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Definition of vr, main areas of application of the method, indications for use

HRV is the natural change in the intervals between heart contractions (duration of cardiocycles) of the normal sinus rhythm of the heart. They are called NN intervals (Norman to Norman). The sequential series of cardio intervals is not a set of random numbers, but has a complex structure, which reflects the regulatory effect on the sinus node of the heart of the autonomic nervous system and various humoral factors. Therefore, an analysis of the structure of HRV provides important information about the state of the autonomic regulation of the cardiovascular system and the body as a whole.

The cardiac centers of the medulla oblongata and the bridge directly control the activity of the heart, exerting chronotropic, inotropic and dromotropic effects. Chemical mediators serve as transmitters of nerve effects on the heart: acetylcholine in the parasympathetic and norepinephrine in the sympathetic nervous system.

We can conditionally distinguish 4 areas of application of HRV analysis methods:?

1. Assessment of the functional state of the body and its changes based on the determination of the parameters of the autonomic balance and neurohumoral regulation.

2. Assessment of the severity of the body's adaptive response to various stresses.

3. Assessment of the state of individual links in the autonomic regulation of blood circulation.

4. Development of prognostic conclusions based on an assessment of the current functional state of the organism, the severity of its adaptive responses, and the state of individual parts of the regulatory mechanism.

The practical implementation of these areas opens up a wide field of activity for both scientists and practitioners. The following is an indicative and very incomplete list of areas of use of HRV analysis methods and indications for their use, compiled on the basis of analysis of modern domestic and foreign publications.

The list of areas of use of HRV analysis methods:

1. Assessment of the autonomic regulation of the heart rhythm in practically healthy people (the initial level of autonomic regulation, autonomic reactivity, autonomic support of activity).

2. Assessment of the autonomic regulation of the heart rhythm in patients with various pathologies (changes in the autonomic balance, the degree of prevalence of one of the sections of the autonomic nervous system).
Obtaining additional information for the diagnosis of certain forms of diseases, for example, autonomic neuropathy in diabetes.

3. Assessment of the functional state of the regulatory systems of the body based on an integrated approach to the circulatory system as an indicator of the adaptive activity of the whole organism.

4. Determination of the type of autonomic regulation (vago-, normo- or sympathicotonia).

5. Prediction of the risk of sudden death and fatal arrhythmias in MI and coronary heart disease in patients with ventricular arrhythmias, in heart failure caused by hypertension, cardiomyopathy.

6. The allocation of risk groups for the development of life-threatening increased stability of the heart rhythm.

7. Use as a control method during various functional tests.

8. Evaluation of the effectiveness of therapeutic and preventive and recreational activities.

9. Assessment of the level of stress, the degree of tension of regulatory systems with extreme and sub-extreme effects on the body.

10. Use as a method of assessing functional states in mass preventive examinations of various populations.

11. Prediction of the functional state (stability of the body) during professional selection and determination of professional suitability.

12. The choice of optimal drug therapy, taking into account the background of autonomic regulation of the heart. Monitoring the effectiveness of therapy, dose adjustment of the drug.

13. Assessment and prediction of mental reactions by the severity of the vegetative background.

14. Monitoring the functional state in sports.

15. Assessment of autonomic regulation in the development process in children and adolescents. Application as a control method in school medicine for socio-pedagogical and medical-psychological research.

The presented list is not exhaustive and may be supplemented.
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Definition of vr, main areas of application of the method, indications for use

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