Calculated Time High: Time Low Ratio - CareFusion AVEA Operating Instructions Manual

AVEA ventilator systems

Calculated Time High: Time Low Ratio

The AVEA displays the calculated ratio corresponding to the ratio ot Time High divided by Time Low in APRV / BiPhasic
ventilation. The display is located between the displays of Time High and Time Low (where the minimums and maximums are
displayed) and below the display of the Pressure High setting. This ratio is presented similarly to an I:E Ratio, but it is actually a
Time High :Time Low Ratio. The ratio is displayed in the same format as an I:E Ratio with the same rules for
transitioning from ratios less than one to ratios greater than one (1:1.1 to 1.1:1). This display is also
updated dynamically while the data dial is being rotated when changing any of the patient settings that
affect this display. This display also reverts to the previously established ratio if the setting change is
cancelled or times out.
Min Max
Figure 4–21: Calculated T High / T Low
Note:
Time High and Time Low are maximum time settings for a time-cycled transition. Actual times may vary depending on
the patient's spontaneous breathing pattern and the Sync window setting.
L2786 Rev. M
Chapter 4: Monitors, Displays and Maneuvers
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