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dc.contributor.authorStrapazzon G
dc.contributor.authorPaal P
dc.contributor.authorSchweizer J
dc.contributor.authorFalk M
dc.contributor.authorReuter B
dc.contributor.authorSchenk K
dc.contributor.authorGatterer H
dc.contributor.authorGrasegger K
dc.contributor.authorDal Cappello T
dc.contributor.authorMalacrida S
dc.contributor.authorRiess L
dc.contributor.authorBrugger H
dc.date.accessioned2018-09-27T12:55:47Z
dc.date.available2018-09-27T12:55:47Z
dc.date.issued2017
dc.identifier.issn2045-2322
dc.identifier.urihttp://dx.doi.org/10.1038/s41598-017-17960-4
dc.identifier.urihttp://hdl.handle.net/10863/6118
dc.description.abstractBreathing under snow, e.g. while buried by a snow avalanche, is possible in the presence of an air pocket, but limited in time as hypoxia and hypercapnia rapidly develop. Snow properties influence levels of hypoxia and hypercapnia, but their effects on ventilation and oxygenation in humans are not fully elucidated yet. We report that in healthy subjects breathing into snow with an artificial air pocket, snow density had a direct influence on ventilation, oxygenation and exhaled CO2. We found that a rapid decline in O2 and increase in CO2 were mainly associated with higher snow densities and led to premature interruption due to critical hypoxia (SpO2 ≤ 75%). However, subjects in the low snow density group demonstrated a higher frequency of test interruptions than expected, due to clinical symptoms related to a rapid CO2 accumulation in the air pocket. Snow properties determine the oxygen support by diffusion from the surrounding snow and the clearance of CO2 by diffusion and absorption. Thus, snow properties are co-responsible for survival during avalanche burial.en_US
dc.language.isoenen_US
dc.rightsOpen Access This article is licensed under a Creative Commons Attribution 4.0 International License
dc.titleEffects of snow properties on humans breathing into an artificial air pocket - an experimental field studyen_US
dc.typeArticleen_US
dc.date.updated2018-09-27T12:51:24Z
dc.language.isiEN-GB
dc.journal.titleScientific Reports
dc.description.fulltextopenen_US


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