Patient Monitor User Manual Monitoring AG
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Figure 2. For optimal water handling, always use T-adapters with the sampling point in the center
of the adapter, as shown to the left above.
NOTE:
Using sample tubes or cannulas with larger inner diameter than 1 mm will increase ISA’s
total system response time.
For ordering information of Nomoline Family sampling lines, cannulas and related consumables,
please visit www.masimo.com.
17.3.1 Monitoring Steps for ISA Module
17.3.1.1 Performing a Pre-use Check
Before connecting the Nomoline sampling line to the breathing circuit, do the following:
1. Connect the sampling line to the ISA gas inlet connector (LEGI).
2. Check that the LEGI shows a steady green light (indicating that the system is OK).
3. For ISA OR+ and ISA AX+ module with O
2
option fitted: Check that the O
2
reading on the
monitor is correct (21%).
4. Breathe into the sampling line and check that valid CO
2
waveforms and values are displayed
on the monitor.
5. Occlude the sampling line with a fingertip and wait for 10 seconds.
6. Check that an occlusion alarm is displayed and that the LEGI shows a flashing red light.
7. If applicable: Perform a tightness check of the patient circuit with the sampling line attached.
17.3.1.2 Leakage Check
1. Connect a new Nomoline sampling line with male luer lock to the ISA LEGI and check that
the LEGI 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
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