[Regulation of PO2 in the area of the optic papilla of the minipig in hyperoxia].
PO2 measurements using a double barrelled recess type microelectrodes were measured in the optic nerve head of miniature pigs in normoxia and hyperoxia. Although periarteriolar PO2 increased markedly during systemic hyperoxia (100% oxygen breathing), the intervascular PO2 remained stable under hyperoxia. These results suggest a regulation of the tissue PO2 of the optic nerve head, as the retina does, at constant values during hyperoxia.
Pournaras
C J
CJ
Laboratoire d'Ophtalmologie expérimentale, Clinique Universitaire d'Ophtalmologie, H. C. U. Genève.
Munoz
J L
JL
Abdesselem
R
R
D000818:Animals; D006801:Humans; D009898:Optic Disk / Q000098:blood supply*; D010100:Oxygen / Q000097:blood*; D012171:Retinal Vessels / Q000502:physiology; D013552:Swine; D013556:Swine, Miniature; D014661:Vasoconstriction / Q000502:physiology
D010100:Oxygen
Régulation de la PO2 au niveau de la papille du porc miniature en hyperoxie.