Conflicting aspects of the assessment of Heart Rate Variability in Patients with Cardiac Diseases

Abstract — Conflicting aspects of the clinical application of the heart rhythm variability (HRV) analysis in cardiovascular patients were critically analyzed. It was found that, in cardiovascular patients, the HRV pattern depended on not only mediators of autonomic nervous system but the electrophysiological state of myocardium and cardiac conduction as well. To make the HRV analysis more informative, the integral estimation method was substantiated, which allowed us to carry out the HRV analysis based on the main objective parameter of the rhythm pacing system, i.e., the heart beats, for both sinus and ectopic rhythms. The specific heart rhythm functions, namely scatter and concentration, were discovered. The scatter function was tested

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