Electrodes in external electrohysterography: a systematic literature review.
Delivery
Electrodes
Electrohysterography
Labour
Recording
Journal
Biophysical reviews
ISSN: 1867-2450
Titre abrégé: Biophys Rev
Pays: Germany
ID NLM: 101498573
Informations de publication
Date de publication:
Jun 2021
Jun 2021
Historique:
received:
22
03
2021
accepted:
04
05
2021
entrez:
28
6
2021
pubmed:
29
6
2021
medline:
29
6
2021
Statut:
epublish
Résumé
In low-income countries, pregnant women do not have easy access to health care, especially in rural and peri-urban areas. In this context, they can be surprised by the uterine contractions that precede childbirth and sometimes find themselves giving birth at home or on the way to the nearest health facility (located miles away from their home). In view of the development of an external uterine electrohysterogram acquisition system for labour prediction, a review of the literature on electrodes and their characteristics is necessary. A comprehensive literature review was conducted to collate information on the use of electrodes in external EHG recording and their characteristics. Wet electrodes based on Ag/AgCl redox chemistry are the most common type of electrodes for EHG, employed in different configurations on the pregnant woman's abdomen. All positioning configurations are around the vertical median axis if they are not placed directly on it. Positioning below the navel seems to be the most efficient. The number of source, reference, and ground electrodes used varies from one author to another, as does the distance between the electrodes. Two well-positioned source electrodes on the vertical median axis, with ground electrode on the right side of the hip and reference one on the left side, are able to generate a good external EHG recording signal. The minimum allowed inter-electrode distance is approximately 17.5 to 25mm.
Sections du résumé
BACKGROUND
BACKGROUND
In low-income countries, pregnant women do not have easy access to health care, especially in rural and peri-urban areas. In this context, they can be surprised by the uterine contractions that precede childbirth and sometimes find themselves giving birth at home or on the way to the nearest health facility (located miles away from their home). In view of the development of an external uterine electrohysterogram acquisition system for labour prediction, a review of the literature on electrodes and their characteristics is necessary.
METHODS
METHODS
A comprehensive literature review was conducted to collate information on the use of electrodes in external EHG recording and their characteristics.
RESULTS
RESULTS
Wet electrodes based on Ag/AgCl redox chemistry are the most common type of electrodes for EHG, employed in different configurations on the pregnant woman's abdomen. All positioning configurations are around the vertical median axis if they are not placed directly on it. Positioning below the navel seems to be the most efficient. The number of source, reference, and ground electrodes used varies from one author to another, as does the distance between the electrodes.
CONCLUSION
CONCLUSIONS
Two well-positioned source electrodes on the vertical median axis, with ground electrode on the right side of the hip and reference one on the left side, are able to generate a good external EHG recording signal. The minimum allowed inter-electrode distance is approximately 17.5 to 25mm.
Identifiants
pubmed: 34178173
doi: 10.1007/s12551-021-00805-w
pii: 805
pmc: PMC8214640
doi:
Types de publication
Journal Article
Review
Langues
eng
Pagination
405-415Informations de copyright
© International Union for Pure and Applied Biophysics (IUPAB) and Springer-Verlag GmbH Germany, part of Springer Nature 2021.
Déclaration de conflit d'intérêts
Conflict of interestThe authors declare no conflict of interest.
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