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Diving and hypothermia.

P Hayes1

  • 1Department of Biomedical Sciences, University of Aberdeen, Scotland.

Arctic Medical Research
|January 1, 1991
PubMed
Summary
This summary is machine-generated.

Diving in cold water poses risks of hypothermia, especially to extremities. Innovations like heated gloves aim to improve diver safety and performance in challenging underwater conditions.

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Area of Science:

  • Physiology
  • Occupational Health
  • Marine Biology

Background:

  • Hypothermia is a significant risk for divers, impacting comfort and performance, particularly in extremities.
  • Divers face thermal challenges from cold water immersion and respiratory heat loss, especially in deep or prolonged dives.
  • Current protective measures for divers' extremities are often insufficient, leading to discomfort and potential injury.

Purpose of the Study:

  • To review the challenges of thermal regulation in diving.
  • To discuss the energy requirements for thermal comfort in various diving scenarios.
  • To highlight recent advancements in diver thermal protection.

Main Methods:

  • Review of existing literature on diver physiology and thermal stress.

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  • Analysis of energy requirements for thermal management in different diving depths and types.
  • Examination of technological developments in diver thermal protection systems.

    • Main Results:

    • Free-swimming divers have limited durations in cold water (approx. 6 hours) due to core cooling and extremity issues.
    • Surface-supplied divers require significant thermal support (500-3500 Watts) depending on depth.
    • Deep diving with heliox can cause substantial respiratory heat loss (>300 Watts).

    Conclusions:

    • Hypothermia in diving is often due to equipment failure rather than a lack of physiological understanding.
    • Effective thermal management is crucial for diver safety and performance, especially for extremities.
    • Electrically heated hand wear represents a promising development for protecting inactive divers from cold injury.