L.F. Vaskovskaya1, A.V. Hardziyevich1,2, P.V. Kamlach3
1 Open Joint Stock Company «AGAT – Control Systems» – Managing Company of «Geoinformation Control Systems» Holding
2,3 Belarusian State University of Informatics and Radioelectronics (Minsk, Belarus)
One of the most important parts in collecting data about the patient's heart health is taking and analyzing the electrocardiogram (ECG). The main problem of the electrographic method of the cardio disease diagnosis is that the available ECG equipment and traditional methods of electrocardiogram analysis do not always allow diagnosing the cardiac diseases with high reliability and accuracy. In many cases, the accuracy of the diagnosis depends on the experience and classification level of the physician. It is necessary to automate data acquisition and analysis of ECG, as well as to find methods that would be able to recognize the most characteristic ECG diseases parameters to exclude the "human factor" and improve the quality of the diagnosis by using electrocardiograms. At the present stage, these problems can be solved due to the usage of microprocessor devices, personal computers (PC), and high-speed reliable means of communication. The introduction of such devices in medical technology makes it possible to collect large amounts of data automatically, to carry out their complex mathematical processing and to bring them in a timely manner to qualified medical personnel. Such devices make it possible to present the necessary amount of information of different complexity visually, completeness and detail in a convenient form to experts, which is a prerequisite for prompt and correct diagnosis of diseases. The purpose of this work is to develop a multi-channel electrocardiograph device that extends the list and application range of its tasks and improves diagnostic quality by use of modern technologies and equipment,
The developed multichannel electrocardiograph is described in this article. The electrocardiograph device includes standard hardware modules and personal computer (PC) with the special software and wireless communication Bluetooth module to provide remote access to ECG data, facilities for communication with the Ethernet.
The developed multichannel electrocardiograph device is intended for receiving, processing and long-term electronic storage of bioelectrical potentials of the patient's heart in PC and taken simultaneously in 12 standard leads. The usage of the electrocardiograph PC will help the medical staff with the ECG construction and analysis in the process of taking signals from a patient, as well as when the recording of the authorized information is over. Due to the introduced communication facilities, the work can be carried out in close locality to a patient, and remotely determined by the specifications of the means of communication. It is possible for medical staff to monitor different information leas on the display screen such as (signals received from lead electrodes, build up after processing of one or several cardiogram by means of filters, assessed diagrams of set parameters, referring to analysis results of generalized statistic values and results of long-term monitorings.
The PC software collects signals (after digital conversion) from sensors, noise and gems filtering, makes data recording (saved in a software form), replay, displaying on a monitor screen, in a paper-based media ECG information, provides the ability to save and transmitting ECG data on electronic media, provides data delivery to remote users via wireless or Ethernet local network in real time and after recording the signals. The specified data can be collected, stored and presented to a large number of patients and medical professionals.
The article explains the necessity of using different filtering methods for cardiogram processing: median filter, Savitsky–Goley filter and Chebyshev filter. Examples of practical usage of the filters with different tuning parameters are shown hereinafter.
The Performed development of electrocardiograph device expands the set and quality of the performed functions, construction, analysis and study of cardiograms. It provides the efficient increase of the cardiography in diagnosis and search of ways for heart diseases treatment. The proposed technical means, methods of filtering, visual presentation of information to medical staff can be applied successfully in treatment of patients bearing other diseases. Therefore, the proposed approach and equipment for ECG data acquisition and processing are relevant for solving a wide range of medicine problems.
Vaskovskaya L.F., Hardziyevich A.V., Kamlach P.V. Multichannel electrocardiograph with filtration of electrocardiograms by the methods of median, Savitsky–Golay and Chebyshev. Information-measuring and Control Systems. 2021. V. 19. № 6. P. 45−54. DOI: https://doi.org/10.18127/j20700814-202106-05 (in Russian)
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