Dräger Perseus A500 - Volumeter; Low-Flow Wizard (Optional)

Operation
104 Instructions for use Perseus A500 SW 2.0n
Volumeter
The volumeter can be used to monitor and assess
the ventilation during spontaneous breathing,
manual ventilation, or mechanical ventilation.
The bar graph indicates the inspiratory and
expiratory tidal volume.
At the end of the inspiration, the delivered tidal
volume is displayed as a bar (A).
At the end of the expiration, the difference between
the inspiratory and the expiratory tidal volume (F)
is displayed.
The expiratory tidal volume is displayed next to the
bar graph (C).
Using the volumeter (minute volume
measurement)
1 Touch the Start button (B) to start.
The bar graph displays the individual
measured breaths in segments (E). The
summed volume (D) is displayed next to the
bar graph.
2 Touch the Stop button (B) to stop.
3 To reset the volumeter and time display to zero,
touch the Reset button (B).
The volumeter stops automatically after
60 seconds. The measured values are displayed
for 4 minutes and then deleted.
Low-flow wizard (optional)
The low-flow wizard displays bar graphs for the
required fresh-gas flow and the total flow. Both bar
graphs are to the same scale. The required fresh-
gas flow is calculated on the basis of balancing the
gas volumes.
An evaluation of the total flow is displayed below
the bar graph:
An insufficient fresh-gas flow may trigger the
Fresh gas low or leakage or Emergency air inlet
activated alarms, for example.
10450
A
B
C
D
E
F
Volumeter
VT
Volume
20152
Evaluation Color Meaning
Too high Yellow The fresh-gas flow is
possibly too high. If the
fresh-gas flow can be
reduced, both fresh gas
and anesthetic agent will
be saved.
Efficient Green No action is necessary.
Too low Red The fresh-gas flow is too
low.
 Check the fresh-gas
flow.
 Check the position of
the breathing bag.
Refill bag Red The fresh-gas flow is too
low.
 Refill the breathing
bag immediately,
e.g., with O
2 flush.
Required FG flow
Total flow
Efficient