| Hypoxia awareness training for aircrew: a comparison of two techniques. | |
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MedLine Citation:
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PMID: 20824992 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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INTRODUCTION: Major hazards associated with hypoxia awareness training are the risks of decompression sickness, barotrauma, and loss of consciousness. An alternate method has been developed which combines exposure to a simulated altitude of 10,000 ft (3048 m) with breathing of a gas mixture containing 10% oxygen and 90% nitrogen. The paradigm, called Combined Altitude and Depleted Oxygen (CADO), places the subjects at a physiological altitude of 25,000 ft (7620 m) and provides demonstration of symptoms of hypoxia and the effects of pressure change. CADO is theoretically safer than traditional training at a simulated altitude of 25,000 ft (7620 m) due to a much lower risk of decompression sickness (DCS) and has greater fidelity of training for fast jet aircrew (mask-on hypoxia). This study was conducted to validate CADO by comparing it with hypobaric hypoxia. METHODS: There were 43 subjects who were exposed to two regimens of hypoxia training: hypobaric hypoxia (HH) at a simulated altitude of 25,000 ft (7620 m) and CADO. Subjective, physiological, and performance data of the subjects were collected, analyzed, and compared. RESULTS: There were no significant differences in the frequency and severity of the 24 commonly reported symptoms, or in the physiological response, between the two types of hypoxia exposure. CONCLUSIONS: CADO is similar to HH in terms of the type and severity of symptoms experienced by subjects, and appears to be an effective, useful, and safe tool for hypoxia training. |
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Authors:
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Bhupinder Singh; Gordon G Cable; Greg V Hampson; Glenn D Pascoe; Mark Corbett; Adrian Smith |
Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Aviation, space, and environmental medicine Volume: 81 ISSN: 0095-6562 ISO Abbreviation: Aviat Space Environ Med Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-09-09 Completed Date: 2010-09-28 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7501714 Medline TA: Aviat Space Environ Med Country: United States |
Other Details:
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Languages: eng Pagination: 857-63 Citation Subset: IM; S |
Affiliation:
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Royal Australian Air Force Institute of Aviation Medicine, Edinburgh SA 5111, Australia. bhupinder.singh@defence.gov.au |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aerospace Medicine* Altitude Sickness / physiopathology, prevention & control* Anoxia / diagnosis*, physiopathology, prevention & control* Female Humans Inservice Training / methods* Male Middle Aged Occupational Diseases / prevention & control Safety Management / methods Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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