3-3
Operating Instructions
3
Display
Function
Keys
Use the following display function keys to operate the NAD Omicron
Monitor.
O2
The
O2
key is used to display the Inspiratory Oxygen screen. This is the
first screen to appear on the monitor when you turn on the system.
You must calibrate the oxygen sensor before oxygen data is displayed. For
greatest accuracy, you should complete the two-part calibration (first using
21% oxygen, then using 100% oxygen). After completing the first part (21%
calibration), the monitor will display oxygen concentration, and it will also
display
LO O2 CAL
to indicate that you have not performed the 100%
oxygen calibration.
CAUTION: The characteristics of the oxygen sensor change gradually
with time. To ensure accuracy, the oxygen sensor must be
recalibrated before each day’s use. If the oxygen sensor fails to
calibrate, refer to
“Troubleshooting” on page 5-1
.
PRES
The
Pres
key is used to display the Breathing Pressure screen. The unit
displays three digital values. The largest value represents the peak
pressure recorded during the last breath. The other two values are smaller
and are located below the peak pressure. The value to the left of the peak
pressure represents the minimum, while the value to the right of the peak
pressure represents the mean pressure during the last breath.
WARNING: If the NAD Omicron Monitor shows a reading of 127 cm H20
or -127 cm H20, DO NOT CONTINUE TO USE THE UNIT
IN CLINICAL SETTINGS. Remove the unit from use for
servicing.
MIN VOL
The
Min Vol
key is used to display the Minute Volume screen. The monitor
computes this parameter from a running average of tidal volumes from the
last four breaths, or 15 seconds, whichever is greater. It refreshes the
display after each breath.
TIDAL VOL
The
Tidal Vol
key is used to display the Tidal Volume screen. Tidal volume
is computed from expiratory flow and is updated after each breath.
RR
The
RR
key is used to display the Respiratory Rate screen. When
computing respiratory rate, the monitor counts both machine breaths and
the patient’s spontaneous breaths.
NEONATE/
ADULT
The
Neonate/Adult
key will not invoke the neonatal mode of operation; the
monitor is always in the adult mode of operation. Depressing this key will
cause the high and low alarm limits for Tidal Volume and Minute Volume
to revert back to the last user-saved or factory-preset alarm parameters
(see
Table 3-4 on page 3-7
for more information).