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American Focus > Blog > Health and Wellness > Survival rate for avalanche burials has increased by 10% since 1994, finds new analysis
Health and Wellness

Survival rate for avalanche burials has increased by 10% since 1994, finds new analysis

Last updated: September 26, 2024 5:45 pm
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Survival rate for avalanche burials has increased by 10% since 1994, finds new analysis
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Avalanche survival rates have seen a significant increase over the past four decades, thanks to advances in technology, increased avalanche training, and more efficient rescue efforts. According to a recent study published in the journal JAMA Network Open, the survival rate for avalanche burials has jumped by ten percent since 1994.

Lead author Simon Rauch, an emergency physician at Eurac Research, explains that the survival probability for buried victims has risen from 43.5% to 53.5% over the years. The analysis, which covers data from 1981 to 2020, also reveals that the survival rate for long-term burials lasting over 130 minutes has increased from 2.6% to 7.3%. Additionally, the average rescue time has decreased from 45 minutes to 25 minutes, with even faster rescue times when companions are present.

Hermann Brugger, a co-author of the study and author of the original 1994 research, notes that the phase where survival probability exceeds 90% has now shortened from 18 to just 10 minutes. This change has prompted a revision of the global reference point in mountain rescue protocols.

One hypothesis for the reduced survival window is the possibility of increased snow density due to climate change. Denser snow contains less air, making it harder for buried victims to breathe. However, further research is needed to confirm this theory.

Rauch emphasizes the critical role of time in avalanche rescues, highlighting that survival chances are three times higher when companions are able to dig out victims within the first ten minutes. The study underscores the importance of preventive measures such as avalanche warning services, ski tourer training, and advancements in location and rescue techniques, which have contributed to the decline in mortality rates for avalanche victims.

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The data for the study was provided by WSL, the Swiss Institute for Snow and Avalanche Research, with biostatistician Markus Falk contributing a detailed statistical analysis using a complex model. The findings shed light on the progress made in avalanche rescue efforts and the importance of quick and effective response in saving lives.

For more information, the study titled “Avalanche Survival Rates in Switzerland, 1981-2020” can be accessed in JAMA Network Open. Eurac Research, the institution behind the study, continues to lead research efforts in improving avalanche safety and rescue strategies.

TAGGED:analysisavalancheburialsfindsincreasedratesurvival
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