Operation Everest II: Alveolar and Arterial Blood Gases at Extreme Altitude,
Abstract
The relationship between alveolar P02 and PC02 at altitudes up to the summit of Mt. Everest (barometric pressure (Pb) =240 torr) has been investigated in a small number of individuals during mountaineering expeditions and one hypobaric chamber study. No previous study has measured these values on the same subjects throughout an entire ascent and confirmed their results with arterial blood gases. Alvelolar gases were measured daily on eight healthy male subjects in a decompression chamber from sea level to a simulated summit of Mt. Everest (Pb=240torr). Arterial blood gases were measured on eight occasions. Below 575 torr, a linear relation was observed between P02 and PC02 in both arterial and alveolar samples. A linear relation was also observed for P02 and Pb, and PC02 and Pb for both arterial and alveolar
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1986
- Accession Number
- ADA173401
Entities
People
- Allen Cymerman
- John R. Sutton
- John T. Reeves
- Mark K. Malconian
- Paul B. Rock
Organizations
- United States Army Research Institute of Environmental Medicine