Heart Rate Variability: for real doctors. Introduction


“Who diagnoses well, heals well,” is a truth that does not require confirmation.
The truth that “the doctor treats the patient, not the disease” does not require proof too. For this to happen, however, the doctor, first of all, must diagnose the patient, but not the disease.
The diagnosis of the patient is the clinical diagnosis. It contains the name of the disease following the International Classification of Diseases, severity, stage of development and features of the underlying pathological process, functional state of the organs involved in the pathological process, complications, general health, prognosis for recovery and life.
The patient’ health resources, development, and outcomes of the disease, the functioning of the organs and systems involved in the pathological process determine by the condition of regulation, and it is an essential part of the diagnosis.
Regulation is one of the most dynamic systems of our body, covers it as a whole, makes it an organism, and also determines the features of the other subsystems, organs and their structures in a wide range of physiological and pathological reactions. For the patient’s disease to proceed according to the most favorable scenario with the best possible outcome, it is necessary to have, of course, a qualitative regulation.
Among existing technologies, Heart Rate Variability (HRV) is advantageous. HRV is a non-invasive technology that allows real-time assessment of the patient’s regulatory systems with the solution of many prognostic, diagnostic and therapeutic tasks.

Tribute to history:
• HRV is a well-known phenomenon and the latest technology
• The prognostic value of HRV begins with the discovery of Meyer waves
• The physiological mechanisms of HRV were the first to be most fully described by R.M. Baevsky
• Intensification of HRV applications dates back to the 70s of the last century after the introduction of personal computers
• 1981 – the establishment of the prognostic significance of the methods of spectral analysis of the HRV in acute myocardial infarction and a sharp surge of interest in its practical applications
• Subsequent developments – methods of the mathematical theory of chaos, mathematical modeling, independent components, bioadaptive control, etc.
• The beginning of the third millennium – the spread of the technology of HRV in different fields of medicine and human life

Contribution to the development of HRV has been made by many scientists from various countries around the world. Not only in the post-Soviet, but in the world space, a lot has been done by R.М. Baevsky. At present, the number of publications in this area amounts to hundreds of thousands, and therefore all aspects of the clinical use of technology are the result of the fruitful work of a massive galaxy of theorists and practitioners.
1996 – the year of technology standardization and the development of recommendations for the practical use of HRV by the working group of the European Society of Cardiology and the North American Society of Stimulation and Electrophysiology.
The recommendations fulfilled the vital function of the regularization of scientific research and the practical use of HRV technology, creating an essential ground before the reproducibility and comparability of research results in different laboratories. In other words, scientists and doctors from various fields of science and clinical medicine, from different countries began to speak in one clear language.



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