Evidence map›Paper›PMID 28692173›Full record

ArticleBJOG : an international journal of obstetrics and gynaecology2018

Perinatal and maternal morbidity and mortality among term singletons following midcavity operative vaginal delivery versus caesarean delivery.

G M Muraca, A Skoll, S Lisonkova, Y Sabr, R Brant, G W Cundiff, K S Joseph

Open access · hybridAbstract readComparative Study
In one paragraph

Article in BJOG : an international journal of obstetrics and gynaecology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
7.2field-weighted citation impact, top 2% of its field
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

23 citing papers in PubMed, 69 citations in OpenAlex.

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  5. Maternal morbidity following a trial of labor after cesarean birth: A scoping review of operative vaginal birth compared with cesarean birth in the second stage of labor.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026
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  13. Observational
  14. Maternal and neonatal trauma following operative vaginal delivery.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2022
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  17. Observational
  18. Episiotomy use among vaginal deliveries and the association with anal sphincter injury: a population-based retrospective cohort study.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2019
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 2 countries.

G M MuracaSchool of Population and Public Health, University of British Columbia, Vancouver, BC, Canada.
A SkollDepartment of Obstetrics & Gynaecology, University of British Columbia, Vancouver, BC, Canada.
S LisonkovaSchool of Population and Public Health, University of British Columbia, Vancouver, BC, Canada.
Y SabrDepartment of Obstetrics & Gynaecology, University of British Columbia, Vancouver, BC, Canada.
R BrantBC Children's Hospital Research Institute, Vancouver, BC, Canada.
G W CundiffDepartment of Obstetrics & Gynaecology, University of British Columbia, Vancouver, BC, Canada.
K S JosephSchool of Population and Public Health, University of British Columbia, Vancouver, BC, Canada.
BC Children's Hospital · CAUniversity of British Columbia · CAKing Khalid University Hospital · SA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo quantify severe perinatal and maternal morbidity/mortality associated with midcavity operative vaginal delivery compared with caesarean delivery.

designPopulation-based, retrospective cohort study.

settingBritish Columbia, Canada. POPULATION: Term, singleton deliveries (2004-2014) by attempted midcavity operative vaginal delivery or caesarean delivery in the second stage of labour, stratified by indication for operative delivery (n = 10 901 deliveries; 5057 indicated for dystocia, 5844 for fetal distress).

methodsMultinomial propensity scores and mulitvariable log-binomial regression models were used to estimate adjusted rate ratios (ARR) and 95% confidence intervals (95% CI).

main outcome measuresComposite severe perinatal morbidity/mortality (e.g. convulsions, severe birth trauma and perinatal death) and severe maternal morbidity (e.g. severe postpartum haemorrhage, shock, sepsis and cardiac complications).

resultsAmong deliveries with dystocia, attempted midcavity operative vaginal delivery was associated with higher rates of severe perinatal morbidity/mortality compared with caesarean delivery (forceps ARR 2.11, 95% CI 1.46-3.07; vacuum ARR 2.71, 95% CI 1.49-3.15; sequential ARR 4.68, 95% CI 3.33-6.58). Rates of severe maternal morbidity/mortality were also higher following midcavity operative vaginal delivery (forceps ARR 1.57, 95% CI 1.05-2.36; vacuum ARR 2.29, 95% CI 1.57-3.36). Among deliveries with fetal distress, there were significant increases in severe perinatal morbidity/mortality following attempted midcavity vacuum (ARR 1.28, 95% CI 1.04-1.61) and in severe maternal morbidity following attempted midcavity forceps delivery (ARR 2.34, 95% CI 1.54-3.56).

conclusionAttempted midcavity operative vaginal delivery is associated with higher rates of severe perinatal morbidity/mortality and severe maternal morbidity, though these effects differ by indication and instrument. TWEETABLE ABSTRACT: Perinatal and maternal morbidity is increased following midcavity operative vaginal delivery.

Indexed as

AdultBirth InjuriesBritish ColumbiaCesarean SectionDelivery, ObstetricDystociaFemaleFetal DistressHumansInfant, NewbornMaternal MortalityObstetrical ForcepsObstetric Labor ComplicationsPerinatal MortalityPregnancyRetrospective StudiesBirth injurycaesarean deliveryforceps extractioninstrumental vaginal deliveryobstetric traumaoperative vaginal deliveryvacuum extraction

Identifiers

PMID28692173
PMCPMC5947834
OpenAlexW2735368263

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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.