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Related Experiment Videos

A simplified method for measuring helium closing volume.

K McClelland, C Mittman

    Chest
    |January 1, 1975
    PubMed
    Summary
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    A new, simple device delivers a constant helium volume for measuring airway closing volume. This method, using common materials, simplifies the procedure and yields comparable results to traditional techniques.

    Area of Science:

    • Pulmonary Function Testing
    • Respiratory Physiology

    Background:

    • Airway closing volume measurement is crucial for assessing small airway function.
    • Conventional methods for helium delivery can be complex and prone to error.

    Purpose of the Study:

    • To describe a simple, cost-effective device for delivering a constant volume of helium.
    • To simplify the procedure for measuring airway closing volume.

    Main Methods:

    • Construction of a device using a standard five-way valve and PVC plastic irrigation pipe.
    • The device facilitates uniform helium delivery and eliminates the need for valve changes during inspiration.

    Main Results:

    • The constructed device successfully delivers a constant volume of helium.

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  • Results obtained using the new device were comparable to those using conventional helium bags.

    • Conclusions:

    • This simple device offers a practical alternative for helium delivery in airway closing volume measurements.
    • The method simplifies the procedure and maintains accuracy in pulmonary function testing.