CareFusion AVEA Operating Instructions Manual page 134

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Tidal Volume (Vt) – This is the tidal volume delivered to the patient during the maneuver. This setting has no effect on
the settings during normal ventilation and can be set to any tidal volume desired independent of the current mode of
ventilation.
Note:
The Tidal Volume setting during a Pflex maneuver is not circuit compliance compensated.
Flow – This setting is adjustable from 0.5 to 5 l/min and controls the inspiratory flow used to deliver the maneuver tidal
volume.
PEEP – The is the PEEP used for the Slow Flow Maneuver. The operator can select any PEEP level independent of the
control PEEP used during controlled ventilation.
PEEPTeq – This control sets the equilibration at the Maneuver PEEP after which the Slow Flow Maneuver begins.
Sensitivity – This sets the sensitivity threshold that the ventilator uses to detect patient effort during the Slow Flow
Maneuver. The default position is 3 cmH
applications.
Start / Stop – Starts and Stops the maneuver.
Note:
All maneuver control settings are independent of control settings in normal ventilation.
WARNING
Normal ventilation is suspended for the duration of the maneuver. The patient should be evaluated for
contraindications prior to executing the maneuver. The patient should be directly monitored by trained
medical personnel during the maneuver.
To execute a Pflex maneuver set the Tidal Volume, Flow, Maneuver PEEP, PEEP Equilibration time and Sensitivity.
Press the Start soft key on the maneuver screen. The ventilator will suspend normal ventilation and begin delivering the
Maneuver Tidal Volume at the set Flow. The corresponding Pressure / Volume curve will be drawn by the ventilator as
the volume is delivered to the patient. Once complete the ventilator will automatically resume normal ventilation and
Freeze the graphics display. The maneuver can be aborted at anytime by pressing the Stop soft key. If at anytime
during the maneuver the ventilator detects a patient effort, the ventilator will cycle into exhalation and normal ventilation
will resume.
The measured Pflex, Pflex Lwr, Pflex Upr and Vdelta will be displayed, if they can be determined. At this point the
operator can choose to accept the inflection points as determined by the ventilator or the operator can choose to set the
inflection points manually.
To set the inflection points manually simply scroll the cursor to the desired position with the Data Dial and press the Set
Pflex Lwr or Set Pflex Upr softkey. The Vdelta will be automatically recalculated.
The measured data can be saved by pressing the Save Loop softkey. Up to four loops may be saved, when a fifth loop
is saved the oldest loop and data will be erased.
Chapter 4: Monitors, Displays and Maneuvers
O but can be adjusted by the operator to assure accurate sensitivity in all
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Operator's manual
L2786 Rev. M