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. 2015 Apr 28:2:150017.
doi: 10.1038/sdata.2015.17. eCollection 2015.

The Icelandic 16-electrode electrohysterogram database

Asgeir Alexandersson  1 , Thora Steingrimsdottir  2 , Jeremy Terrien  3 , Catherine Marque  3 , Brynjar Karlsson  1
Affiliations

The Icelandic 16-electrode electrohysterogram database

Asgeir Alexandersson et al. Sci Data. .

Abstract

External recordings of the electrohysterogram (EHG) can provide new knowledge on uterine electrical activity associated with contractions. Better understanding of the mechanisms underlying labor can contribute to preventing preterm birth which is the main cause of mortality and morbidity in newborns. Promising results using the EHG for labor prediction and other uses in obstetric care are the drivers of this work. This paper presents a database of 122 4-by-4 electrode EHG recordings performed on 45 pregnant women using a standardized recording protocol and a placement guide system. The recordings were performed in Iceland between 2008 and 2010. Of the 45 participants, 32 were measured repeatedly during the same pregnancy and participated in two to seven recordings. Recordings were performed in the third trimester (112 recordings) and during labor (10 recordings). The database includes simultaneously recorded tocographs, annotations of events and obstetric information on participants. The publication of this database enables independent and novel analysis of multi-electrode EHG by the researchers in the field and hopefully development towards new life-saving technology.

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Conflict of interest statement

The authors declare no competing financial interests.

Figures

Figure 1
Figure 1. Silicone backing and double sided adhesive sheet.
The dimensions (mm) of the silicone backing (a) and double sided adhesive sheet (b) are shown along with the back view of the silicone backing attached to the double sided adhesive sheet (c). The thickness of the silicone backing is 1.5 mm.
Figure 2
Figure 2. The electrode numbering scheme, as seen when looking at the abdomen of the participant.
Figure 3
Figure 3. Ideal position of the 4-by-4 electrode grid.
The third vertical line of electrodes (electrodes 9 to 12) is placed on the median axis of the uterus and the 10th–11th pair of electrodes half way between the uterine fundus and pubic symphysis. The corner electrodes of the 4-by-4 grid are labelled. The black electrodes represent the patient ground and the reference electrodes (sides not standardized).
Figure 4
Figure 4. The recording setup.
The abdominal electrodes and the tocodynamometer can be seen.
See this image and copyright information in PMC

References

Data Citations

    1. Alexandersson A., Steingrimsdottir T., Terrien J., Marque C., Karlsson B. 2014. PhysioNet. http://dx.doi.org/10.13026/C2159J - DOI

References

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    1. Lucovnik M. et al. Noninvasive uterine electromyography for prediction of preterm delivery. Am. J. Obstet. Gynecol. 204, 228.e1–228.10 (2011). - PMC - PubMed

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