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Related Experiment Videos

Evalution of mechanical ventilators in a hyperbaric environment.

T J Gallagher, R A Smith, G C Bell

    Aviation, Space, and Environmental Medicine
    |February 1, 1978
    PubMed
    Summary

    The Emerson mechanical ventilator is the only device recommended for hyperbaric chamber use. Testing at 165 feet of seawater showed other ventilators failed under pressure.

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    Area of Science:

    • Hyperbaric medicine
    • Mechanical ventilation engineering

    Background:

    • Mechanical ventilators are crucial for respiratory support in hyperbaric environments.
    • Previous research has not comprehensively evaluated ventilator performance at extreme pressures.

    Purpose of the Study:

    • To assess the functional reliability of commonly used mechanical ventilators under hyperbaric conditions.
    • To identify safe and effective ventilator options for use in hyperbaric chambers.

    Main Methods:

    • Four mechanical ventilators (Emerson, IMV Bird, Urgency Bird, Modified Mark 2 Bird) were subjected to testing within a hyperbaric chamber.
    • Testing was conducted at simulated depths up to 165 feet of seawater (FSW).

    Main Results:

    • The pneumatic Emerson ventilator maintained function throughout the hyperbaric testing.
    • The IMV Bird, Urgency Bird, and Modified Mark 2 Bird ventilators all experienced failures at tested depths.

    Conclusions:

    • The Emerson mechanical ventilator is the only tested model suitable for hyperbaric chamber applications.
    • Further development may be needed for other ventilator models to ensure safety and efficacy in hyperbaric settings.

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