14 Monitoring Carbon Dioxide
252
WARNING
Safety and effectiveness of the respiration measurement method in the detection of apnea,
particularly the apnea of prematurity and apnea of infancy, has not been established.
Prolonged delay: The selected apnea alarm delay may be prolonged by up to 17 seconds, if an apnea
occurs during the automatic zero process. This applies to the Microstream (M3015A/B) measurement
only.
Deriving Alarms From awRR
1 In the Setup CO₂ menu, select awRR.
2 In the Setup awRR menu, select Alarms.
3 Choose On to derive alarms from the airway respiration signal or Off to disable them.
Changing awRR Alarm Limits
1 In the Setup CO₂ menu, select awRR.
2 Select High Limit to set the upper alarm limit.
Select
Low Limit to set the lower alarm limit.
3 Select the appropriate setting.
Changing IPI Alarm Limits
1 In the Setup CO₂ menu, select IPI.
2 Select Low Limit to set the low alarm limit.
3 Select a value between 2 and 9.
If you also have monitors with earlier software revisions than J.0, the IPI low alarm will not be
generated after a transfer to one of these monitors, or when a monitor/MMS with the IPI functionality
is connected to one of these monitors in companion mode. In this case, do not rely only on the IPI
low alarm but leave the individual alarms switched on (etCO
2
, awRR, pulse rate and SpO
2
) so that
these alarms can be generated in such situations.
Understanding the IPI Numeric
The index is modeled on normal healthy patients (ASA Physical Status value of 1 according to the ASA
Physical Status Classification System). Patients with ASA Physical Status values of 3 or higher are
expected to have low IPI values by definition. Therefore, for patients with an ASA Physical Status
value of 3 or higher, the index may have no added value.
The value of the Integrated Pulmonary Index given in the IPI numeric is associated with the patient
status as follows:
IPI Patient Status
10 Normal
8-9 Within normal range
7 Close to normal range; requires attention
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