HEART RATE VARIABILITY AND DISPERSION MAPPING OF ECG IN MAGADAN REGION PRE-INDUCTEES WITH VAGOTONIC TYPE OF AUTONOMIC REGULATION

Abstract

Aim: Determination of quantitative characteristics of temporal variations in ECG dispersion mapping (DM ECG) and heart rate variability (HRV) in Caucasians, born in Magadan Region in the 1st and 2nd generation, with the initial vagotonic type of autonomic regulation. Methods: The ratio of HRV parameters to heart ECG was analyzed among male volunteers aged 15-17, whose initial autonomic nervous system (ANS) activity level was characterized by vagotonic orientation (68 people out of 160): moderate - group 1 (41 people) and pronounced - group 2 (27 people), respectively. Results: When comparing the HRV parameters with the averaged values of the DM for the "Rhythm" characteristic, it turned out that in group 2 the range of values corresponded to 19-40 % (the norm up to 20 %) significantly exceeding the values characteristic for group 1 (10-23 %). The "Myocardium" integral indicator values in the two groups were close to the upper limit of the norm (15-17 %). The greatest number of non-zero values indicating the reference pathology similarities is observed in G1-G2 and G9. More than half of the volunteers in group 2 had G1-G2 characteristics indicating depolarization deviations in the atria caused by different localization of the potentials. The G9 indicator deviations with a value fluctuations ranging up to 5 conv. units were observed more often. The non-expressed deviations of dispersion characteristics in terms of the G3-G8 indices toward the boundary states of the norm were single. Conclusions: In groups with a moderate and elevated level of autonomic regulatory contour influence on the heart rhythm, there are differences in all the analyzed cardiorhythm parameters. With pronounced vagotonic orientation, cardiorhythm deviations, similarly with the reference pathology in the processes of atrial depolarization caused by different localization of the potentials (G1-G2), as well as in the ventricle depolarization initial front velocity characteristics enhancements are noted more often (G9).