[Microcirculation and oxygen tension in the cerebral cortex of rats with hemorrhagic shock].
Microcirculatory disturbances in pia mater are followed by change in oxygen tension in the brain cortex. Immediately after bleeding initial decrease of oxygen tension by 60-70% of the basal level was observed. This decrease was induced by initial vasoconstriction and brain cortex hypoxia. After compensation of blood circulation supervened and the cortical blood flow was set to a lower level (30-40 minutes after the decrease), there occurred a phase of oxygen level stabilization. The oxygen tension remained unchanged for a long time and decreased very slowly. More rapid fall of oxygen tension was noticed only at the end of the fourth hour when circulation decompensation set in.
D000818:Animals; D002540:Cerebral Cortex / Q000503:physiopathology*; D008297:Male; D008833:Microcirculation / Q000503:physiopathology; D010101:Oxygen Consumption; D010313:Partial Pressure; D051381:Rats; D011919:Rats, Inbred Strains; D012771:Shock, Hemorrhagic / Q000503:physiopathology*; D013997:Time Factors
Mikrotsirkuliatsiia i napriazhenia kisloroda v kore golovnogo mozga krys pri gemorragicheskom shoke.