Issue: 2011, Vol. 16, No. 3

Nikolaeva Т. Н., Dashichev В. В.

INIТIAL STATUS AND DYNAMICS OF CARDIAC RНYTHM INDICES IN PREMATURE NEWBORNS IN EARLY POSТNATAL ADAPTAТION PERIOD

Keywords

prematurenewborns, cardiac rhythm variability, postnatal adaptation, hypersymphaticotony, autonomous nervous system

Abstarct

Initial functional status and regularities of early postnatal adaptation of autonomous nervous system inpremature newborns were studied. Cardiac rhythm variability was determined by variation pulsography (R. M. Baevsky technique) and cardiorhythmogram frequency spectrum analysis. It was stated that premature newborns in early postnatal ontogenesis were characterized by manifested sympathicotony ("hypersympathicotony"). It was ontogenetically assured by more ancient peripheral apparatus of sympathetic part of autonomous nervous system and by compensatory neurohumoral hyperstimulation of its morphologically immature central apparatus; this fact both provided the elapsing of trophic processes in premature organism and created the situation of "decompensation risk" of autonomous nervous system especially in the newborns aged 6-10 days.