[Renal resistance in ethrane anesthesia]

The indices of renal functionality are studied during the course of ether anesthesia in order to ascertain the behaviour of the kidney subjected to narcosis with this drug. A sharp reduction in the minute volume of F.G. and P.R.E. is evidenced, together with an increase in renal resistances, especially as regards the efferent sector. These changes, which are established at the start of anesthesiological treatment, tend to decrease in intensity as narcosis continues. This picture is interpreted as being due to the concomitant action of two factors: a decrease in cardiac output on the one hand, and an increased incretion of catecholamines leading to renal arteriolar vasoconstriction on the other.