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Related Experiment Videos

Screening for oxygen intolerance in U.S. Navy divers.

F K Butler, M E Knafelc

    Undersea Biomedical Research
    |March 1, 1986
    PubMed
    Summary
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    The U.S. Navy

    Area of Science:

    • Hyperbaric medicine
    • Diving physiology
    • Occupational health

    Background:

    • The U.S. Navy screens diving candidates using the oxygen tolerance test (OTT).
    • Recent observations identified divers reproducibly sensitive to oxygen.
    • Multiple OTTs did not detect toxicity in these susceptible divers.

    Purpose of the Study:

    • To evaluate the effectiveness of the OTT in identifying oxygen susceptibility.
    • To analyze oxygen toxicity incidents during Navy diving operations.
    • To assess the safety record of U.S. Navy diving with 100% oxygen.

    Main Methods:

    • Reviewed 1347 oxygen tolerance tests (OTTs) from 1972-1981.
    • Analyzed diving accident records for oxygen toxicity episodes.
    • Examined oxygen toxicity in operational mixed gas and closed-circuit oxygen diving.

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    Main Results:

    • A 1.9% failure rate for OTTs was derived from 26 oxygen toxicity episodes.
    • Nine nonconvulsive oxygen toxicity episodes occurred in mixed gas diving.
    • Three nonconvulsive oxygen toxicity episodes occurred in closed-circuit oxygen diving.

    Conclusions:

    • Intraindividual variation complicates oxygen intolerance screening.
    • The OTT does not identify all susceptible individuals.
    • The OTT should continue for identifying unusually susceptible divers.