[The microcirculation in the cerebral cortex of rats at different stages of deep immersion hypothermia].
A 25-30 degrees C hypothermia significantly increased the capillary blood flow in the rat cerebral cortex. A deeper hypothermia (17-15 degrees C) led to a stable decrease in the blood flow up to initial level. Breathing ceased at this stage, the cardiac activity being evident for 30-40 minutes after this. Deep hypothermia also led to a reversible aggregation phenomenon which seemed not to hinder the blood flow.
Moskovskaia
S V
SV
Ivanov
K P
KP
Levkovich
Iu I
IuI
Mal'tsev
N A
NA
D000818:Animals; D001783:Blood Flow Velocity / Q000502:physiology; D002540:Cerebral Cortex / Q000098:blood supply*; D007035:Hypothermia / Q000503:physiopathology*; D007101:Immersion / Q000503:physiopathology*; D008297:Male; D008833:Microcirculation / Q000503:physiopathology; D018715:Microscopy, Video; D051381:Rats; D017208:Rats, Wistar; D012119:Respiration / Q000502:physiology; D013696:Temperature; D013997:Time Factors