Evidence map›Paper›PMID 24466235›Full record

ArticlePloS one2014

Velocity and directionality of the electrohysterographic signal propagation.

Lasse Lange, Anders Vaeggemose, Preben Kidmose, Eva Mikkelsen, Niels Uldbjerg, Peter Johansen

Abstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

  1. An update on pacemaking in the myometrium.The Journal of physiology · 2026
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  12. Connectivity Measures of Uterine Activity using Magnetomyography.Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference · 2018
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  19. Observational
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Lasse LangeDepartment of Engineering, Faculty of Science and Technology, Aarhus University, Aarhus, Denmark.
Anders VaeggemoseDepartment of Engineering, Faculty of Science and Technology, Aarhus University, Aarhus, Denmark.
Preben KidmoseDepartment of Engineering, Faculty of Science and Technology, Aarhus University, Aarhus, Denmark.
Eva MikkelsenDepartment of Obstetrics and Gynecology, Aarhus University Hospital, Aarhus, Denmark.
Niels UldbjergDepartment of Obstetrics and Gynecology, Aarhus University Hospital, Aarhus, Denmark.
Peter JohansenDepartment of Engineering, Faculty of Science and Technology, Aarhus University, Aarhus, Denmark.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe initiation of treatment for women with threatening preterm labor requires effective distinction between true and false labor. The electrohysterogram (EHG) has shown great promise in estimating and classifying uterine activity. However, key issues remain unresolved and no clinically usable method has yet been presented using EHG. Recent studies have focused on the propagation velocity of the EHG signals as a potential discriminator between true and false labor. These studies have estimated the propagation velocity of individual spikes of the EHG signals. We therefore focus on estimating the propagation velocity of the entire EHG burst recorded during a contraction in two dimensions. STUDY

designEHG measurements were performed on six women in active labor at term, and a total of 35 contractions were used for the estimation of propagation velocity. The measurements were performed using a 16-channel two-dimensional electrode grid. The estimates were calculated with a maximum-likelihood approach.

resultsThe estimated average propagation velocity was 2.18 (±0.68) cm/s. No single preferred direction of propagation was found.

conclusionThe propagation velocities estimated in this study are similar to those reported in other studies but with a smaller intra- and inter-patient variation. Thus a potential tool has been established for further studies on true and false labor contractions.

Indexed as

FemaleHumansHysteroscopyLikelihood FunctionsObstetric Labor, PrematurePregnancySignal Processing, Computer-AssistedUterine ContractionUterus

Identifiers

PMID24466235
PMCPMC3897754

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.