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Document ID (ISN)101777
CIS number 03-862
ISSN - Serial title 0095-6562 - Aviation, Space, and Environmental Medicine
Year 2003
Convention or series no.
Author(s) Rice G.M., Vacchiano C.A., Moore J.L., Anderson D.W.
Title Incidence of decompression sickness in hypoxia training with and without 30-min O2 prebreathe
Bibliographic information Jan. 2003, Vol.74, No.1, p.56-61. Illus. 16 ref.
Abstract Naval aircrew are required to participate in hypoxia familiarization training. This training is considered high-risk due to the potential for barotrauma and decompression sickness (DCS). Prior analysis of the DCS in U.S. Navy hypobaric chambers revealed a significantly higher incidence among inside observers (IOs) than among students. In response to these reports, all IOs are required to de-nitrogenate by breathing 100% oxygen for 30min prior to altitude exposure. However, there have been no reports validating the efficacy of this measure. This study examined the incidence of altitude DCS during exposures to simulated altitudes of 25,000ft (25k) and 35,000ft (35k) in IOs and students, some who pre-breathed oxygen and some who did not. Results indicate that a 30-min pre-breathe prior to altitude exposure reduces the risk of DCS.
Descriptors (primary) decompression sickness; hypoxia; hypobaric facilities; aircraft; defence services; physical training
Descriptors (secondary) barotrauma; oxygen; oxygen breathing apparatus
Document type D - Periodical articles
Country / State or ProvinceUSA
Subject(s) Occupational pathology
Broad subject area(s) Physical hazards
Browse category(ies) Diseases of the respiratory system (except for pneumoconiosis & similar)
Air transportation
Fire fighting, police, prisons and the armed forces
Hyperbaric pressure