Abstract

AbstractThe concentration of potassium in plasma and cerebrospinal fluid obtained from the cistcina magna was determined in anesthetized kittens and adult cats before and after elevation of the potassium concentration in blood by means of 1) i.v. isotonic KCl‐infusion for 2 h arid 2) feeding with isotonic KC1 for 12 h. The results suggest that in anesthetized animals a slight decrease in CSF potassium concentration occurs postnatally. Elevation of the potassium concentration in blood caused a rise in CSF potassium concentration which was very slight in all age groups but was somewhat larger in the kittens than in the adults.

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