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Parameter variations in personalized electrophysiological models of human heart ventricles
The objectives of this study were to evaluate the accuracy of personalized numerical simulations of the electrical activity in human ventricles by comparing simulated electrocardiograms (ECGs) with real patients’ ECGs and analyzing the sensitivity of the model output to variations in the model param...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8081243/ https://www.ncbi.nlm.nih.gov/pubmed/33909606 http://dx.doi.org/10.1371/journal.pone.0249062 |
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author | Ushenin, Konstantin Kalinin, Vitaly Gitinova, Sukaynat Sopov, Oleg Solovyova, Olga |
author_facet | Ushenin, Konstantin Kalinin, Vitaly Gitinova, Sukaynat Sopov, Oleg Solovyova, Olga |
author_sort | Ushenin, Konstantin |
collection | PubMed |
description | The objectives of this study were to evaluate the accuracy of personalized numerical simulations of the electrical activity in human ventricles by comparing simulated electrocardiograms (ECGs) with real patients’ ECGs and analyzing the sensitivity of the model output to variations in the model parameters. We used standard 12-lead ECGs and up to 224 unipolar body-surface ECGs to record three patients with cardiac resynchronization therapy devices and three patients with focal ventricular tachycardia. Patient-tailored geometrical models of the ventricles, atria, large vessels, liver, and spine were created using computed tomography data. Ten cases of focal ventricular activation were simulated using the bidomain model and the TNNP 2006 cellular model. The population-based values of electrical conductivities and other model parameters were used for accuracy analysis, and their variations were used for sensitivity analysis. The mean correlation coefficient between the simulated and real ECGs varied significantly (from r = 0.29 to r = 0.86) among the simulated cases. A strong mean correlation (r > 0.7) was found in eight of the ten model cases. The accuracy of the ECG simulation varied widely in the same patient depending on the localization of the excitation origin. The sensitivity analysis revealed that variations in the anisotropy ratio, blood conductivity, and cellular apicobasal heterogeneity had the strongest influence on transmembrane potential, while variation in lung conductivity had the greatest influence on body-surface ECGs. Futhermore, the anisotropy ratio predominantly affected the latest activation time and repolarization time dispersion, while the cellular apicobasal heterogeneity mainly affected the dispersion of action potential duration, and variation in lung conductivity mainly led to changes in the amplitudes of ECGs and cardiac electrograms. We also found that the effects of certain parameter variations had specific regional patterns on the cardiac and body surfaces. These observations are useful for further developing personalized cardiac models. |
format | Online Article Text |
id | pubmed-8081243 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-80812432021-05-06 Parameter variations in personalized electrophysiological models of human heart ventricles Ushenin, Konstantin Kalinin, Vitaly Gitinova, Sukaynat Sopov, Oleg Solovyova, Olga PLoS One Research Article The objectives of this study were to evaluate the accuracy of personalized numerical simulations of the electrical activity in human ventricles by comparing simulated electrocardiograms (ECGs) with real patients’ ECGs and analyzing the sensitivity of the model output to variations in the model parameters. We used standard 12-lead ECGs and up to 224 unipolar body-surface ECGs to record three patients with cardiac resynchronization therapy devices and three patients with focal ventricular tachycardia. Patient-tailored geometrical models of the ventricles, atria, large vessels, liver, and spine were created using computed tomography data. Ten cases of focal ventricular activation were simulated using the bidomain model and the TNNP 2006 cellular model. The population-based values of electrical conductivities and other model parameters were used for accuracy analysis, and their variations were used for sensitivity analysis. The mean correlation coefficient between the simulated and real ECGs varied significantly (from r = 0.29 to r = 0.86) among the simulated cases. A strong mean correlation (r > 0.7) was found in eight of the ten model cases. The accuracy of the ECG simulation varied widely in the same patient depending on the localization of the excitation origin. The sensitivity analysis revealed that variations in the anisotropy ratio, blood conductivity, and cellular apicobasal heterogeneity had the strongest influence on transmembrane potential, while variation in lung conductivity had the greatest influence on body-surface ECGs. Futhermore, the anisotropy ratio predominantly affected the latest activation time and repolarization time dispersion, while the cellular apicobasal heterogeneity mainly affected the dispersion of action potential duration, and variation in lung conductivity mainly led to changes in the amplitudes of ECGs and cardiac electrograms. We also found that the effects of certain parameter variations had specific regional patterns on the cardiac and body surfaces. These observations are useful for further developing personalized cardiac models. Public Library of Science 2021-04-28 /pmc/articles/PMC8081243/ /pubmed/33909606 http://dx.doi.org/10.1371/journal.pone.0249062 Text en © 2021 Ushenin et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Ushenin, Konstantin Kalinin, Vitaly Gitinova, Sukaynat Sopov, Oleg Solovyova, Olga Parameter variations in personalized electrophysiological models of human heart ventricles |
title | Parameter variations in personalized electrophysiological models of human heart ventricles |
title_full | Parameter variations in personalized electrophysiological models of human heart ventricles |
title_fullStr | Parameter variations in personalized electrophysiological models of human heart ventricles |
title_full_unstemmed | Parameter variations in personalized electrophysiological models of human heart ventricles |
title_short | Parameter variations in personalized electrophysiological models of human heart ventricles |
title_sort | parameter variations in personalized electrophysiological models of human heart ventricles |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8081243/ https://www.ncbi.nlm.nih.gov/pubmed/33909606 http://dx.doi.org/10.1371/journal.pone.0249062 |
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