23
Using the 9847 Pulse Oximeter
•
Red
indicates that the pulse waveform amplitude is inadequate. During red pulse quality, SpO
2
and
pulse rate values are not updated. A high priority patient alarm occurs. After approximately
20 seconds, the values are replaced with dashes indicating that SpO
2
and pulse rate measurements
are not possible. (Also during this high priority patient alarm, the high priority audible pulse quality
alarm sounds if the audible alarms are not disabled.)
No Breath Indicator
The visible no breath indicator is a high priority patient visible alarm that flashes when a breath has not
been detected for a period of time exceeding the set no breath delay time (measured in seconds). During
this alarm, the high priority audible no breath alarm sounds if the audible alarms are not disabled. (See
“Audible No Breath Alarm” on page 27 for additional information.)
If a CO
2
sensor alarm occurs, existing visible and audible absence of breath indicators will latch. In most
cases, however, during “fixed pitch” breath beep mode, when the airway adapter tube is unsnapped from
the CO
2
sensor, the visible and audible absence of breath indicators will stop.
When a breath is again detected, the visible and audible no breath indicators will stop. The no breath
delay timer is first started when the CO
2
sensor is plugged into the 9847 and the system is not in setup
mode (when the lower bar is illuminated on the CO
2
display).
CO
2
Bar Graph
The CO
2
bar graph will remain blank until the CO
2
sensor is plugged in. When an
airway adapter tube is connected to the CO
2
sensor and an adequate signal is
detected, the bottom bar is initially illuminated. The bars will be illuminated to
indicate the change in CO
2
level as the patient exhales and inhales through the
airway adapter tube.
The 3rd and 6th bars of the CO
2
bar graph will be illuminated if a medium priority
(equipment) alarm is started. (See page 25 for additional alarm information.)
CO
2
values are displayed as a range between two threshold values. The threshold
values are located between each CO
2
bar. The values (displayed in both mmHg
and kPa) are an approximate measurement of the change in CO
2
level in the
airway adapter tube. For example, if four bars are illuminated, the detected CO
2
level change lies within the range >10 mmHg and <20 mmHg (the threshold
values).
NOTE:
Because the CO
2
detector is a semi-quantitative device, the rising and falling CO
2
bar
graph should NOT be interpreted as a CO
2
waveform.
m
m
H
g
k
P
a
75
30
50
2
6
10
20
10
4
7
0.3
0.8
1.3
2.6
Bottom
Bar
m
m
H
g
k
P
a
75
30
50
2
6
10
20
10
4
7
0.3
0.8
1.3
2.6
Sixth
Bar
Third
Bar
m
m
H
g
k
P
a
75
30
50
2
6
10
20
10
4
7
0.3
0.8
1.3
2.6
Threshold
Values