CareFusion AVEA - Calculated I:E Ratio; Calculated Minute Volume (Calc Ve); Calculated Time High & Time Low Min; Max; Main Screen Displays

130 Chapter 4: Monitors, Displays and Maneuvers Operator's manual
L2786 Rev. M
Main Screen Displays
Calculated I:E Ratio
The AVEA displays the calculated I:E Ratio (Calc I:E) based on the set breath rate, set tidal volume, and set peak flow
for Volume breaths, or the set breath rate and set inspiratory time for Pressure, TCPL, and PRVC breaths. The display
is located next to the Calculated Minute Volume display at the bottom left of the Main screen. This display is updated
while the data dial is being rotated when changing any of the primary patient settings that affect these displays in order
to view the Calculated I:E Ratio that results when the setting change is accepted, before accepting that change. This
display reverts to the previously established values if the setting change is cancelled or times out.
Figure 4–20: Calculated I:E Ratio Display
Range: 1:99.9 to 99.9:1
Limitations: For Volume breaths, the calculated I:E Ratio shall only change if the set tidal volume, set breath rate,
or set peak flow is changed. For Pressure, TCPL, PRVC, breaths, the calculated I:E Ratio shall only
change if the set breath rate or set inspiratory time is changed.
Note:
Calculated I:E ratio is not active in APRV / BIPHASIC mode
Calculated Minute Volume (Calc Ve)
The ventilator displays the Calculated Minute Volume at the bottom left of the Main screen as follows:
Calc V
e
= [(Set tidal volume) × (Set breath rate)]
This display is updated while the data dial is being rotated when changing any of the primary patient settings that affect
these displays in order to view the Calculated Ve that results when the setting change is accepted, before accepting that
change. This display reverts to the previously established values if the setting change is cancelled or times out.
Limitation: For Volume breaths only. The Calc V
e
display only changes if the set tidal volume or set breath rate is
changed.
Calculated Time High & Time Low Min / Max
The AVEA displays the calculated minimum and maximum Time High and Time Low in APRV / BiPhasic ventilation. The
display is located immediately under the Time High and Time Low primary controls on the main screen.