infection.
Used airway adapters shall be disposed of in accordance with local regulations for biohazardous waste.
Do not use the IRMA Adult/Pediatric airway adapter with infants as the adapter adds 6 ml dead space
to the patient circuit.
Do not use the IRMA Infant airway adapter with adults as this may cause excessive flow resistance.
Measurements can be affected by mobile and RF communications equipment. It should be assured that
the IRMA probe is used in the electromagnetic environment specified in this manual.
Use of high frequency electrosurgical equipment in the vicinity of IRMA may produce interference and
cause incorrect measurements.
The IRMA probe is not designed for MRI-environments.
Do not place the IRMA airway adapter between the endotracheal tube and an elbow as this may allow
patient secretions to block the adapter windows and result in incorrect operation.
To keep secretions and moisture from pooling on the windows, always position the IRMA probe in a
vertical position with the LED pointing upwards.
Do not use the IRMA airway adapter with metered dose inhalers or nebulized medications as this may
affect the light transmission of the airway adapter windows.
Incorrect probe zeroing will result in false gas readings.
Replace the airway adapter if rainout/condensation occurs inside the airway adapter.
Use only Masimo manufactured IRMA airway adapters.
The IRMA probe is not intended to be in patient contact.
If, for whatever the reason, the IRMA probe is in direct contact with any parts of the infant's body an
insulation material shall be placed between the IRMA probe and the body.
No modification of this equipment is allowed.
15.9.2 Airway Obstruction
When the anesthetic gas airway is obstructed, on the screen there will be a prompt message “Sampling Line
Clogged”; if this occurs replace the Nomoline sampling line.
15.9.3 Leakage Check
1) Connect a new Nomoline sampling line with male Luer lock to the ISA gas inlet connector and check that the
gas inlet connector shows a steady green light.
2) Connect a short silicon tubing with an inner diameter of 3/32” (2.4 mm) to the Nomoline male Luer.
3) Exhale a long breath into the silicon tubing until the CO
2
concentration is greater than 4.5 vol% or 34 mmHg.
4) Quickly connect the silicon tubing tightly to the exhaust port.
5) Wait 1 minute until the CO
2
concentration has stabilized. Note the value.
6) Wait 1 minute and check that the CO
2
concentration has not decreased more than 0.4 vol% or 3 mmHg. If it
has decreased more there is a major leakage in the ISA unit or in the Nomoline. Do not operate the ISA if there
is a major leakage in the unit.
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