Survival Differences Breathing Air and Oxygen at Equivalent Altitudes.

Survival Differences Breathing Air and Oxygen at Equivalent Altitudes.

Summary Mice were exposed progressively to equivalent degrees of hypoxia breathing air and breathing 100% O2. The inspired pO2 level at which unconsciousness set in was found to be significantly lower when air was breathed than when 100% oxygen was breathed provided the rate of ascent was 2 × 103 ft...

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Veröffentlicht in:Experimental biology and medicine (Maywood, N.J.) N.J.), 1949-01, Vol.70 (1), p.185-186
Hauptverfasser: Rahn, Hermann, Otis, Arthur B.
Format: Artikel
Sprache:eng
Schlagworte:
Altitude
Cell Respiration
Humans
Old Medline
Oxygen
Respiration
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Zusammenfassung:Summary Mice were exposed progressively to equivalent degrees of hypoxia breathing air and breathing 100% O2. The inspired pO2 level at which unconsciousness set in was found to be significantly lower when air was breathed than when 100% oxygen was breathed provided the rate of ascent was 2 × 103 ft/min or greater. This advantage of air over oxygen is attributed to the transient “N2 dilution” or R.Q. effect.
ISSN:0037-9727
1535-3702
1535-3699
DOI:10.3181/00379727-70-16868