System for estimating functional cardiovascular system condition

FIELD: medical engineering.

SUBSTANCE: system has device for measuring and recording biopotentials, device for measuring and recording movement parameters having the first accelerometer, the second accelerometer, the third accelerometer, the first instrumentation amplifier, the second instrumentation amplifier, the third instrumentation amplifier, multi-channel analog-to-digital converter, microcontroller, long-term storage, the first external interface adapter, timer, data analysis device comprising computer, graphic display unit, the second external interface adapter and system interface backbone. The first, the second and the third accelerometers are connected via the first, the second and the third instrumentation amplifiers to multi-channel analog-to-digital converter input cannels. The analog-to-digital converter is connected to the microcontroller. The microcontroller has long-term storage, external interface adapter and timer. The external interface adapter input/output serves as external interface adapter input/output of the device measuring and recording movement parameters. The device for measuring and recording biopotentials is connected to input channel of the device for measuring and recording movement parameters comprising microcontroller input via the second data transfer channel. The first and the second external interface adapters are connected to each other via the first data transfer channel. The computer and the second external interface adapter are connected to each other via system interface backbone. The graphic display unit is connected to the computer.

EFFECT: wide range of functional applications; high diagnosis accuracy.

7 cl, 1 dwg

 

The invention relates to medical equipment and can be used to diagnose the condition of the cardiovascular system.

Known electrocardiograph [1]. This electrocardiograph contains electrodes for removal of biopotentials from the chest of the patient, the electrodes for the removal of biopotentials with the patient's limbs, multichannel biopotential amplifier, block low-pass filters, connected in series multiplexer, analog-to-digital Converter, a signal processing and recording.

Electrocardiograph [1] provides removal potentials of electrocardiograms (ECG), which are used for the formation of the twelve common lead ECG. Known electrocardiograph [1] does not allow measurement of biopotentials in a long time.

A device for assessing the functional state of the cardiovascular system "Cardiometer" [2], which is the closest to the proposed system and selected as a prototype. The system for assessing the functional state of the cardiovascular system contains electrodes for removal of biopotentials from the chest of the patient, the electrodes for the removal of biopotentials with the patient's limbs, block low-pass filters, multi-channel biopotential amplifier, connected in series multiplexer, Ana the CSO-digital Converter and the processing unit and Desk. The device also includes first and second generators packs synchronous pulses of the excitation current frequency (10-100)·103Hz, the repetition period of the packs are at least ten times the duration of the packs synchronous pulses of the excitation current. The first and second electrodes to supply the excitation current to the upper extremities of the patient electrically connected with the first pins respectively of the first and second generators packs synchronous pulses of the excitation current, the first and second electrodes to supply the excitation current to the lower extremities of the patient connected to the electrically connected between a second conclusions of the first and second generators packs of pulses of the excitation current. In addition, the device also includes first and second differential amplifiers AC, the first inputs of which are connected with the electrodes for the removal of biopotentials from the upper extremities of the patient, and their second inputs electrically connected with each other and the electrodes for the removal of biopotentials from the lower extremities of the patient, the adder, the first and second inputs connected to the outputs respectively of the first and second differential amplifiers, AC, detector, an input connected to the output of the adder, a lowpass filter and a bandpass filter whose inputs are electrically who are interconnected and connected to the output of the detector, when this unit lowpass filter connected to the electrodes for the removal of biopotentials from the chest of the patient, the electrodes for the removal of biopotentials from the upper extremities of a patient and electrically interconnected electrodes for removal of biopotentials from the lower extremities of the patient. The outputs of block low-pass filters connected to respective inputs multichannel biopotential amplifier, the inputs of the multiplexer are connected to the outputs of the multichannel biopotential amplifier, the output of the lowpass filter and the output of the bandpass filter.

The disadvantage of the prototype of the proposed system to evaluate the functional state of the cardiovascular system is the inability to compare data from the electrocardiogram data on physical activity in each moment of time,

The problem solved by the invention is the ability to compare data from the electrocardiogram data on physical activity in each moment of time.

The invention consists in that the system for assessing the functional state of the cardiovascular system contains a device for measuring and recording of biopotentials, the device measures and records the motion parameters, which contains the first accelerometer, the second Axel is Omer, the third accelerometer, the first measuring amplifier, the second measuring amplifier, the third measuring amplifier, multi-channel analog-to-digital Converter, microcontroller, long-term storage device, the first adapter external interface, timer, data analysis, which contains the electronic computer, the device for displaying graphical information, the second adapter external interface, system interface line, the first, second and third accelerometers respectively through the first, second and third measuring amplifiers are connected to the inputs of the multi-channel analog-to-digital Converter that is connected to the microcontroller, the microcontroller is also connected to long-term storage device, the external adapter interface and timer, input-output adapter external interface is an input / output external device interface measurement and recording of the motion parameters, the device of the measuring and recording of biopotentials connected via the second data channel to the data input device of measuring and recording the motion parameters formed by the input of the microcontroller, the first and second adapters external interface connected between a first data transmission channel, computing the Ashina and the second adapter external interface connected via the system interface trunk to electronic computing machine connected device for displaying graphical information.

System for assessment of functional state of the cardiovascular system can additionally include a three-axis angular rate sensor, which is connected through the block instrumentation amplifiers with multi-channel analog-to-digital Converter, pulse oximeter, the output of which is connected to the microcontroller, blood pressure meter, the output of which is connected to the microcontroller, the temperature sensor, the output of which is connected to the microcontroller, the breath sensor, the output of which is connected to the microcontroller, the meter body resistance, the output of which is connected to the microcontroller.

The essence of the invention illustrated by the drawing, which shows a functional diagram of the proposed system.

In the drawing:

1 - the unit of analysis data;

2 - the unit of measuring and recording the motion parameters;

3 - device measurement and recording of biopotentials;

4 - first data channel;

5 - second data channel;

6 - the first accelerometer;

7 - second accelerometer;

8 - the third accelerometer;

9 - the first instrumentation amplifier;

10 - second instrumentation amplifier;

11 - third of retelny amplifier;

12 is a multichannel analog-to-digital Converter;

13 - microcontroller;

14 - long-term storage device;

15 - the first adapter external interface;

16 - timer;

17 - input-output external interface;

18 - pulse oximeter,

19 - blood pressure meter;

20 - the temperature sensor;

21 - the breath sensor;

the 22 - meter resistance body;

23 - three-axis angular rate sensor;

24 is a block instrumentation amplifiers;

25 - electronic computing machine (computer);

26 is a device for displaying graphical information (WAGE);

27 - the second adapter external interface;

28 - system interface line;

29 - data input device 2 measuring and recording the motion parameters.

System for assessment of functional state of the cardiovascular system containing device 3 measurement and recording of biopotentials, unit 2 measuring and recording the motion parameters, which contains the first accelerometer 6, the second accelerometer 7, the third accelerometer 8, the first measuring amplifier 9, the second measuring amplifier 10, the third measuring amplifier 11, multichannel analog-to-digital Converter 12, the microcontroller 13, long-term storage device 14, the first adapter 15 to the external interface, the timer 16, the device 1 and the aleesa data which contains the electronic computer 25, the device 26 for displaying graphical information, the second adapter 27 external interface, system interface line 28, while the first, second and third acceleration sensors 6, 7 and 8 respectively through the first, second and third measuring amplifiers 9, 10 and 11 are connected to the inputs of the multi-channel analog-to-digital Converter 12, which is connected to the microcontroller 13, the microcontroller 13 is also connected long-term storage device 14, the adapter 15 to the external interface and the timer 16, the input-output adapter 15 external interface is the entrance-exit 17 on the external interface device 2 measuring and recording the motion parameters, device 3 measurement and recording of biopotentials connected through the second channel 5 data transfer to the data input device 2 measure and record the motion parameters formed by the input of the microcontroller, the first and second adapters 15 and 27 of the external interface is connected between a first channel 4 data transfer, electronic computer 25 and the second adapter 27 external interface connected via the system interface line 28, to electronic computing machine 25 connected device 26 for displaying graphical information.

System for assessment of functional state of the ser is echno-vascular system can additionally include a three-axis sensor 23 angular velocity, which is connected through the block 24 of the measuring amplifiers with multi-channel analog-to-digital Converter 12, the pulse oximeter 18, the output of which is connected to the microcontroller 13, the meter 19 blood pressure, the output of which is connected to the microcontroller 13, 20 gauge temperature, the output of which is connected to the microcontroller 13, the sensor 21 of the breath, the output data of which is connected to the microcontroller 13, the probe 22 of the body resistance, the output of which is connected to the microcontroller 13.

Device 3 measurement and recording of biopotentials contains a set of electrodes mounted on the body, multi-device input analog signals, the microprocessor (microcontroller), a storage device and adapter external interface. The input device analog signals includes measuring amplifiers and analog-to-digital converters. The input device analog signals can be performed similarly to the input analog signals used in electrocardiographs. The multi-device input analog signal is an output device 3. The microprocessor (MCU) configured to receive data from the analog-to-digital Converter input devices analog signals and record these data in remember is her device and with the ability to manage data retrieval from the storage device through the adapter to the external interface.

Thus, the microprocessor 13 of the device 2 is configured to receive data via the data input and storage device 14 is configured to store and parameter data movement and data biopotentials measured by the device 3.

The first, second and third acceleration sensors 6, 7 and 8 measure the components of the acceleration of the person along three mutually perpendicular axes. First, second and third measuring amplifiers 9, 10 and 11 are designed to reinforce and normalize the signals of the accelerometers.

Multi-channel analog-to-digital Converter 12 may be made on the basis of the temporary storage devices, a multiplexer and analog-to-digital Converter. In this case, the signals from the outputs of the amplifiers are received at the inputs of the temporary storage devices whose output multiplexer sequentially connects to the input of the analog-to-digital Converter. Analog-to-digital Converter converts serially for each channel.

The microcontroller 13 receives the data of the accelerometers in digital form. The microcontroller 13 is made with the possibility of pre-processing the received data. Pre-processing data of the accelerometers is their Messiah! or the filter, which can be a computation of average values for a specified number of times. The resulting processed data is recorded in long-term storage device 14. In long-term storage device 14 also records information about the current time received from the timer 16.

As a long-term storage device 14 may be used in the device non-volatile electroproportional memory (flash memory).

At the same time the device 3 measurement and recording of biopotentials writes in its storage device the data on the potentials of a person obtained on the basis of signals received from the fixed to the body of the electrodes.

At the end of the observation device 1 of the analysis, the data transmission of the acceleration of the person from the unit 2 measuring and recording the motion parameters on channel 4 data transfer and data on the measured bioelectric potentials of the device 3 measurement and recording of biopotentials on the second channel 5 data transfer.

The first and second channels 4 and 5, data transfer can be made in the form, for example, serial interfaces RS-232, RS-422, USB, or wireless data transmission channels Bluetooth, WLAN, etc.

As triaxial angular sensor 23 is higher speed can be used gyro.

As the computer 25 may be a standard computer connected to the connection device for displaying graphical information (output). The computer 25 is designed to receive the collected data transmitted on the first channel 4 data transfer.

WAGE 26 is a graphical display, which displays all the necessary data: graphs describing the action potentials, and graphs that describe the parameters of human motion. WAGE 26 may be made in the form of display on the basis of a cathode-ray tube or on the basis of the liquid crystal matrix. As WAGE 26 can also be used multimedia projector.

Pulse oximeter 18, the meter 19 blood pressure sensor 20 of the temperature sensor 21 of breath, meter 22 body resistance is made by the well-known schemes and contain on their outputs, analog-to-digital converters and corresponding adapters I / o, providing interfacing these devices with microcontroller 13. As analog-to-digital converters, pulse oxymeter 18 gauge 19 blood pressure sensor 20 of the temperature sensor 21 respiration meter 22 resistance can be used multi-channel analog-to-digital Converter 12.

System for assessment of functional state of the cardiovascular system is s works as follows.

When setting up the system is calibrating device 2 measuring and recording the motion parameters by known methods, for example, the device 2 or a separate unit of accelerometers (consisting of first, second and third acceleration sensors 6, 7 and 8) is placed on the calibration table. Then take readings of accelerometers for nine different positions of the calibration table. According to the data of these measurements is made, the system of equations, solving which are 9 elements of the matrix describing portugoal.net installation of accelerometers and three elements of rotation matrix calibration table, and for each accelerometer scale factor and the offset value of zero.

Before diagnosing the cardiovascular system unit 2 measuring and recording the motion parameters and the device 3 measurement and recording of biopotentials are fixed on the body. The electrode device 3 measurement and recording of biopotentials are fixed on the body in places determined by the type of the performed electrocardiographic studies.

Within a specified time write data on the potentials and data about the acceleration of the person, as well as data about the angular velocities obtained from triaxial sensor 23 angular velocity. After recording the data item is Reduta by the first and second channels 4 and 5 of the communication device 1 of the data analysis.

Analysis of data on the parameters of human motion is made, for example, as follows.

According to accelerometers based on the data obtained during calibration of the system, the system calculates the components of the vector of the apparent acceleration of bxbybzand the module apparent acceleration. Data accelerometers are specified by their complexation with known methods with the data of triaxial sensor 23 angular velocity.

The system calculates the vertical component of the acceleration relative to the earth coordinate system: aη=b-b1where b1- the value of the module of the vector of the apparent acceleration in the moment when the man to be alone (b1≈g, where g is the acceleration of free fall). Integrating the magnitude of the vertical component of acceleration aηget the values of the vertical velocity and displacement in a vertical plane.

The initial value of the module of the vector of the apparent acceleration of b1is calculated as the average of the averaging interval of the signals of the accelerometers. In addition, the error determination module of vertical vector acceleration compensated when using the method of least squares based on the fact that when at rest, the velocity and acceleration in the vertical plane (the first and second integrals on the size vertically the acceleration component and η) is equal to zero.

First, observations may be recorded readings of the accelerometers for a model of human movement, in particular, to:

- the state of rest;

- tilt up/down;

- squats;

- motion sat/stood/sat;

movement stood/sat/sat/lay on her side/lay/he turned on his back/lay;

- climbing stairs;

- descend the stairs;

- walking.

In the data analysis graphs of the variation of the smoothed components of the apparent acceleration of bxbybzmodule of the vector of the apparent acceleration of b, the vertical (in the earth coordinate system) speed and path are compared with the graphs for these values, obtained when a typical person's movements. This made identification of the movements made by man.

Graphics acceleration, speed and distance are displayed together with the schedules of biopotentials, and graphics combined in time. This allows you to compare data about physical activity with the parameters of functioning of the cardiovascular system.

In the proposed system (its variants) allows in addition to obtaining data on bioelectric potentials in the long-time monitoring and data movement characteristics of a person, i.e. his physical activity, which allows more accurate the assessment of the functional status of the cardiovascular system.

Introduction of pulse oximeter, measuring blood pressure, temperature sensor, respiration sensor, potentiometer body allows you to extend the functionality of the system and to improve the accuracy of diagnosis of the condition of the human body.

Thus, the proposed system to evaluate the functional state of the cardiovascular system provides the ability to compare data from the electrocardiogram data on physical activity in each moment of time.

Presents drawings and description make it possible to manufacture the system (variants) and a device for measuring and recording the motion parameters of the known components and used to diagnose cardiovascular system, define the parameters of human motion that characterizes the utility model as industrially applicable.

Sources of information

1. Mike Curtin. Sigma-delta techniques reduce hardware count and power consumption in biomedical analog front ends. Analog dialoge 28-2, 1994, pp.6-7.

2. RF patent №2138982, IPC And 61 In 5/02, publ. 10.10.1999.

1. System for assessment of functional state of the cardiovascular system containing the device measurement and recording of biopotentials, the device measures and records the motion parameters, which contains the first accelerometer, the second accelerometer, the third accelerom the Tr the first measuring amplifier, the second measuring amplifier, the third measuring amplifier, multi-channel analog-to-digital Converter, microcontroller, long-term storage device, the first adapter external interface, timer, data analysis, which contains the electronic computer, the device for displaying graphical information, the second adapter external interface, system interface line, the first, second and third accelerometers respectively through the first, second and third measuring amplifiers are connected to the inputs of the multi-channel analog-to-digital Converter that is connected to the microcontroller, the microcontroller is also connected to long-term storage device, adapter external interface and timer the input-output adapter external interface is an input / output external device interface measurement and recording of the motion parameters, the device of the measuring and recording of biopotentials connected via the second data channel to the data input device of measuring and recording the motion parameters formed by the input of the microcontroller, the first and second adapters external interface connected between a first data transmission channel, electronic computing machine and the second adapter is R external interface connected via the system interface trunk to electronic computing machine connected device for displaying graphical information.

2. System for assessment of functional state of the cardiovascular system according to claim 1, characterized in that it further comprises a three-axis angular rate sensor, which is connected through the block instrumentation amplifiers with multi-channel analog-to-digital Converter.

3. System for assessment of functional state of the cardiovascular system according to claim 2, characterized in that it further comprises a pulse oximeter, the output of which is connected to the microcontroller.

4. System for assessment of functional state of the cardiovascular system according to claim 2, characterized in that it further comprises a blood pressure meter, the output of which is connected to the microcontroller.

5. System for assessment of functional state of the cardiovascular system according to claim 2, characterized in that it further comprises a temperature sensor, the output of which is connected to the microcontroller.

6. System for assessment of functional state of the cardiovascular system according to claim 2, characterized in that it further comprises a respiration sensor, the output of which is connected to the microcontroller.

7. System for assessment of functional state of cardiovascular system of claim 2, otlichayushiesya, which further comprises measuring the resistance of the body, the output of which is connected to the microcontroller.



 

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4 cl, 2 dwg

FIELD: medicine; cardiology.

SUBSTANCE: method allows registering differential sphygmograms by means of computer and piezoelectric transducer providing high precision. Registration is carried out continuously and doesn't take much labor input. On the base of sphygmograms by using method of finding of "coding" points, two main characteristics of heart beat rate can be found by express analysis. Two main characteristics have to be rhythm and pulse oscillations of arterial pressure induced by periodical throwing of shock volume of blood into aorta. Algorithm of data processing which is developed on purpose, provides automatic placing of "coding" (received on the base of calculation) points onto averaged graph of cardiologic cycle that provides higher precision of determination of amplitude-time parameters at any recognized normal pulsation of selected fragment of pulsogram together with additional visual correction of localization of those points. Fragment of pulsogram with duration of no less than 2 minutes (standard duration equals to 5 minutes) is used for measuring and analyzing time factors which characterize rhythm of heart beating and its variability. After that the calibration factor is calculated to transfer conditional units of computer "digitization" into common units of measurement of blood arterial pressure (in mm of mercury column) and values of pulsation increase in blood arterial pressure in mm of mercury column are determined by integrating cardiologic cycles at selected fragment of pulsogram for corresponding areas. The meanings achieved are used for calculating all the amplitude-time cardiologic hemo-dynamic factors which depend on blood arterial pressure and which characterize systole of myocardium of left ventricle and elastic-resilient properties of walls of arterial channel. Continuous monitoring of changes in amplitude-time factors of pulsogram is provided as well as practically real time scale of getting of all the computational data and quick performance of all the mathematical transformations for making spectral analysis of variability of heart beat rate and selected amplitude-time cardiologic hemo-dynamic factors to determine their total and differential spectral power of oscillations. Results of static and spectral analysis of variability of measured parameters the functional condition and character of vegetative regulation of cardio-vascular system are estimated due to comparison of measured values with average statistical numerical values of the same factors which were specified for cardio-vascular system in relation to age, sex, state of health and signs for groups of people chosen as a test group.

EFFECT: improved precision; widened number of informative factors for estimation of cardio-vascular system.

8 dwg, 2 tbl

FIELD: medical equipment.

SUBSTANCE: device can be used in practical and sports medicine. Device has breath detector and pulse rate detector, clamp having ability of fastening to frame of glasses, joint mounted onto clamp, unit in form of clip for placing light source and photo-resistor which both are parts of pulse rate detector, and pipe. Breath thermal detector is mounted at one end of pipe. The pipe is mounted in clamp for displacement to control position of breath detector in projection of jet of breath-out air. Pulse rate detector is connected with joint through flexible wires. Wires of thermal detector are placed inside pipe. Pulse rate detector and breath detector are connected with corresponding amplifiers through joint. Output of any amplifier is connected with commutator.

EFFECT: simplified design; improved comfort for patient.

2 dwg

FIELD: medicine; medical engineering.

SUBSTANCE: method involves recording patient electrocardiogram in maximum comfort state in one lead and photopletysmogram. Vascular tone index (VTI) is measured as time interval from next in turn R-tooth peak to the next following pulse oscillation. Set of values is built and statistically processed. Mode value MoVTIR is calculated as patient rest state characteristic to estimate current functional state of patient regulation and control systems. Electrocardiogram in maximum comfort state is recorded in one lead and photopletysmogram at the same time. A set of RR-intervals and time intervals from next in turn R-tooth peak to the next following pulse oscillation is built and statistically processed. Amo, Mo and MoVTI values are calculated to estimate current functional state of patient. Neighboring cardio-interval values are additionally measured and mean square deviation MSDP is calculated and then variational pulse ametria SAT index is calculated from formula SAT=0.1 x Mo/MSDP and integral regulation and control system stress index of patient (IRCSS)is calculated from formula IRCSS=(SAT) x [1+(Movtir-MoVTI)MoVTI. Patient organism regulation and control system state is estimated as one corresponding to normative neuropsychic stress characteristic for rest state or when working without significant psychic tension with IRCSS value being within interval from 40 to 300, working neuropsychic stress characteristic for significant tension belonging interval from 300 to 900. Neuropsychic overstress showing necessity of rest belongs to an interval from 900 to 3000. Neuropsychic overstress threatening health belongs to an interval from 3000 to 10000. Attrition showing emergency of escaping from the current state with obligatory cardiologist advice takes place when the value is greater than 10000. The device has unit for recording electrocardiogram, data processing unit and calculation unit connected to estimation unit with its output and unit for recording pulse oscillations, analog-to-digital converter unit having inputs connected to electrocardiogram-recording unit and pulse oscillations-recording unit outputs and its output are connected to calculating unit inputs via the data processing unit, and display unit for showing patient regulation and control systems state. Units for processing and calculating are manufactured on microprocessor base. Signals are form on exit from the microprocessor, their values being corresponding to integral regulation and control system stress index value of a patient(IRCSS). The unit for recording pulse oscillations is designed as electronic transducer set on patient finger. The unit for recording electrocardiogram, records cardiac pulses in single lead.

EFFECT: high accuracy in estimating functional state of human organism regulation and control system.

3 cl, 2 dwg

FIELD: medicine.

SUBSTANCE: method involves recording peripheral differential upper extremity blood vessel rheogram and phonocardiogram in synchronous way. The second phonocardiogram beginning and the deepest rheogram points are detected. Pulse way propagation time reduction being found, arterial bloodstream tone growth conclusions are drawn.

EFFECT: high reliability of the results.

18 dwg, 3 tbl

FIELD: medicine, anesthesiology-resuscitation, traumatology, surgery.

SUBSTANCE: according to 4-point scale one should evaluate the state of 10 clinical, hemodynamic and instrumental values in patients: patient's skin by detecting its color and moisture; hemodynamic values: heart rate, systolic arterial pressure, central venous pressure, shock index; central nervous system by studying the value of Glasgow scale; respiratory system - the frequency of respiratory movements and blood saturation; cardio-vascular system - myocardial necessity in oxygen. Each value has its own point, moreover, 0 points corresponds to that fact that the index under inspection is within age standard, 1 point - when physiological parameters at rest are different against the standard, but their functions are compensated by organs of one or two systems, 2 points - compensation is kept due to alterations in more than 2 systems and it reaches its peak, 3 points correspond to adaptation failure or affected function of one or several systems, and the sum of points being 0-4 in patients one should diagnose the absence of hemorrhagic shock, at 5-9 points - the severity of hemorrhagic shock corresponds to degree I, at 10-19 points - to degree II, at 20 points and more - to degree III.

EFFECT: higher efficiency and accuracy of diagnostics.

4 ex, 1 tbl

FIELD: medicine.

SUBSTANCE: method involves measuring cardio- and hemodynamic values, calculating estimates of the values and displaying the estimates on monitor. Measuring and calculating each cardio- and hemodynamic value is carried out during basic periods of their oscillations corresponding to heart contraction cycle and respiratory cycle related to absolute time.

EFFECT: high accuracy of estimation.

4 dwg, 1 tbl

FIELD: medicine.

SUBSTANCE: method involves recording electrocardiogram and cardiorhythmogram on the background of medicamentous therapy beginning from 7-10 day of the disease. The cardiorhythmogram is shown to the patient. Respiratory training session is carried out. Inspiration and expiration are to be equal in duration, each making Ѕ of cardiorhythmogram breathing wave.

EFFECT: enhanced effectiveness of treatment.

2 cl, 3 tbl

FIELD: medical engineering.

SUBSTANCE: selected reference point in every cardiac cycle on TP-segment. Values of neighboring N=2n+1 reference points also belonging to TP-segment are recorded, n=1,2,…, beginning from the first reference point. Other reference points are set to zero. The central reference point value is left without changes in a group of 2n+1 member. Reference point values of each of n pairs of reference points symmetrically arranged relative to the central reference point are scaled relative to condition Uj=U0Kj, where U0 is the central reference point amplitude, Uj is amplitude of j-th reference point pair, j=1,2,…,n is the number of each reference point pair relative to the central reference point, Kj is the scaling coefficients determined from received signal suppression condition of the first n spectral zones in spectrum. The so formed electrocardiogram signal reference point groups sequence is let pass through lower frequency filter with isoline drift signal being obtained being produced on output. The signal is amplified and subtracted from the initial electrocardiogram signal that is preliminarily delayed for lower frequency filter delay time. Device has the first lower frequency filter, discretization unit and unit for selecting anchor reference points connected in series, as well as subtraction unit, unit for saving N reference points, scaling unit, the second lower frequency filter, amplifier and delay unit. Output of the unit for selecting anchor reference points is connected to the first input of memory unit the second input of which is connected to discretization unit output. Each of N memory unit outputs is connected to one of N inputs of scaling units. Scaling unit output is connected to the second lower frequency filter input which output is connected to amplifier input. Amplifier output is connected to the first input of subtraction unit, the second output of subtraction unit is connected to delay unit output. Its input is connected to output of the first lower frequency filter. Subtraction unit output is the device output.

EFFECT: reliable removal of isoline drift.

2 cl, 8 dwg

FIELD: medicine, anesthesiology-resuscitation, traumatology, surgery.

SUBSTANCE: according to 4-point scale one should evaluate the state of 10 clinical, hemodynamic and instrumental values in patients: patient's skin by detecting its color and moisture; hemodynamic values: heart rate, systolic arterial pressure, central venous pressure, shock index; central nervous system by studying the value of Glasgow scale; respiratory system - the frequency of respiratory movements and blood saturation; cardio-vascular system - myocardial necessity in oxygen. Each value has its own point, moreover, 0 points corresponds to that fact that the index under inspection is within age standard, 1 point - when physiological parameters at rest are different against the standard, but their functions are compensated by organs of one or two systems, 2 points - compensation is kept due to alterations in more than 2 systems and it reaches its peak, 3 points correspond to adaptation failure or affected function of one or several systems, and the sum of points being 0-4 in patients one should diagnose the absence of hemorrhagic shock, at 5-9 points - the severity of hemorrhagic shock corresponds to degree I, at 10-19 points - to degree II, at 20 points and more - to degree III.

EFFECT: higher efficiency and accuracy of diagnostics.

4 ex, 1 tbl

FIELD: medicine.

SUBSTANCE: method involves recording peripheral differential upper extremity blood vessel rheogram and phonocardiogram in synchronous way. The second phonocardiogram beginning and the deepest rheogram points are detected. Pulse way propagation time reduction being found, arterial bloodstream tone growth conclusions are drawn.

EFFECT: high reliability of the results.

18 dwg, 3 tbl

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