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A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling

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Bibliographic Details
Title: A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling
Authors: Şan, Müfit, Batista, Arnaldo, Russo, Sara, Esgalhado, Filipa, Dos Reis, Catarina R. Palma, Serrano, Fátima, Ortigueira, Manuel
Contributors: CTS - Centro de Tecnologia e Sistemas, UNINOVA-Instituto de Desenvolvimento de Novas Tecnologias, DF – Departamento de Física, NOVA Medical School|Faculdade de Ciências Médicas (NMS|FCM)
Publication Year: 2022
Collection: Repositório da Universidade Nova de Lisboa (UNL)
Subject Terms: Cole-impedance model, Fractional calculus, Transfer function modelling, Uterine electromyography, Analytical Chemistry, Information Systems, Atomic and Molecular Physics, and Optics, Biochemistry, Instrumentation, Electrical and Electronic Engineering
Description: Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. ; 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. ; publishersversion ; published
Document Type: article in journal/newspaper
Language: English
Relation: Funding Information: info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00066%2F2020/PT; Şan, M., Batista, A., Russo, S., Esgalhado, F., Dos Reis, C. R. P., Serrano, F., & Ortigueira, M. (2022). A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling. Sensors, 22(5), Article 1704. https://doi.org/10.3390/s22051704; PURE: 42109269; Scopus: 85125093389; WOS: 000771519800001; https://hdl.handle.net/10362/134193; https://doi.org/10.3390/s22051704
DOI: 10.3390/s22051704
Availability: https://hdl.handle.net/10362/134193
https://doi.org/10.3390/s22051704
Rights: openAccess
Accession Number: edsbas.D5193F73
Database: BASE
Description
Abstract:Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. ; 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. ; publishersversion ; published
DOI:10.3390/s22051704