Cardiointervalogram in healthy full-term newborn babies at the first 24 hours of life

Abstract

Objective. To reveal a specialty of cardiointervalogram (CIG) in healthy full-term newborn babies at the first 24 hours of life.

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Methods. 31 healthy full-term newborn babies were studied (mean birth weight 3,558 ± 420,6 gr, mean body height 50,5 ±1,7 cm). Within the first 24 hours of life a continuous recording of cardiointervalogram was being carried out. On processing the leadings 3 types of CIG were determined (Types I, II, III). They were different not only visually but could also be differentiated according to 3 main indices: variation range (DX), amplitude of mode (Amo) and coefficient of monotony (Cf. mon).

Results. It has been established that all three types of CIG are recorded in healthy full-term newborn babies within the first 24 hours of life. There are no quality differences in the characteristics of the types of CIG depending on the time passed from the moment of birth to the beginning of the recording. However, within the first two hours of life the presentation of 3 types of CIG is markedly changing: by the end of the second hour of life Type III of CIG is dominating, its duration increasing from 5,2% to 65,0% (p<0,01). In the following 6-24 hours of life the proportions achieved by the end of the second hour remain unchanged.

Conclusions. The data obtained could be used as the criteria of the normality in assessing the severity of cardiovascular and central nervous system defects in the newborn babies with perinatal pathology.