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Comparison of Baseline Wander Removal Techniques considering the Preservation of ST Changes in the Ischemic ECG: A Simulation Study

The most important ECG marker for the diagnosis of ischemia or infarction is a change in the ST segment. Baseline wander is a typical artifact that corrupts the recorded ECG and can hinder the correct diagnosis of such diseases. For the purpose of finding the best suited filter for the removal of ba...

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Autores principales: Lenis, Gustavo, Pilia, Nicolas, Loewe, Axel, Schulze, Walther H. W., Dössel, Olaf
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5361052/
https://www.ncbi.nlm.nih.gov/pubmed/28373893
http://dx.doi.org/10.1155/2017/9295029
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author Lenis, Gustavo
Pilia, Nicolas
Loewe, Axel
Schulze, Walther H. W.
Dössel, Olaf
author_facet Lenis, Gustavo
Pilia, Nicolas
Loewe, Axel
Schulze, Walther H. W.
Dössel, Olaf
author_sort Lenis, Gustavo
collection PubMed
description The most important ECG marker for the diagnosis of ischemia or infarction is a change in the ST segment. Baseline wander is a typical artifact that corrupts the recorded ECG and can hinder the correct diagnosis of such diseases. For the purpose of finding the best suited filter for the removal of baseline wander, the ground truth about the ST change prior to the corrupting artifact and the subsequent filtering process is needed. In order to create the desired reference, we used a large simulation study that allowed us to represent the ischemic heart at a multiscale level from the cardiac myocyte to the surface ECG. We also created a realistic model of baseline wander to evaluate five filtering techniques commonly used in literature. In the simulation study, we included a total of 5.5 million signals coming from 765 electrophysiological setups. We found that the best performing method was the wavelet-based baseline cancellation. However, for medical applications, the Butterworth high-pass filter is the better choice because it is computationally cheap and almost as accurate. Even though all methods modify the ST segment up to some extent, they were all proved to be better than leaving baseline wander unfiltered.
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spelling pubmed-53610522017-04-03 Comparison of Baseline Wander Removal Techniques considering the Preservation of ST Changes in the Ischemic ECG: A Simulation Study Lenis, Gustavo Pilia, Nicolas Loewe, Axel Schulze, Walther H. W. Dössel, Olaf Comput Math Methods Med Research Article The most important ECG marker for the diagnosis of ischemia or infarction is a change in the ST segment. Baseline wander is a typical artifact that corrupts the recorded ECG and can hinder the correct diagnosis of such diseases. For the purpose of finding the best suited filter for the removal of baseline wander, the ground truth about the ST change prior to the corrupting artifact and the subsequent filtering process is needed. In order to create the desired reference, we used a large simulation study that allowed us to represent the ischemic heart at a multiscale level from the cardiac myocyte to the surface ECG. We also created a realistic model of baseline wander to evaluate five filtering techniques commonly used in literature. In the simulation study, we included a total of 5.5 million signals coming from 765 electrophysiological setups. We found that the best performing method was the wavelet-based baseline cancellation. However, for medical applications, the Butterworth high-pass filter is the better choice because it is computationally cheap and almost as accurate. Even though all methods modify the ST segment up to some extent, they were all proved to be better than leaving baseline wander unfiltered. Hindawi 2017 2017-03-08 /pmc/articles/PMC5361052/ /pubmed/28373893 http://dx.doi.org/10.1155/2017/9295029 Text en Copyright © 2017 Gustavo Lenis et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Lenis, Gustavo
Pilia, Nicolas
Loewe, Axel
Schulze, Walther H. W.
Dössel, Olaf
Comparison of Baseline Wander Removal Techniques considering the Preservation of ST Changes in the Ischemic ECG: A Simulation Study
title Comparison of Baseline Wander Removal Techniques considering the Preservation of ST Changes in the Ischemic ECG: A Simulation Study
title_full Comparison of Baseline Wander Removal Techniques considering the Preservation of ST Changes in the Ischemic ECG: A Simulation Study
title_fullStr Comparison of Baseline Wander Removal Techniques considering the Preservation of ST Changes in the Ischemic ECG: A Simulation Study
title_full_unstemmed Comparison of Baseline Wander Removal Techniques considering the Preservation of ST Changes in the Ischemic ECG: A Simulation Study
title_short Comparison of Baseline Wander Removal Techniques considering the Preservation of ST Changes in the Ischemic ECG: A Simulation Study
title_sort comparison of baseline wander removal techniques considering the preservation of st changes in the ischemic ecg: a simulation study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5361052/
https://www.ncbi.nlm.nih.gov/pubmed/28373893
http://dx.doi.org/10.1155/2017/9295029
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