to
3 cmH
O below the high inspiratory-pressure limit. The Expiratory Volume alarm will be activated if the expiratory
2
volume falls below the alarm threshold.
Inspiratory Pressure
In VG, inspiratory pressure is no longer a primary control. The operator set Inspiratory Pressure is an advanced control
of Volume, and is used for test breaths and acts as a backup pressure setting during certain alarm conditions.
Range:
0 – 80 cmH
Default: The pressure setting of the Pressure or TCPL mode used before enabling VG.
WARNING!
The Inspiratory Pressure setting in the Advanced Controls screen should be set at an appropriate level for
the patient to avoid under or over delivery of tidal volume during test breaths and certain alarm conditions.
Delivered Pressure
In volume guarantee ventilation the delivered pressure is not an operator setting, it is the pressure provided by the
ventilator to maintain the set volume.
Default: Inspiratory Pressure plus PEEP
Minimum: PEEP + 2 cmH
Maximum: High Peak Pressure –3 cmH
Note:
Breath to breath variation of delivered pressure will not be more than 3 cmH
same trigger type (time vs. patient triggered).
Chapter 3: Ventilator Operation
Monitored Expired Tidal Volume (if adding Volume Guarantee to the existing ventilation mode, and a
breath at the current set pressure has been delivered) or 2 mL (if no previous breath at the same
mode and pressure)
O
2
O
2
O
2
Operator's manual
O between successive breaths of the
2
L2786 Rev. M
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Troubleshooting
