What is inside the electrocardiograph?

Journal of Electrocardiology
Richard E GreggKaren K Giuliano

Abstract

The details of digital recording and computer processing of a 12-lead electrocardiogram (ECG) remain a source of confusion for many health care professionals. A better understanding of the design and performance tradeoffs inherent in the electrocardiograph design might lead to better quality in ECG recording and better interpretation in ECG reading. This paper serves as a tutorial from an engineering point of view to those who are new to the field of ECG and to those clinicians who want to gain a better understanding of the engineering tradeoffs involved. The problem arises when the benefit of various electrocardiograph features is widely understood while the cost or the tradeoffs are not equally well understood. An electrocardiograph is divided into 2 main components, the patient module for ECG signal acquisition and the remainder for ECG processing which holds the main processor, fast printer, and display. The low-level ECG signal from the body is amplified and converted to a digital signal for further computer processing. The Electrocardiogram is processed for display by user selectable filters to reduce various artifacts. A high-pass filter is used to attenuate the very low frequency baseline sway or wander. A low-pass filt...Continue Reading

Citations

Mar 2, 2011·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Bharat K Kantharia
Jul 11, 2012·ISRN Cardiology·F Buendía-FuentesM A Palencia-Pérez
Nov 23, 2012·Biomedical Instrumentation & Technology·Luis A Melendez, Richard M Pino
Oct 7, 2009·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Javier García-NieblaAntonio Bayés de Luna
Feb 18, 2015·Computational and Mathematical Methods in Medicine·Haemwaan Sivaraks, Chotirat Ann Ratanamahatana
Mar 23, 2017·Circulation·Andrei D Mărgulescu
Apr 22, 2010·Circulation. Arrhythmia and Electrophysiology·Jacques M T de Bakker, Fred H M Wittkampf
Jul 2, 2020·American Journal of Critical Care : an Official Publication, American Association of Critical-Care Nurses·Karen K Giuliano
Jun 12, 2019·Pediatrics International : Official Journal of the Japan Pediatric Society·Masashi TaniguchiMuneyuki Takeuchi
Jun 27, 2019·British Journal of Nursing : BJN·Stephen McStay
Sep 3, 2021·Journal of Electrocardiology·Yu-He Zhang, Saeed Babaeizadeh

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