Automatic recognition of uterine contractions with electrohysterogram signals based on the zero-crossing rate

Abstract Uterine contraction (UC) is an essential clinical indicator in the progress of labour and delivery. Electrohysterogram (EHG) signals recorded on the abdomen of pregnant women reflect the uterine electrical activity. This study proposes a novel algorithm for automatic recognition of UCs with...

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Autores principales:	Xiaoxiao Song, Xiangyun Qiao, Dongmei Hao, Lin Yang, Xiya Zhou, Yuhang Xu, Dingchang Zheng
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/824874a1c6cd467d841aa95d38fa1a1d
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spelling	oai:doaj.org-article:824874a1c6cd467d841aa95d38fa1a1d2021-12-02T13:51:15ZAutomatic recognition of uterine contractions with electrohysterogram signals based on the zero-crossing rate10.1038/s41598-021-81492-12045-2322https://doaj.org/article/824874a1c6cd467d841aa95d38fa1a1d2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81492-1https://doaj.org/toc/2045-2322Abstract Uterine contraction (UC) is an essential clinical indicator in the progress of labour and delivery. Electrohysterogram (EHG) signals recorded on the abdomen of pregnant women reflect the uterine electrical activity. This study proposes a novel algorithm for automatic recognition of UCs with EHG signals to improve the accuracy of detecting UCs. EHG signals by electrodes, the tension of the abdominal wall by tocodynamometry (TOCO) and maternal perception were recorded simultaneously in 54 pregnant women. The zero-crossing rate (ZCR) of the EHG signal and its power were calculated to modulate the raw EHG signal and highlight the EHG bursts. Then the envelope was extracted from the modulated EHG for UC recognition. Besides, UC was also detected by the conventional TOCO signal. Taking maternal perception as a reference, the UCs recognized by EHG and TOCO were evaluated with the sensitivity, positive predictive value (PPV), and UC parameters. The results show that the sensitivity and PPV are 87.8% and 93.18% for EHG, and 84.04% and 90.89% for TOCO. EHG detected a larger number of UCs than TOCO, which is closer to maternal perception. The duration and frequency of UC obtained from EHG and TOCO were not significantly different (p > 0.05). In conclusion, the proposed UC recognition algorithm has high accuracy and simple calculation which could be used for real-time analysis of EHG signals and long-term monitoring of UCs.Xiaoxiao SongXiangyun QiaoDongmei HaoLin YangXiya ZhouYuhang XuDingchang ZhengNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xiaoxiao Song Xiangyun Qiao Dongmei Hao Lin Yang Xiya Zhou Yuhang Xu Dingchang Zheng Automatic recognition of uterine contractions with electrohysterogram signals based on the zero-crossing rate
description	Abstract Uterine contraction (UC) is an essential clinical indicator in the progress of labour and delivery. Electrohysterogram (EHG) signals recorded on the abdomen of pregnant women reflect the uterine electrical activity. This study proposes a novel algorithm for automatic recognition of UCs with EHG signals to improve the accuracy of detecting UCs. EHG signals by electrodes, the tension of the abdominal wall by tocodynamometry (TOCO) and maternal perception were recorded simultaneously in 54 pregnant women. The zero-crossing rate (ZCR) of the EHG signal and its power were calculated to modulate the raw EHG signal and highlight the EHG bursts. Then the envelope was extracted from the modulated EHG for UC recognition. Besides, UC was also detected by the conventional TOCO signal. Taking maternal perception as a reference, the UCs recognized by EHG and TOCO were evaluated with the sensitivity, positive predictive value (PPV), and UC parameters. The results show that the sensitivity and PPV are 87.8% and 93.18% for EHG, and 84.04% and 90.89% for TOCO. EHG detected a larger number of UCs than TOCO, which is closer to maternal perception. The duration and frequency of UC obtained from EHG and TOCO were not significantly different (p > 0.05). In conclusion, the proposed UC recognition algorithm has high accuracy and simple calculation which could be used for real-time analysis of EHG signals and long-term monitoring of UCs.
format	article
author	Xiaoxiao Song Xiangyun Qiao Dongmei Hao Lin Yang Xiya Zhou Yuhang Xu Dingchang Zheng
author_facet	Xiaoxiao Song Xiangyun Qiao Dongmei Hao Lin Yang Xiya Zhou Yuhang Xu Dingchang Zheng
author_sort	Xiaoxiao Song
title	Automatic recognition of uterine contractions with electrohysterogram signals based on the zero-crossing rate
title_short	Automatic recognition of uterine contractions with electrohysterogram signals based on the zero-crossing rate
title_full	Automatic recognition of uterine contractions with electrohysterogram signals based on the zero-crossing rate
title_fullStr	Automatic recognition of uterine contractions with electrohysterogram signals based on the zero-crossing rate
title_full_unstemmed	Automatic recognition of uterine contractions with electrohysterogram signals based on the zero-crossing rate
title_sort	automatic recognition of uterine contractions with electrohysterogram signals based on the zero-crossing rate
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/824874a1c6cd467d841aa95d38fa1a1d
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Automatic recognition of uterine contractions with electrohysterogram signals based on the zero-crossing rate

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