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Related Experiment Videos

[New perspectives of avalanche disasters. Phase classification using pathophysiologic considerations].

H Brugger1, M Falk

  • 1Bergrettungsarzt im Alpenverein Südtirol, Ausbildungsarzt für den Verband Südtiroler Berg- und Skiführer, Italien.

Wiener Klinische Wochenschrift
|January 1, 1992
PubMed
Summary

Avalanche survival rates are high initially, but drop sharply after 15 minutes due to asphyxia. Survival beyond 45 minutes depends on an air pocket, with hypothermia becoming a risk after 90 minutes.

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Area of Science:

  • Avalanche survival analysis
  • Human physiology under extreme conditions
  • Trauma and emergency medicine

Context:

  • Analysis of 332 avalanche burials in Switzerland (1981-1989).
  • Utilized computer-assisted survival estimation (Turnbull method).
  • Examined pathophysiological factors influencing survival timelines.

Purpose:

  • To analyze avalanche survival rates and identify critical time phases.
  • To correlate survival probability with burial duration and physiological responses.
  • To inform avalanche rescue protocols and medical interventions.

Summary:

  • Initial survival probability (93%) within 15 minutes is high if not fatally injured and receiving first aid.
  • Survival drops dramatically between 15-45 minutes (asphyxia phase) to ~25% without an air pocket.

Related Experiment Videos

  • Survival beyond 45 minutes (latent phase) is possible with an air pocket, but hypothermia risk increases after 90 minutes.
  • Rescue phase carries increased mortality risk due to hypothermia and extrication stress.

    • Impact:

    • Highlights the critical 15-45 minute window for avalanche victim survival.
    • Emphasizes the importance of immediate rescue and the provision of air pockets.
    • Provides data to refine emergency response strategies for avalanche incidents.
    • Informs understanding of human physiological limits during avalanche burial.