Abstract
The monitoring of performance of dispersive electrocardiogram mapping and heart rate variability in 30 healthy volunteers aged from 18 to 59 years in a state of rest was done. It was found that micro-amplitude variations of elec trocardiogram have periodic characteristics, and these fluctuations are largely determined by changes in the balance of the autonomic nervous system. Increased electrical and ion-metabolic instability of right atrium is associated with increased heart rate variability and its vagal component, and the level of micro-amplitude fluctuations variation of velocity characteristics of the initial ventricular depolarization front -with the weakening of parasympathetic activity.
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