Physiological Monitoring
9650-1212-01 Rev. E
11
Zero Softkey
Adapter zeroing should be performed whenever you
change between reusable and disposable adapters.
Module zeroing may be necessary if the unit displays the
message
ZERO CO2 MODULE
. Adapter zeroing may
also be necessary if the unit displays
CHECK CO2
ADAPTER.
Note
Do not attempt zeroing for 20 seconds after
removing the adapter or cannula from the patient’s
airway. This time allows any CO
2
remaining in the
adapter or cannula to dissipate before zeroing. Do
not attempt to zero while the adapter or cannula is
in the patient’s airway. Zeroing with CO
2
in the
adapter or cannula can lead to inaccurate
measurements and/or other error conditions. If you
attempt zeroing while CO
2
remains in the adapter
or cannula, the time required to zero may be
increased. If zeroing cannot be completed, the
message
ZERO FAILED
will be displayed. If this
occurs, clear any occlusion in the adapter or
cannula, remove any source of CO
2
, wait 20
seconds, and try zeroing again.
Pressing the
Zero
softkey initiates adapter or module
zeroing.
The unit displays the
ZEROING CO2 ADAPTER
or
ZEROING CO2 MODULE
message during the zeroing
process, which is typically finished in 15 - 20 seconds.
The unit displays the
ZERO DONE
message when the
zeroing process is complete.
The unit displays the
ZERO FAILED
message if the
zeroing process did not complete successfully. If this
occurs, clear any occlusion in the adapter or sample line,
remove any source of CO
2
, and try zeroing again.
Pressing
Return
returns the user to the EtCO
2
submenu.
Zoom Softkey
Select the full scale range for the displayed capnogram
by pressing the
Zoom
softkey to scroll among the
different zoom levels. Zoom levels change with each
press of the
Zoom
softkey. They are as follows:
•
0-12.5 mmHg
•
0-25 mmHg
•
0-50 mmHg
•
0-75 mmHg
•
0-100 mmHg
•
0-150 mmHg
If the unit is using kPa or %, the scales are 0-1.7, 0-3.3,
0-6.6, 0-10, 0-13.3, and 0-20.0. (Refer to the
E Series
Configuration Guide
for instructions on how to configure
alternate units of measure.)
Average Softkey
The E Series unit provides 3 different time periods over
which EtCO
2
values are averaged: 1 breath, 10 seconds
(default), and 20 seconds.
The user can select the averaging period by pressing the
Average
softkey. When the
Average
softkey is pressed,
the unit displays the
Average
,
Enter
, and
Return
softkeys.
Pressing the
Average
softkey scrolls the highlighted
area among the different averaging periods.
Pressing the
Enter
softkey allows the user to select the
highlighted averaging period. Pressing the
Return
softkey returns the user to the EtCO
2
submenu.
Comp. Softkey
The E Series unit can compensate for elevated levels of
oxygen and/or the presence of nitrous oxide. Oxygen
compensation should be activated when oxygen levels in
excess of 60% are present in the airway circuit. Nitrous
oxide compensation should be activated when nitrous
oxide is present in the airway circuit. If the concentration
of oxygen in the breathing circuit exceeds 60% and
nitrous oxide is in use, both O
2
and N
2
O should be
activated.
When the
Comp
softkey is pressed, the unit displays the
Comp.
,
Enter
, and
Return
softkeys.
Pressing the
Comp.
softkey scrolls the highlight among
the different types of compensation available.
The O2&N2O selection turns oxygen and nitrous oxide
compensation on. The unit displays two asterisks (*) on
the left side of the CO2 field to indicate compensation for
both oxygen and nitrous oxide. The left asterisk indicates
oxygen compensation is active and the right asterisk
indicates nitrous oxide compensation is active.
The O2 selection turns oxygen compensation on and
displays an asterisk in the far left of the CO2 field. The
N2O selection turns nitrous oxide compensation on and
displays an asterisk to the right of the O2 asterisk. The
None selection turns all compensations off and
eliminates the asterisks from the display.
After selecting the appropriate compensation press
Enter
to activate the selected function. Pressing the
Return
softkey returns the user to the EtCO
2
submenu.
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