User's Manual

Capnography
21-9
* The current barometric pressure measurement affects the maximum high and
low alarm limits for EtCO
2
when measured in %.
** Learned Alarm Limits
The respiration rate alarm limits default as shown below:
Condition Limit
RR <
12 LO = 1 BPM
RR > 12 LO = RR* 0.5 (truncated to the next lower resolution)
RR <
20 HI = 30 BPM
RR > 20 HI = RR* 1.5 (rounded to the next higher resolution)
The EtCO
2
high alarm limit defaults to the displayed value + 15% and is rounded
to the next higher resolution, when needed.
The EtCO
2
low alarm limit defaults to the displayed value – 15% and is truncated
to the next lower resolution, when needed.
Table 2: Alarm Limit Ranges
Monitored
Parameter
Units
Low Alarm High Alarm
Resolution
Minimum Default Maximum Minimum Default Maximum
EtCO
2
%0.0** 9.9 * 0.1 ** 10.0 * 0.1
EtCO
2
mmHg 0 ** 75 1 ** 76 1
EtCO
2
kPa 0.0 ** 9.9 0.1 ** 10.0 0.1
RR BPM 1 ** 145 15 ** 150
1 for 1 — 30
5 when > 30
APNEA sec - - - 20 30 45 5
MINCO
2
% - - - 0.1 1.0 9.9 0.1
MINCO
2
mmHg - - - 1 8 76 1
MINCO
2
kPa - - - 0.1 1.0 9.9 0.1
O
2
% 15 18 95 20 100 100
1 for 1 — 30
5 when > 30
!
• If the current EtCO
2
reading is 0 when the alarms are first
turned ON, special EtCO
2
limits are defined. If mmHg is
selected, the high and low limits are set to 0 and 1, respectively.
If % or kPa is selected, the high and low limits are set to 0.0 and
0.1, respectively.