Effectiveness of Oxygen-Nitrogen Gas Mixtures in Inducing Hypoxia at 1 ATA

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Effectiveness of Oxygen-Nitrogen Gas Mixtures in Inducing Hypoxia at 1 ATA

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Title: Effectiveness of Oxygen-Nitrogen Gas Mixtures in Inducing Hypoxia at 1 ATA
Author: Slobodnik, B; Wallick, MT; Chimiak, JM
Abstract: An understanding of the objective and subjective symptoms of hypoxia is deemed necessary to both aviators and divers to avoid mishaps resulting from a decreased partial pressure of oxygen (PO2). Current DOD hypobaric training profiles place aviator students at risk for decompression sickness (DCS). Despite recent efforts to minimize the potential for DCS, the incidence of hypobaric induced DCS remains undiminished. The purpose of this study was to identify an oxygen-nitrogen has mixture for use as an alternative method of inducing hypoxia in subjects at 1 ATA during naval aviation physiology training. Students could then be indoctrinated to the symptoms of hypoxia without being exposed to the risk of DCS. Twelve subjects, Navy divers from 25 to 48 years of age participated in this study. Six different nitrogen-oxygen gas mixtures were used. Three were selected to include and bracket a PO2 value of 7 percent which, by calculation, approximately equals the Navy physiology training altitude.
Description: Citation Status: Active; Citation Classification: Unclassified; Title Classification: Unclassified; Report Classification: Unclassified; Identifier Classification: Unclassified; Abstract Classification: Unclassified; Distribution Limitation(s): 01 - APPROVED FOR PUBLIC RELEASE; Information provided by the Department of Defense and the Defense Technical Information Center (http://www.dtic.mil/) is considered public information and may be distributed or copied unless otherwise specified. Use of appropriate byline/photo/image credits is requested.
URI: http://archive.rubicon-foundation.org/10987
Date: 1991

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