[Effects of cardioelectrostimulation and chemical preparations on autonomic nervous regulation of heart rate].

The aim of the study was to evaluate the peculiarities of heart rate variability and autonomic nervous system regulation and to predict the changes in sinus rhythm after successful medical or electrical correction. 72 patients with atrial fibrillation before and after its correction have been monitored. Atrial fibrillation during the first month after cardioversion occurred in 26.