RU2303392C1 - Method of estimation of degree of influence of electromagnet fields onto human organism - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: interval cardiography is executed, followed by subsequent registration and account of total integrity of autocorrelation moments within sample of time row of cardiac intervals of heart rhythms. Autocorrelation function received is subject to approximation by first grade polynomial (y=kx+b) and three groups of risks are selected through angle of slope of straight line received. Magneto-sensitive people have angle of slope of approximation straight line, which angle reduces under effect of field. Magneto-negative people have angle of slope of approximation straight line, which angle increases under effect of field. Magneto-stable people have angle of slope of approximation straight line, which angle doesn't change.

EFFECT: improved precision of estimation of influence of magnetic and/or electromagnet fields onto human organism.

3 tbl, 2 dwg, 3 ex

Description

The invention relates to the field of life safety and can be used to assess the degree of human exposure to electromagnetic fields (EMF) emitted during the operation of various devices, such as computers, mobile and cell phones, televisions, microwave ovens and other equipment, including medical focus, as well as for the selection at risk of people working with cellular communications, with electrical and radio equipment and subject to the harmful effects of electromagnetic fields.

A known method for assessing the state of adaptive resources before and after exposure to physiological and psychological stress factors by intervalography (Bayevsky PM, Kirillov OI, Kletskin SM Mathematical analysis of rhythm under stress. M: Nauka, 1984, 230 p.) . However, the values that determine the level of operability of human regulatory systems, such as R.M.Baevsky’s myocardial voltage index or spectral wave densities and harmonics of various kinds in the heart rhythm, are complex, require large computational resources for their calculation, and are not quite suitable for assessing the nature of the effect on the functional state of the human body of such a harmful and dangerous stress factor as EMF.

The known method (RF patent No. 2195974, class A 61 N 2/00 - Method for forming a magnetotherapeutic effect and device for its implementation. A.M. Berkutov and others), in which, based on the registration of the sequences of the cardio intervals of the patient, they are calculated and compared with the norm an indicator of the activity of regulatory systems (PARS) before and after magnetic exposure in order to obtain a therapeutic effect. However, the parameters included in the PARS do not allow an accurate and reliable assessment of the influence of a magnetic or electromagnetic field, since the magnitude of PARS in many people remains virtually unchanged even with high EMF intensity.

The problem solved by the claimed invention is the creation of a simpler and more reliable way to control and objectively assess the degree of influence on a person of electromagnetic fields of various nature, nature and intensity. The technical result of the invention is to increase the reliability of determining the functional state before and after exposure to electromagnetic fields and selection at risk of persons most exposed to the negative effects of electromagnetic fields. The indicated result is achieved by using an increased amount of data when recording a cardiogram (at least 100 cardio intervals) with subsequent recording and taking into account the entire set of autocorrelation moments in a sample of the time series of the heart rhythm with subsequent mathematical and statistical processing of cardiointervalometry data according to a special algorithm, which consists in approximating the autocorrelation function of the time series heart rate polynomial of the first degree (y = kx + b) or graphically a straight line. By changing the angle of inclination (i.e., α = arctan (k)), the latter is judged on the degree of influence of EMF on a person. At the same time, according to the response of the body to the action of the magnetic and electromagnetic fields, three risk groups of people are distinguished:

magneto-positive - there is an improvement in adaptation indicators; magnetically negative - after the action of EMF, deterioration of indicators characterizing the state of regulatory functions is observed; and magnetically stable - indicators do not go beyond the norm.

The method does not require laborious calculations and building a histogram, which greatly simplifies the procedure for monitoring and assessing the degree of influence of EMF, and also turns out to be more sensitive to changes in the functional state of a person when exposed to this harmful stress factor.

Example 1

We studied the effect on humans of a permanent magnet with a magnetic field of 80 mlT at an exposure of 4 minutes. The studies were conducted with a group of students - volunteers, men and women aged 19-25 years. The total sample size is 80 people.

In table 1 and figure 1 and 2 presents the selected data of cardiointervalometry for 3 risk groups.

As can be seen from the above data, magnetically positive people initially have a large angle of inclination of the approximation line, which decreases when exposed to a magnetic field. In magnetically negative people, a small angle of inclination of the approximation line is initially observed, which increases with the influence of a magnetic field; in magnetically stable people, this angle practically does not change.

Example 2

The human exposure to 900/1800 MHz standard cell phones was studied.

Table 2 presents the selected cardiointervalometry data for 3 risk groups.

Example 3

We studied the effects of x-rays on humans in medical rooms during fluoroscopy and radiography.

Table 3 presents the selected cardiointervalometry data for 2 risk groups.

As you can see their examples, the method allows you to record changes in the adaptive stability of a person to magnetic and electromagnetic radiation of a different nature and more accurately monitor and evaluate the impact of this harmful factor.

Brief Description of the Drawings

Figure 1 shows: a change in the slope angles (α) of a straight line approximating the autocorrelation function before (A) and after (B) the magnetic field for a magnetically positive group.

Figure 2 shows: a change in the slope angles (α) of a straight line approximating the autocorrelation function before (A) and after (B) the magnetic field for a magnetically negative group.

Claims (1)

A method for assessing the degree of influence of magnetic and / or electromagnetic fields on the human body by analyzing adaptive resources by the method of interval cardiography, including evaluating the values of the activity indicators of regulatory systems, determining the autocorrelation dependence, characterized in that they perform interval cardiography with subsequent registration and taking into account the entire set of autocorrelation moments in the sample time series of cardiac intervals of the heart rhythm, approximate the obtained autocorrelation function of poly Ohms of the first degree (y = kx + b) and 3 groups of people risk are distinguished by the angle of inclination of the obtained straight line: magnetically positive - if the angle of inclination of the approximation straight line decreases when exposed to the field, magnetically negative - if the angle of inclination of the approximation straight line increases when the field is exposed, and magnetically stable - if the slope of the approximation line does not change.

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