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Effects of Fluctuations in Oxygen Partial Pressure from Normoxia to Moderate Hyperoxia
[Technical Report, Technical Report]
NAVAL MEDICAL RESEARCH UNIT (DAYTON) WRIGHT-PATTERSON AFB OHOak Ridge Institute for Science and EducationICON GPHS
Pagination or Media Count:
Pilots in modern tactical aircraft breathe oxygen-enriched gas supplied by onboard oxygen generating systems OBOGS. These may provide their maximum possible oxygen fraction at all times nominally 94, or, like that in the F-35, control the oxygen fraction at lower concentrations on a schedule based on altitude. The altitude-based schedules have a wide band of acceptable oxygen concentrations, and OBOGS that follow them may supply gas concentrations that fluctuate within the acceptable band. This IRB-approved study addressed a concern that unsteady oxygen partial pressure might be related to physiological episodes PEs. Oxygen concentrations of 21 air and 35 were supplied on the ground to approximate operational conditions in which the inhaled partial pressures fluctuate by 15 from normoxia to slight hyperoxia at a cabin altitude of 8,000 feet.
[A, Approved For Public Release]