Device for registering electric cardiosignals

FIELD: medicine; cardiology.

SUBSTANCE: device for registering electric cardiosignals has amplifier, analog-to-digital converter with multiplexer and arithmetic unit as well as increment code analyzer, switch unit, digital modem, increment code number counter, memory unit, control unit, heart electro-motive force vector projection forming unit, heart electro-motive force vector value determination unit and heart electro-motive force vector direction determination unit. Device has widened functional capabilities of electric cartographic testing by means of finding spatial disposition of electric axis of heart. Projection of heart vector to frontal plane is found from standard abstracts from extremities and to horizontal plane - from chest abstracts. Projection of vector of heart to sagittal plane is determined from projections of vector of heart to frontal and horizontal planes. Direction and value of projection of heart electro-motive force is determined from known projections in three-dimensional space.

EFFECT: improved efficiency.

4 cl, 7 dwg

 

The present invention relates to medicine, can be used for registration, analysis and transmission of electrocardiogram (EX).

Classical methods of recording and analysing the FORMER have already exhausted their resources and therefore are searching for improving diagnostic capabilities using new methods of processing and analysis of the FORMER.

In any textbook of cardiology or on the Internet site dedicated to cardiology, the methods of determining the electrical axis of the heart according to EX. The disadvantages of the known methods include manual (non-automatic) analysis and definition of the information parameters of the FORMER, the determination of the electrical axis of the heart in the frontal plane of the spatial coordinate system and the low accuracy of determination of the angle of the electric axis of the heart.

A device for transmitting EX [1], containing connected in series amplifier, multiplexer, analog-to-digital Converter, an arithmetic device, a buffer memory, a digital modem that implements the transfer method with the storage of the incoming data and transfer it in offline mode with a speed corresponding to the characteristics of the communication channel.

The disadvantages of the known device is that it takes a great time employment communication channel for transmission of information and a large buffer is Amati device for remembering at the transmitting end and the subsequent transfer of large amounts of information, as well as the lack of ability to identify and analyze the electrical axis of the heart.

Known selected as a prototype of the device for recording the FORMER [2], containing connected in series amplifier, analog-to-digital Converter with multiplexer and the arithmetic unit, and the code analyzer increments, a switch unit, a digital modem, the counter non-code increment the memory unit and the control unit, and the analyzer input codes increment is connected to the output of the arithmetic unit, the first output of the analyzer code increment connected to the first input switch unit, the second to the first input of the memory block, and a control output to the first input of the counter code number increment, a second input connected to the first the output of the control unit, the second and third outputs of the latter are connected respectively with the control input of the switch unit and the second input of the analog-to-digital Converter, and the output number counter code increment connected with the second input of the memory block, the output of which is connected with the second input of the switch unit, and the output switch unit with modem input.

The disadvantages of the known device is that upon registration the FORMER is not fixed the location of the electrical axis of the heart, without which is impossible modern CT is biodiagnostics.

In the known device the FORMER represented only by a set of code samples in the time domain. According to the authors, from the point of view of the representation of diagnostic information is not enough.

It is obvious that the registration of the ECG signal is not an end in cardiology. The process of cardiac information, in addition to registration, includes the steps of analysis and diagnosis. The ECG signal is the primary carrier of diagnostic information, and fixing upon check out as much as possible this information will provide more opportunities for analysis and will significantly improve the accuracy of diagnosis. Analysis of the electrocardiographic information is essential when planning a course of treatment, decision making in the diagnosis, finding ways to increase the effectiveness of treatment.

According to the authors of the present invention, it is necessary for the registration of the ECG signal to expand the scope of representation of diagnostic information by identifying the spatial distribution of the electric axis of the heart.

The invention is directed to expand the functionality of electrocardiographic studies by determining the spatial distribution of the electric axis of the heart.

This is achieved by the device is isto to register electrocardiogram, containing connected in series amplifier, analog-to-digital Converter with multiplexer and the arithmetic unit, and the code analyzer increments, a switch unit, a digital modem, the counter non-code increment the memory unit and the control unit, and the analyzer input codes increment is connected to the output of the arithmetic unit, the first output of the analyzer code increment connected to the first input switch unit, the second to the first input of the memory block, and a control output to the first input of the counter code number increment, a second input connected to the first output control unit, the second and third outputs of the latter are connected respectively with the control the input switch unit and the second input of the analog-to-digital Converter, and the output number counter code increment connected with the second input of the memory block, the output of which is connected with the second input of the switch unit, and the output switch unit with modem input entered connected in series forming unit projection vector EMF heart block determine the value of the vector EMF heart and the unit direction vector EMF heart, while the first and second inputs of the processing unit projection vector EMF hearts are connected respectively to the second output of the control unit and the output obtained is about-digital Converter, the output processing unit projection vector EMF heart is connected with the second input unit direction vector EMF hearts, the output of which is connected to the fourth input of the switch block, the block forming projections of the vector EMF heart contains a second memory block, and connected in series respectively to the first multiplier with the first accumulating the adder, the second multiplier with the second accumulating the adder, the third multiplier with the third storing the adder, the input of the second memory block and the first inputs of multipliers connected to the second output of the control unit, second and third inputs of multipliers connected respectively with the output of the analog-to-digital Converter and the output of the second memory block the outputs of the adders are output processing unit projection vector EMF heart block determine the value of the vector EMF heart contains the fourth, fifth and sixth blocks of multiplication, the adder and the block extracting the root, and the first and second inputs of the fourth, fifth and sixth multiplier units combined and connected respectively to the outputs of the first, second and third accumulative adders block the formation of the projections of the vector EMF heart, the outputs of the fourth, fifth and sixth multiplier units respectively connected with the first, second and third inputs summit the RA, sequentially connected to the operation block root extraction, the output of which is the output of the block defining the value of the vector EMF hearts, the unit direction vector EMF heart contains the first, second and third blocks of the arc cosine operation, the first inputs of which are connected respectively to the outputs of the first, second and third accumulative adders block the formation of the projections of the vector EMF heart, a second input connected to the output of the block root extraction, and outputs connected to the fourth input of the switch unit.

Put the blocks and their relationships are new properties that allow you to increase when registering the amount of diagnostic information by identifying the spatial distribution of the electric axis of the heart.

In Fig. 1 shows an image of the heart and vector EMF hearts in three-dimensional space. In Fig. 2 shows an image projection vector EMF heart on the front and the horizontal plane. In Fig. 3 shows the sequence of changing the direction of the vector EMF of the heart during ventricular stimulation in the frontal plane. In Fig. 4 shows a block diagram of a device for registration of electrocardiogram. In Fig. 5 shows a block diagram of the processing unit projection vector EMF heart. In Fig. 6 shows the block diagram block definition value the vector EMF heart. In Fig. 7 shows a block diagram of the unit direction vector EMF heart.

The heart is a three-dimensional body and it is obvious that electrical activity should be presented in the space. During contraction of the heart muscle is simultaneous excitation of many areas of infarction, and the direction vector of depolarization and repolarization in each of these areas can be different and even opposite. While the ECG records some total or resultant EMF heart at the moment of excitation. The vector resultant EMF heart moves in the chest in three-dimensional space in the frontal, horizontal and sagittal planes.

The electrical axis of the heart represents the mean direction of the resultant vector of ventricular excitation. The position of the electrical axis gives an idea about the position of the heart in the chest. In addition, changing the position of the electrical axis of the heart is a diagnostic sign of some pathological conditions. Therefore, regular assessment of this indicator has important practical significance. The position of the electrical axis of the heart can also change with age and in certain mechanical effects (e.g., after a heavy meal).

The direction ve the Torah EMF hearts in three-dimensional space (see Fig. 1) set the guides of the cosines of the angles αxthat αy, αz. The direction of projection vector EMF of the heart in the frontal, horizontal and sagittal planes defined by the Euler angles α, β, γ [3].

Standard leads from limbs analyzes the corner αand in chest leads - angle β (see Fig. 2).

Now for the above reasons, the most practical application is the evaluation of the direction vector EMF of the heart in the frontal plane (angle α).

In Fig. 3 the arrows indicate the phase of excitation of the ventricles. During excitation of the left half of the interventricular septum registered vectors 1 and 2. Vectors 3 and 4 are conventionally represent the initial excitation of the right ventricle, attached to the excitation of the left ventricle. Vectors 5 and 6 reflect the time of the initiation of both ventricles with a marked predominance of EF of the left ventricle. Vector 7 is logged at the time when the excitation covered by the maximum number of fibers of the left ventricle. Then, in a unit of time, the process of depolarization covers fewer fibers of the left ventricle (vectors 8 and 9). The base excitation of the left ventricle correspond to the vectors 10 and 11. The number of vectors and stages of excitation in this case is arbitrary, however, these vectors is trejaut consistent direction and magnitude of the EMF of the heart during depolarization.

The direction of the EMF of the heart in a single fixed point in time represents the torque of the electric axis of the heart. The direction of this axis during ventricular depolarization changes all the time and also is an important diagnostic parameter characterizing the state of the cardiovascular system at a given time. After adding all these torque vectors according to the rules of addition of vectors is obtained the total vector corresponding to the direction of the electrical axis of the heart.

In the proposed device for standard leads from the limb is determined by the vector projection of the heart in the frontal plane, and in chest leads - on the horizontal plane. Then the projections of the vector heart on the front and the horizontal plane is determined by the projection of the vector heart on the sagittal plane. Next on the known projections are determined by the direction and magnitude of the vector EMF hearts in three-dimensional space.

The projection of the vector EMF of the heart in the frontal plane is defined by the standard leads from limb. The direction of the axes of the leads in this plane are given in degrees. The reference point (0°) conditionally accepted the radius, drawn horizontally from the electrical center of the heart to the left in the direction of the positive pole active I am the bound leads. For each standard abduction in the frontal plane is defined angle ϕ:

positive pole II standard lead is at an angle of +60°;

positive pole III standard lead is at an angle of +120°;

positive pole lead aVL is at an angle of -30°;

- the positive pole of lead aVF is at an angle +90°;

positive pole of aVR is at an angle -150°.

Electrocardiographic abnormalities in different derivations from the extremities can be seen as different projections of the same EMF heart on the axis of the data leads.

The block diagram of the device for registration of electrocardiogram (see Fig. 4) contains the amplifier 1, an analog-to-digital Converter with multiplexer 2, the arithmetic unit 3, the code analyzer increments of 4, the switch unit 5, the digital modem 6, the counter code number increment 7, the first memory unit 8, the control unit 9, block the formation of the projections of the vector EMF of the heart 10, the controller can determine the value of the vector EMF heart 11, the unit direction vector EMF heart 12.

Are connected to the amplifier 1, an analog-to-digital Converter with multiplexer 2, the arithmetic unit 3, the analyzer code increment 4, the switch unit 5, the digital modem 6. The second output of the analyzer code nature is tion 4 is connected to the first input of the memory unit 8, and control output from the first counter input code number increment 7. The second input of the counter code number increment 7 is connected to the first output control unit 9, the second and third outputs of the latter are connected respectively with the control input of the switch unit 5 and the second analog-digital Converter 2. The output of the counter code number increment 7 is connected with the second input of the memory unit 8, the output of which is connected with the second input of the switch unit 5. Are connected to the processing unit projection vector EMF of the heart 10, the controller can determine the value of the vector EMF heart 11 and the unit direction vector EMF heart 12. The first and second inputs of the processing unit projection vector EMF of the heart 10 are connected respectively with the second output control unit 9 and the output of the analog-to-digital Converter 2. The output processing unit projection vector EMF heart 10 is connected with the second input unit direction vector EMF of the heart 12, the output of which is connected to the fourth input of the switch unit 5.

The amplifier 1 is designed for amplification of the signals leads. Analog-to-digital Converter with multiplexer 2 is designed to convert a lead signals from analog form to digital form. The arithmetic unit 3 is designed to form each of the leads R is snasti the current and the previous code samples. The code analyzer increments 4 is designed to, first, the separation of the received code increment into two parts: the first part consists of two least significant bits of the code increments and significant digits (3 digits), the second part of the remaining six high-order bits of code increments, and, secondly, to analyze the second part of the received code increment. The switch unit 5 is designed for serial connection of the outputs of the analyzer code increments of 4, the first memory unit 8 and unit direction vector EMF heart 12 to the input of a digital modem 6. Digital modem 6 is designed for the transmission of information via communication channels. Count the number of code increments 7 is designed to determine the number of the current code increment. The first memory unit 8 is designed to store the values of the second part of the code increments under the condition different from zero at least one of the discharge. The control unit 9 is designed to synchronize and control the operation of the blocks of the device. Block the formation of the projections of the vector EMF heart 10 is designed to generate values of the projections of the vector EMF heart on the axis of the spatial coordinate system. Block determine the value of the vector EMF heart 11 is designed to determine the value of the vector EMF heart. The unit direction vector EMF heart 12 is designed to determine n the Board of the vector EMF heart.

The block diagram of the processing unit projection vector EMF heart 10 (see Fig. 5) contains the first multiplier 13, the first accumulating adder 14, the second multiplier 15, the second accumulating adder 16, the third multiplier 17, the third accumulating adder 18, the second memory block 19, the first 20, 21 second inputs and an output 22.

When connected in series respectively to the first multiplier 13 with the first accumulating the adder 14, the second multiplier 15 with the second accumulating the adder 16, the third multiplier 17 with the third storing the adder 18. The first and second inputs of the multipliers 13, 15, 17 are the first 20 and second 21 inputs of the processing unit projection vector EMF of the heart 10 and are connected respectively with the second output control unit 9 and the output of the analog-to-digital Converter 2. The second input 21 of the processing unit projection vector EMF heart 10 is connected to the input of the second memory block 19. The third inputs of the multipliers 13, 15, 17 connected to the output of the second memory block 19. The outputs of the adders 14, 16, 18 are output 22 of the processing unit projection vector EMF heart 10.

The first multiplier 13 forming unit projection vector EMF heart 10 is designed to find the vector EiOf projection of each of the i-th standard leads from the extremities to the OX axis of the spatial coordinate system. First accumulating adder 14 the Loka formation of the projections of the vector EMF heart 10 is designed to find the vector E Ohthe sum of the projections of the standard leads from the extremities to the OX axis of the spatial coordinate system. The second multiplier 15 block forming projections of the vector EMF heart 10 is designed to find the vector Ei_ozthe projection of each of the i-th standard leads from the extremities to the OZ axis of the spatial coordinate system. Second accumulating adder 16 forming unit projection vector EMF heart 10 is designed to find the vector Eozthe sum of the projections of the standard leads from the extremities to the OZ axis of the spatial coordinate system. The third multiplier 17 forming unit projection vector EMF heart 10 is designed to find the vector Eothe projection of each of the i-th standard chest leads on the OY axis of the spatial coordinate system. The third accumulating adder 18 forming unit projection vector EMF heart 10 is designed to find the vector EOSthe sum of the projections of the standard chest leads on the OY axis of the spatial coordinate system. The second memory unit 19 is used for storing values of the trigonometric functions of the angles of the directions of the axes of the standard leads.

Block diagram block definition values of the vector EMF heart 11 (see Fig. 6) contains 23 fourth, fifth, 24 and 25 sixth multipliers, the adder 26 and block the operation of taking the square is on the root of 27, the inlet 28 and outlet 29.

The first and second inputs of the fourth 23, 24 fifth and sixth 25 multiplier units combined are input 28 of the block defining the value of the vector EMF heart 11 and are connected respectively to the outputs of the first 14, second 16 and third 18 accumulative adders block the formation of the projections of the vector EMF heart 10. The outputs of the fourth 23, 24 fifth and sixth 25 multiplier units respectively connected with the first, second and third inputs of the adder 26, sequentially connected to the unit operation to retrieve the root of 27. The output of unit operations to retrieve the root of 27 is the output 29 of the block defining the value of the vector EMF heart 11.

The fourth multiplier 23 block determine the value of the vector EMF heart 11 is designed for squaring the values of EOh. The fifth multiplier 24 units determine the value of the vector EMF heart 11 is designed for squaring the values of Eoz. The sixth multiplier 25 block determine the value of the vector EMF heart 11 is designed for squaring the values of EOS. The adder block 26 determine the value of the vector EMF heart 11 is designed to sum the values of EOh2Eoz2EOS2. Block 27 square root extraction unit determine the value of the vector EMF heart 11 is designed to run the operation of taking the square root.

The block diagram of the unit direction vector EMF heart 12 (see Fig. 7) contains the first 30, 31 second and third 32 blocks the operation of the inverse cosine of the first 33 and second 34 inputs and output 35.

The first inputs of the first 30, 31 of the second and third blocks 31 of the operation of the arc cosine are the first input 33 of the unit direction vector EMF of the heart 12 and are connected respectively to the outputs of the first 14, second 16 and third 18 accumulative adders block the formation of the projections of the vector EMF heart 10. The second inputs of the first 30, 31 of the second and third blocks 31 of the operation of the arc cosine are the second entrance 34 of the unit direction vector EMF of the heart 12 and is connected to the output 29 of the block defining the value of the vector EMF heart 11. The outputs of the first 30, 31 of the second and third blocks 31 of the operation of the arc cosine are the output 35 of the unit direction vector EMF of the heart 12 and is connected to the fourth input of the switch unit 5.

The first 30, 31 second and third 32 blocks the operation of the arc cosine of the unit direction vector EMF heart 12 are designed to perform the inverse cosine and definitions on directing cosines of the angles αx, αy, αz.

The proposed device for registration is as follows.

In accordance with the rules of registration of ECG lead signals are recorded in the definitely of the sequence. The clock pulses from the output of the control unit 9 is fed to the input of block 2 and trigger the ADC and the multiplexer, so that the output of the ADC 2 and respectively to the inputs of the arithmetic unit 3 and unit formation of the projections of the vector EMF heart 10 codes appear amplitudes EX sequentially in each lead.

The arithmetic unit 3 forms for each of these code samples the difference between the current and the previous reference, and thus to the input of the analyzer code increment 4 flows 8 bit code increment signal with the sign (the 9th bit) sequentially for each abstraction. At the same time from the output of the control unit 9 clock pulses arrive at the counting input of the counter code number increment 7, resulting in the output of the counter 7 is formed code numbers calculated increment signal, i.e. its temporal coordinate. In the code analyzer increments 4 separates the received code increment into two parts; two minor category code increment and its sign bit (just 3 digits) via the input switch unit 5 are transferred directly to the digital modem 6 and further to the communication channel and transmitted to the receiving end. The values of the remaining six high-order bits of code increments are analyzed and if it is different from zero at least one discharge through the output unit 4 of the analyzer code increments the 6 is asratov fed to the input of the first memory block 8, where are remembered. At the same time under the condition different from zero the analyzer block codes increments 4 generates a write command time coordinates coming from the analyzer 4 to the input of the counter code number increment 7, which is determined by the number of the current code increment (time coordinate). If all 6 high-order bits of the incoming code increment equal to zero, then the two youngest and the sign bit of code increments as before, go on line for transmission, and the code analyzer increments 4 waits for the next code increment.

In block formation of the projections of the vector EMF heart 10 with each clock pulse of the control unit 9 according to the formula

the first 13 and second 15 multipliers are calculated projection of each of the 1st standard leads from the extremities to the axes OX and OZ spatial coordinate system of the person. Third 17 multiplier is determined by the value of the projection of the vector EMF heart on the OY axis of the spatial coordinate system of a person:

The first 14, second 16 and third 18 accumulate adders determine the sum of the projections of the vector EMF heart respectively on the axes OX, OZ and OY by formulas

The values of these projections unit determine the value of the vector EMF heart 11 calculated value is the vector EMF heart:

The direction of the vector EMF hearts in space during the cardiac cycle is defined directing cosines of the vector, i.e. the cosines of the angles αxthat αythat αz; vector EMF hearts in space forms with the coordinate axes. These angles are calculated by the unit direction vector EMF heart 12 by the following formulas

The procedure takes place until, until the end of the specified time of registration of the FORMER, which is determined by the duration of the time interval, released by a control unit 9. At the end of the registration interval control unit 9 stops the supply of clock pulses to the inputs of blocks 2 and 7, completing their work. Then the control unit 9 sends the command to the input of the switch unit 5, thereby connecting the input of the modem 6 to the output of the first memory block 8 and starting the transfer of the memory contents, i.e. memorized older bits of code increments and time coordinates. Then the control unit 9 sends the command to the input of the switch unit 5, thereby connecting the input of the modem 6 to the output of the unit direction vector EMF of the heart 12 and starting the transfer values of the angles αxthat αythat αzthat vector EMF hearts in space forms with the axes of spatial systems the coordinates of the person.

According to the authors of the present invention, such processing electrocardiographic information will allow you to get a complete picture of the location vector EMF heart in the chest. In addition, it should be noted an important feature of the proposed device: determining the spatial distribution of the electric axis of the heart is performed during registration electrocardiographic information in real time without additional time delay.

Considering the above, according to the authors, the proposed device during registration of the ECG signal useful diagnostic information to a greater extent in comparison with the known device.

Thus, the proposed registration and processing of ECG extend the functionality of the known device by defining the space of the electric axis of the heart, improving the diagnostic device properties and keeping his dignity in the original measurement accuracy ECG, to reduce the required volume of buffer memory and time employment of the communication channel.

Literature

1. Microcomputer medical system./Ed. by U. of Tompkins, M.: Mir, 1983, s.

2. Baum O., G. Kostov, L.A. Popov Device for registration of electrocardio signals. Patent RU No. 2008796 C1, MKI5And 61 In 5/0402, 1994.

3. To the pH,, Korn T. Handbook of mathematics. From.: Nauka, 1974.

1. Device for registration of electrocardiogram containing connected in series amplifier, analog-to-digital Converter with multiplexer and the arithmetic unit, and the code analyzer increments, a switch unit, a digital modem, the counter non-code increment the memory unit and the control unit, and the analyzer input codes increment is connected to the output of the arithmetic unit, the first output of the analyzer code increment connected to the first input switch unit, the second to the first input of the memory block, and a control output to the first input of the counter code number increment, a second input connected to the first output control unit, the second and third outputs the latter are connected respectively with the control input of the switch unit and the second input of the analog-to-digital Converter, and the output number counter code increment connected with the second input of the memory block, the output of which is connected with the second input of the switch unit, and the output switch unit with modem input, characterized in that it introduced connected in series forming unit projection vector EMF heart block determine the value of the vector EMF heart and the unit direction vector EMF heart, the first and the second inputs of the processing unit projection vector EMF hearts are connected respectively with the third output of the control unit and with the output of the analog-to-digital Converter, the output processing unit projection vector EMF heart is connected with the second input unit direction vector EMF hearts, the output of which is connected to the third input of the switch unit.

2. The device according to claim 1, characterized in that the shaping unit projection vector EMF heart contains a second memory block, and connected in series to the second multiplier to the second storing an adder, connected in series, the third multiplier with the third storing the adder, the input of the second memory block and the first inputs of the multipliers are first input of the processing unit projection vector EMF heart, second and third inputs of the multipliers are the second input unit, and the outputs of the adders are output block.

3. The device according to claim 1, wherein the block of determining the values of the vector EMF heart contains the fourth, fifth and sixth blocks of multiplication, the adder and the block extracting the root, and the first and second inputs of the fourth, fifth and sixth multiplier units are combined and input unit determine the value of the vector EMF heart, the outputs of the fourth, fifth and sixth multiplier units respectively connected with the first, second and third inputs of the adder, sequentially connected to the operation block root extraction, the output of which is the output of the block definition EIT is possible vector EMF heart.

4. The device according to claim 1, characterized in that the block definition vector EMF heart contains the first, second and third blocks of the arc cosine operation, the first inputs of which are the second input unit direction vector EMF hearts, their second inputs, the first input unit and outputs - the outputs of the block.



 

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7 cl, 1 dwg

FIELD: medicine; obstetrics.

SUBSTANCE: fetal cardiac rhythm is registered. Additionally cardiointervalography is performed with determination of spectral power density of maternal and fetal cardiac rhythm waves and selection of very low frequency VLF, low frequency LF and high frequency HF levels, regulator system tension index TI, cortizol and adrenaline level in maternal and fetal blood. Physiological pregnancy course is defined at adrenaline level of 28 ng/mol, cortizol level of 360 ng/ml, indices of VLF=120 relative units, LF=40 r.u., HF=20 r.u., TI=70 r.u., for the mother and at indices of VLF=25 r.u., LF=2 r.u., HF=1 r.u., TI=250 r.u. for the fetus; compensated form of chronic fetoplacental deficiency is detected at the adrenaline level of 46 ng/ml, cortizol level of 695 ng/ml, VLF=180 r.u., LF=50 r.u., HF=100 r.u., TI=160 r.u. for the mother and at VLF=45 r.u., LF=5 r.u., HF=1 r.u., TI=400 r.u. for the fetus; and decompensated form of chronic fetoplacental deficiency is detected at the adrenaline level of 2 ng/ml, cortizol level of 1003 ng/ml, VLF=900 r.u., LF=25 r.u., HF=10 r.u., TI=30 r.u. for the mother and at VLF=3 r.u., LF=1 r.u., HF=0 r.u., TI=700 r.u. for the fetus.

EFFECT: improved accuracy and information capacity of diagnostics of physiological pregnancy course and chronic fetoplacental deficiency forms.

1 dwg, 9 tbl

FIELD: medicine.

SUBSTANCE: electrodes of electric ECG potential registration are placed in zone of aorta and in zone of cardiac apex. Changes of electric potential on body in time are registered in form of diagram of ECG function. Near each electrode of ECG electric potential registration additional electrode is installed, onto which high-frequency signal from generator is supplied, and from electrodes of ECG electric potential registration modulated by fluctuations of arterial blood flow signal is obtained synchronously, said signal is amplified, converted into digital code and transmitted for rheogram registration to information processing unit, after which connection of ECG electric potential with change of pressure according to rheogram is connected in each phase, and phase peculiarities of arterial pressure change are diagnosed. Device for synchronous registration of rheogram from ECG electrodes consists of two ECG electrodes, commutator, first amplifier, first band filter, analogue-digital converter, controller, IR transmitter and information processing unit with first detector, commutator being inserted between electrodes and first amplifier, whose outlet through band filter is connected with first inlet of analogue-digital converter, whose outlet is joined to controller, whose first outlet is connected with commutator, and second outlet - with IR transmitter, connected with first detector of information processing unit. Two additional electrodes, second amplifier, second band filter, second detector and generator, switched to additional electrodes, are introduced into it, second commutator outlet is connected to inlet of second detector, whose output through second amplifier and second band filter is connected with second inlet of analogue-digital converter.

EFFECT: synchronous registration of phase characteristics of cardiac cycle and corresponding fluctuations of arterial pressure in heart vessels and aorta.

2 cl, 3 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to devices of medico-biological purpose, intended for registration and evaluation of fast-proceeding physiological reactions, emerging as response to produced stimuli. Device contains microcontroller, analogue-digital converter (ADC), first commutator, sensors of breast breathing, abdominal breathing, skin-galvanic response, arterial pressure, cardio-vascular activity, sensor of motor activity, power unit, preliminary amplifiers, signal amplifiers, filters, first and second digital-analogue converters (DAC), tool amplifier and unit of connection with personal computer, supplied with galvanic attenuator. Via amplifiers and filters sensors are connected with corresponding inputs of commutator whose controlling input is connected with first microcontroller bus, and output - with first input of tool amplifier. Second input of tool amplifier is connected to output of first DAC, third input - to output of second DAC, and output - to ADC input. Inputs of first and second DAC and group of inputs-outputs of ADC are connected with second microcontroller bus, whose third bus is connected to unit of connection with personal computer. Additional channel has possibility of connection to its input of face mimics sensor, piezoplethysmogram or variable component of skin-galvanic response and includes second electronic commutator, to whose outputs subchannels of processing of signals from corresponding sensor are connected. First subchannel includes successively connected preliminary amplifier and filter, second subchannel - preliminary amplifier, filter, signal amplifier and additional filter, and outputs of subchannels via third electronic commutator are connected to first commutator input. Controlling input of third commutator is connected with microcontroller.

EFFECT: registration of maximal number of physiological parametres and ensuring objectivity of obtained information.

2 cl, 2 dwg

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