Circadian rhythm of vegetative tone of hemodynamic regulation in the phase of anuria of acute renal failure in infants

Аннотация

The data of hourly monitoring by the method of assessing autonomic tone (AUT) in 37 children with acute renal failure (ARF) who were admitted with anuria from 1 to 5 days at the age of 10 months to 3 years 4 months were studied. A moderate tendency to increase the rnesor of the circadian rhythm of AUT was revealed in groups 1 and 3, and a normal value in children of group 2 on the first day of intensive therapy for the anuric phase of acute renal failure. In the dynamics, there was a moderate tendency to increase sympathotonic activity by 10-20% in patients of groups 1 and 2, in group 3 the increase in sympathotonic influences was 30-40%%. An unfavorable factor that creates an increased risk of aggravating the severity of the condition is a significantly significant excess of OBT in group 3 at night (from 11 pm to 5 am by 30%). A greater inclination to the hyperdynamic nature of changes in the circulatory system was found in group 2, in group 1, and a trend in group 3. The formation of the hyperdynamic type of hemodynamics was accompanied by an increase in myocardial oxygen demand.