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Decompression: English tables.

P B James

    Schweizerische Zeitschrift Fur Sportmedizin
    |April 1, 1989
    PubMed
    Summary
    This summary is machine-generated.

    Current decompression procedures for divers assume no gas is released during "no-stop decompression". However, research shows gas bubbles do form, necessitating revised decompression table calculations.

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    Area of Science:

    • Diving Medicine
    • Hyperbaric Physiology
    • Biomedical Engineering

    Background:

    • Decompression procedures traditionally assume no gas liberation during "no-stop decompression" from exposures up to 2:1 atmospheric pressure.
    • This assumption underpins the calculation of most existing decompression tables, suggesting gas transport in solution.

    Purpose of the Study:

    • To investigate the validity of the "no-stop decompression" assumption regarding gas liberation.
    • To determine the necessity of revising decompression table calculations based on empirical findings.

    Main Methods:

    • Utilized ultrasonic scanning and Doppler techniques to detect gas presence during decompression.
    • Analyzed data to assess bubble formation and circulation during simulated dives.

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    Main Results:

    • Empirical evidence from ultrasonic scanning and Doppler techniques contradicts the "no-stop decompression" assumption.
    • Demonstrated the presence of circulating gas bubbles, indicating gas liberation during decompression.

    Conclusions:

    • Decompression tables must be reformulated to account for the actual presence of gas bubbles.
    • Future decompression strategies should consider bubble dynamics, critical diameter, and oxygen-induced unsaturation.