[Local pO2 measurements in the cochlear perilymph of guinea pigs in oxygen and oxygen/carbon dioxide breathing (author's transl)].
After breathing a mix of 10% CO2 and 90% O2 or hyperbaric O2 (2 bar absolute) an appreciable rise of pO2 can be demonstrated by D.C. polarography in the scala tympani of the guinea pig chochlea. When test animals are made to breathe 100% pure O2 at normal pressure the rise of pO2 is significantly less pronounced. The observations made in these animal experiments suggest that the inhalation of CO2O2 currently constitutes the only valid inhalation treatment in acute inner ear deafness. Further compression of hyperbaric O2 is associated with a clear-cut rise of pO2. It should, however, be remembered that hyperbaric oxygen may produce toxic effects in various body tissues.
D000818:Animals; D002245:Carbon Dioxide; D003051:Cochlea / Q000378:metabolism*; D006168:Guinea Pigs; D006931:Hyperbaric Oxygenation; D007761:Labyrinthine Fluids / Q000378:metabolism*; D010100:Oxygen / Q000097:blood*; D010101:Oxygen Consumption; D010313:Partial Pressure; D010498:Perilymph / Q000378:metabolism*; D011048:Polarography / Q000295:instrumentation
D002245:Carbon Dioxide; D010100:Oxygen
Lokale pO2-Messungen in der Perilymphe der Meerschweinchenkochlea bei Sauerstoff- und Sauerstoff-/Kohlendioxyd-Inhalationen.