Patient Monitor User Manual Monitoring AG
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Zeroing for IRMA AX+ probes:
Zeroing should be performed every time the IRMA airway adapter is replaced, or whenever an
offset in gas values or an unspecified gas accuracy message is displayed.
Allow 30 seconds for warm up of the IRMA AX+ probes after power on and after changing the
IRMA airway adapter before proceeding with the Zeroing Procedure. The green LED on the
probe will be blinking for approximately 5 seconds while zeroing is in progress.
19.3.4.4 Cleaning
The IRMA probe can be cleaned using a cloth moistened with maximum 70% ethanol or
maximum 70% isopropyl alcohol.
Remove the disposable IRMA airway adapter prior to cleaning the IRMA probe.
CAUTION
1
The IRMA airway adapters are non-sterile devices. Do not autoclave the devices as
this will damage them.
2
Never immerse the IRMA probe in liquid.
19.3.4.5 Maintenance
Gas readings should be verified at regular intervals with a reference instrument or by conducting
the gas check. The suggested interval is once every year.
19.3.4.6 MAC Calculation
The MAC value may be calculated and displayed by using end-tidal (ET) gas concentrations
according to the following formula:
MAC=%ET(AA
1
)/X(AA
1
)+%ET(AA
2
)/X(AA
2
)+%ET(N
2
O)/100
X(AA): HAL=0.75%, ENF=1.7%, ISO=1.15%, SEV=2.05%, DES=6.0%
19.4 Setting Apnea Alarm
Time
This determines the time limit after which the monitor gives an alarm if the patient stops
breathing.
1 Select the
CO
2
(AG) Setup
>
Apnea Alm
;
2 Choose the apnea alarm time from the pull-down list.
19.5 O
2
Compensations
The following models need O
2
compensation: IRMA AX+, ISA AX+, G7+ and G7S+. For the
compensation details, please refer to the following.
