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Pulmonary Function Test • Publication 014181-001 Rev 02 • www.datasci.com ©2023 Data Sciences International
Loading the subject
At this point, you are ready to load the subject. Here is a suggested procedure:
1) Make sure the FRC valve is off - in Auto Position - to open the manifold to the atmosphere.
2) Make sure the Inspiration valve is on to bring fresh air in the manifold and clear CO2 build up
3) Other switches on the Pressure Panel should be in the Auto position
4) Connect the subject’s tracheal tube to the manifold inside the chamber
5) Make sure that there is no leak around the trachea. If there is a leak, it won’t be possible to inflate
the lungs to TLC during the PV and FV tests.
6) Inspect the height of the subject to ensure the end of the tracheal tube is not obstructed by
the trachea itself due to the subject’s position. Add tissue paper beneath the subject or
lower the bed as necessary.
7) Inspect the tracheal tube to ensure it is aligned straight. This is critical for the FV test.
8) Close up the chamber.
9) Watch the flow and pressure signals on the chart to ensure the subject is breathing with a
regular and even rhythm.
10) Flip the Inspiration valve to the Auto position.
11)
Immediately press the Play () button on the screen to start the task sequence.
12) The tests will run automatically (3x FRC tests, 3x PV tests and 3x FV tests).
13) After the tests have completed, turn on the ventilator for the RC measurements at the end.
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