Hypoxia and hypercapnia during respiration into an artificial air pocket in snow: implications for avalanche survival
| Autor: | Liselotte Adler-Kastner, Roland Meister, Markus Falk, Peter Mair, Wolfgang Schobersberger, Günther Sumann, H. C. Gunga, Hermann Brugger |
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| Rok vydání: | 2003 |
| Předmět: |
Adult
Male Adolescent Survival Hypothermia Emergency Nursing Disasters Hypercapnia Snow Respiration Humans Medicine Prospective Studies Respiratory system Hypoxia Acidosis Cross-Over Studies business.industry Air medicine.disease Respiratory acidosis Accidents Anesthesia Emergency Medicine Breathing Female Acidosis Respiratory medicine.symptom Cardiology and Cardiovascular Medicine business |
| Zdroj: | Resuscitation. 58:81-88 |
| ISSN: | 0300-9572 |
| Popis: | Snow avalanche case reports have documented the survival of skiers apparently without permanent hypoxic sequelae, after prolonged complete burial despite there being only a small air pocket on extrication. We investigated the underlying pathophysiological changes in a prospective, randomised 2 x 2 crossover study in 12 volunteers (28 tests) breathing into an artificial air pocket (1- or 2-l volume) in snow. Peripheral SpO(2), ETCO(2), arterialised capillary blood variables, air pocket O(2) and CO(2), snow density, and snow conditions at the inner surface of the air pocket were determined. SpO(2) decreased from a median of 99% (93-100%) to 88% (71-94%; P |
| Databáze: | OpenAIRE |
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