Evidence map›Paper›PMID 30863945›Full record

ArticleInternational urogynecology journal2019

Effects of delivery mode and age on motor unit properties of the external anal sphincter in women.

Xuhong Li, Chuan Zhang, Nicholas Dias, Jiaojiao Liu, Fang Hu, Shuo Yang, Yanhua Zhou, Yingchun Zhang

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Article in International urogynecology journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

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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

1 citing paper in PubMed.

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4 · The record

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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

8 authors.

Xuhong LiThe Third Xiangya Hospital, Central South University, Changsha, China.
Chuan ZhangDepartment of Biomedical Engineering, University of Houston, 360 HBS Building, 4811 Calhoun Rd., Houston, TX, 77004, USA.
Nicholas DiasDepartment of Biomedical Engineering, University of Houston, 360 HBS Building, 4811 Calhoun Rd., Houston, TX, 77004, USA.
Jiaojiao LiuThe Third Xiangya Hospital, Central South University, Changsha, China.
Fang HuThe Third Xiangya Hospital, Central South University, Changsha, China.
Shuo YangThe Third Xiangya Hospital, Central South University, Changsha, China.
Yanhua ZhouThe Third Xiangya Hospital, Central South University, Changsha, China.
Yingchun ZhangDepartment of Biomedical Engineering, University of Houston, 360 HBS Building, 4811 Calhoun Rd., Houston, TX, 77004, USA. yzhang94@uh.edu.ORCID 0000-0002-1927-4103

Funding

Central South University 2013-94Health and Family Planning Commission of Hunan Provinceommission of Health and Family Planning (CN) B2014-040Hunan Provincial Science and Technology Department 2015WK3008
6 · The paper itself

Abstract

introduction and hypothesisThis study aimed to assess the individual and interactive effects of delivery mode and age on the function of the external anal sphincter (EAS) by analyzing the motor unit properties with intramuscular electromyography (EMG). Results are expected to improve the understanding of delivery-related occult obstetric EAS injuries and its development over the aging process and further support early clinical detection and intervention.

methodsA total of 49 postpartum women were recruited into four test groups according to their age and delivery mode: young vaginal delivery (Y-VD), elderly vaginal delivery (E-VD), young cesarean section (Y-CS), and elderly cesarean section (E-CS) groups. Anorectal ultrasonography, manometry, and intramuscular EMG were employed for comprehensive evaluation of EAS function.

resultsNo significant difference in anorectal ultrasonography and most manometry measurements was associated with delivery age or mode. Intramuscular EMG, however, revealed a statistically significant difference in the characteristics of motor unit potentials (MUPs), including duration, turns, phases, and multiphase wave ratio between four subject groups. No significant interaction effect between age and delivery mode was found.

conclusionsDelivery mode and age have a significant effect on the neuromuscular function of the EAS, suggesting a potential protectiveness of cesarean section against impairment to the EAS. Our results do not provide significant evidence regarding the interaction effect of delivery mode and age; further investigations are needed to confirm this conclusion.

Indexed as

Cesarean SectionParturitionAdultAnal CanalElectromyographyFemaleHumansManometryMaternal AgeMiddle AgedPregnancyUltrasonographyAgingDelivery modeExternal anal sphincterIntramuscular electromyographyMotor unit potential analysis

Identifiers

PMID30863945

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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.