title: [The dynamic of annual modification of phasic structure of cardiac cycle in children of junior school age].
abstract: By using of the method of tetrapolar impedance rheopletysmography we studied the phasic structure of cardiac cycle in children of junior school age. We have shown that a decrease of cardiac cycle duration in children is due to a decrease of the common diastole duration, the mean fraction of which in children of six years is 48.58% from the cardiac cycle duration. With age the duration of cardiac cycle increases. In 12 y.o. children this parameter is significantly higher (0.702 +/- 0.020s) that that observed in 6 y.o. children (0.636 +/- 0.017s). The shortest duration of cardiac cycle is detected in 10 y.o. children (0.617 +/- 0.018 s).
authors: A H
authors: AH
authors: Iashchenko
authors: O M
authors: OM
authors: Vdovychenko
mesh_terms: D000367:Age Factors; D002307:Cardiography, Impedance; D002648:Child; D003971:Diastole / Q000502:physiology*; D005260:Female; D006321:Heart / Q000502:physiology*; D006801:Humans; D008297:Male; D012574:Schools; D013334:Students; D013599:Systole / Q000502:physiology*; D013997:Time Factors