Leak Compensation (Leak Comp); Circuit Compliance - CareFusion AVEA Operating Instructions Manual

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Even if inspiratory pressure is set at zero, Artificial Airway Compensation will still provide an elevated airway pressure to
compensate for the resistance of the endotracheal tube.
When turned on, the Artificial Airway Compensation (AAC) indicator will appear on the touch screen in all modes of
ventilation, even though Artificial Airway Compensation may not be active in the current mode (i.e. in volume controlled
breaths). This is to alert you to the fact that Artificial Airway Compensation is turned on and will become active if a
Pressure Support mode or a combination mode (i.e.: Volume Control SIMV) is selected.

Leak Compensation (LEAK COMP)

During exhalation, PEEP is maintained by the cooperation of the Flow Control Valve (FCV) and the Exhalation Valve
(ExV). The ExV pressure servo is set to a target pressure of PEEP and the FCV pressure servo is set to a pressure
target of PEEP - 0.4 cmH
when the pressure drops below its target up to a maximum flow rate for the patient size. It is not active during breath
delivery.

Circuit Compliance

When Circuit Compliance is active, the volume of gas delivered during a volume controlled or targeted breath is
increased to include the set volume plus the volume lost due to the compliance effect of the circuit.
Exhaled volume monitors, are adjusted for the compliance compensation volume in all modes of
ventilation.
Range:
Default:
Circuit compliance is measured automatically by the ventilator during an Extended Systems Test (EST). The value
cannot be entered manually.
Note:
Circuit Compliance is active for set Tidal Volume in volume control ventilation, Target Tidal Volume in PRVC and
Machine Volume in Adult and Pediatric applications only. Although circuit compliance is displayed on the set up
screen it is not active for neonatal patients.
Chapter 3: Ventilator Operation
Tube Diameter:
Range: 2.0 to 10.0 mm
Default: 7.5 mm
5.5 mm
3.0 mm
Tube length:
Range: 2.0 to 30.0 cm
2.0 to 26.0 cm
2.0 to 15.0 cm
Default: 30.0 cm
26.0 cm
15.0 cm
Range ON/OFF.
Default: OFF
O. The ExV servo relieves when the pressure is above its target and the FCV supplies flow
2
0.0 to 7.5 ml/cmH O
2
0.0 ml/cmH O
2
(Adult)
(Pediatric)
(Neonate)
(Adult)
(Pediatric)
(Neonate)
(Adult)
(Pediatric)
(Neonate)
Operator's manual
L2786 Rev. M