Abstract |
Changes of the oxygen tension in the surface layers of cerebral cortex ( PtO2) and arterial blood (PaO2) in the conditions of hyperoxia occurred in anesthetized rabbits: raising of O2 partial pressure in altitude chamber to 1.0 and 2.0 kgs/cm2 increased PaO2 from 76.5 +/- 11.4 mm Hg to 472.3 +/- 63.1 and 1138.0 +/- 79.4 mm Hg respectively. Raising of O2 partial pressure in altitude chamber from 0.2 to 6.0 kgs/cm2 increased PtO2 from 34.9 +/- 12.0 to 1087.5 +/- 149.8 mm Hg. Obvious defence reactions of the organism developed at the moment of transition from air breathing to pure oxygen breathing under the pressure of 1.0 kgs/cm2. High effectiveness of these reactions preserved with the raising of pressure to 3.0 kgs/cm2 and weakened with the further raising of pressure to 4.0-6.0 kgs/cm2. With prolongation of exposure to the 2.0-3.0 kgs/cm2 pressure the defence reactions slackened as well.
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Authors | A I Selivra |
Journal | Fiziologicheskii zhurnal SSSR imeni I. M. Sechenova
(Fiziol Zh SSSR Im I M Sechenova)
Vol. 65
Issue 4
Pg. 513-20
(Apr 1979)
ISSN: 0015-329X [Print] Russia (Federation) |
Vernacular Title | Vliianie giperoksii na napriazhenie kisloroda v krovi i tkani mozga. |
PMID | 456665
(Publication Type: English Abstract, Journal Article)
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Chemical References |
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Topics |
- Animals
- Cerebral Cortex
(analysis)
- Hyperbaric Oxygenation
- Oxygen
(analysis, blood)
- Rabbits
- Respiration
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