A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.17/4032 |
Resumo: | The uterine electromyogram, also called electrohysterogram (EHG), is the electrical signal generated by uterine contractile activity. The EHG has been considered an expanding technique for pregnancy monitoring and preterm risk evaluation. Data were collected on the abdominal surface. It has been speculated the effect of the placenta location on the characteristics of the EHG. In this work, a preliminary exploration method is proposed using the average spectra of Alvarez waves contractions of subjects with anterior and non-anterior placental position as a basis for the triple-dispersion Cole model that provides a best fit for these two cases. This leads to the uterine impedance estimation for these two study cases. Non-linear least square fitting (NLSF) was applied for this modelling process, which produces electric circuit fractional models' representations. A triple-dispersion Cole-impedance model was used to obtain the uterine impedance curve in a frequency band between 0.1 and 1 Hz. A proposal for the interpretation relating the model parameters and the placental influence on the myometrial contractile action is provided. This is the first report regarding in silico estimation of the uterine impedance for cases involving anterior or non-anterior placental positions. |
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A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional ModellingMAC MED MAFFemaleHumansElectromyography / methodsPlacentaPregnancyInfant, NewbornUterusUterine Contraction*The uterine electromyogram, also called electrohysterogram (EHG), is the electrical signal generated by uterine contractile activity. The EHG has been considered an expanding technique for pregnancy monitoring and preterm risk evaluation. Data were collected on the abdominal surface. It has been speculated the effect of the placenta location on the characteristics of the EHG. In this work, a preliminary exploration method is proposed using the average spectra of Alvarez waves contractions of subjects with anterior and non-anterior placental position as a basis for the triple-dispersion Cole model that provides a best fit for these two cases. This leads to the uterine impedance estimation for these two study cases. Non-linear least square fitting (NLSF) was applied for this modelling process, which produces electric circuit fractional models' representations. A triple-dispersion Cole-impedance model was used to obtain the uterine impedance curve in a frequency band between 0.1 and 1 Hz. A proposal for the interpretation relating the model parameters and the placental influence on the myometrial contractile action is provided. This is the first report regarding in silico estimation of the uterine impedance for cases involving anterior or non-anterior placental positions.MDPIRepositório do Centro Hospitalar Universitário de Lisboa Central, EPEŞan, MBatista, ARusso, SEsgalhado, FPalma dos Reis, CSerrano, FOrtigueira, M2022-04-06T10:40:02Z20222022-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.17/4032engSensors (Basel). 2022 Feb 22;22(5):1704.10.3390/s22051704.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-10T09:45:00Zoai:repositorio.chlc.min-saude.pt:10400.17/4032Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:21:20.386292Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling |
title |
A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling |
spellingShingle |
A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling Şan, M MAC MED MAF Female Humans Electromyography / methods Placenta Pregnancy Infant, Newborn Uterus Uterine Contraction* |
title_short |
A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling |
title_full |
A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling |
title_fullStr |
A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling |
title_full_unstemmed |
A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling |
title_sort |
A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling |
author |
Şan, M |
author_facet |
Şan, M Batista, A Russo, S Esgalhado, F Palma dos Reis, C Serrano, F Ortigueira, M |
author_role |
author |
author2 |
Batista, A Russo, S Esgalhado, F Palma dos Reis, C Serrano, F Ortigueira, M |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório do Centro Hospitalar Universitário de Lisboa Central, EPE |
dc.contributor.author.fl_str_mv |
Şan, M Batista, A Russo, S Esgalhado, F Palma dos Reis, C Serrano, F Ortigueira, M |
dc.subject.por.fl_str_mv |
MAC MED MAF Female Humans Electromyography / methods Placenta Pregnancy Infant, Newborn Uterus Uterine Contraction* |
topic |
MAC MED MAF Female Humans Electromyography / methods Placenta Pregnancy Infant, Newborn Uterus Uterine Contraction* |
description |
The uterine electromyogram, also called electrohysterogram (EHG), is the electrical signal generated by uterine contractile activity. The EHG has been considered an expanding technique for pregnancy monitoring and preterm risk evaluation. Data were collected on the abdominal surface. It has been speculated the effect of the placenta location on the characteristics of the EHG. In this work, a preliminary exploration method is proposed using the average spectra of Alvarez waves contractions of subjects with anterior and non-anterior placental position as a basis for the triple-dispersion Cole model that provides a best fit for these two cases. This leads to the uterine impedance estimation for these two study cases. Non-linear least square fitting (NLSF) was applied for this modelling process, which produces electric circuit fractional models' representations. A triple-dispersion Cole-impedance model was used to obtain the uterine impedance curve in a frequency band between 0.1 and 1 Hz. A proposal for the interpretation relating the model parameters and the placental influence on the myometrial contractile action is provided. This is the first report regarding in silico estimation of the uterine impedance for cases involving anterior or non-anterior placental positions. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-06T10:40:02Z 2022 2022-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.17/4032 |
url |
http://hdl.handle.net/10400.17/4032 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Sensors (Basel). 2022 Feb 22;22(5):1704. 10.3390/s22051704. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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