Evidence map›Paper›PMID 41873228›Full record

ArticleBJOG : an international journal of obstetrics and gynaecology2026

Bariatric Surgery, Gestational Diabetes and Perinatal Outcomes: A Population-Based Study.

Tessa Weir, Ibinabo Ibiebele, Deborah Randall, Tanya Nippita, Siranda Torvaldsen, Felicity Gallimore, Jonathan Morris, Sarah Glastras

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BJOG : an international journal of obstetrics and gynaecology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

8 authors.

Tessa WeirKolling Institute, Northern Sydney Local Health, Sydney, New South Wales, Australia.ORCID https://orcid.org/0000-0001-9663-2624
Ibinabo IbiebeleKolling Institute, Northern Sydney Local Health, Sydney, New South Wales, Australia.ORCID https://orcid.org/0000-0001-6024-2958
Deborah RandallReproduction and Perinatal Centre Northern Precinct, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia.
Tanya NippitaReproduction and Perinatal Centre Northern Precinct, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia.
Siranda TorvaldsenKolling Institute, Northern Sydney Local Health, Sydney, New South Wales, Australia.
Felicity GallimoreReproduction and Perinatal Centre Northern Precinct, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia.
Jonathan MorrisClinical Excellence Commission, NSW Health, St Leonards, New South Wales, Australia.
Sarah GlastrasKolling Institute, Northern Sydney Local Health, Sydney, New South Wales, Australia.

Funding

National Health and Medical Research Council' (NHMRC)
6 · The paper itself

Abstract

objectiveTo examine the independent and combined associations of metabolic and bariatric surgery (MBS) and gestational diabetes mellitus (GDM) with adverse maternal and neonatal outcomes.

designPopulation-based retrospective cohort study.

settingNew South Wales (NSW), Australia. POPULATION: Four hundred twenty-nine thousand five hundred seventy-six singleton births from 2016 to 2020 in NSW, including 3001 women with a history of MBS.

methodsLinked perinatal and hospital data were used to classify women into four groups: no MBS/no GDM, MBS/no GDM, GDM/no MBS, and GDM/MBS. Multivariable logistic regression was used to examine associations with adverse outcomes, adjusting for maternal age, BMI, parity, smoking, country of birth, and gestational age.

main outcome measuresNeonatal and maternal outcomes including preterm birth, (large-for-gestational-age) LGA, small-for-gestational-age (SGA), neonatal hypoglycaemia, preeclampsia and postpartum haemorrhage.

resultsWomen with both GDM and prior MBS had the highest odds of adverse outcomes. Compared to women without GDM or surgery, this group had increased odds of LGA (aOR 1.42, 95% CI 1.22-1.65), preterm birth (aOR 1.93, 95% CI 1.52-2.42), and neonatal hypoglycaemia (aOR 4.98, 95% CI 4.22-5.84). Preeclampsia risk was modestly increased across all groups but attenuated after BMI adjustment. Postpartum haemorrhage was reduced in women with prior surgery (aOR 0.81, 95% CI 0.72-0.92), while induction of labour was more likely in all exposure groups.

conclusionsgestational diabetes mellitus (GDM) and prior MBS confer independent and combined risks for adverse perinatal outcomes. These findings support the need for personalised antenatal care strategies in this high-risk population.

Indexed as

Bariatric SurgeryDiabetes, GestationalPregnancy ComplicationsPregnancy OutcomeAdultFemaleHumansInfant, Large for Gestational AgeInfant, NewbornInfant, Small for Gestational AgeNew South WalesPre-EclampsiaPregnancyPremature BirthRetrospective StudiesRisk Factorsbariatric surgerygestational diabetesperinatal riskpregnancy outcomes

Identifiers

PMID41873228
PMCPMC13418882

What Socratic 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 Socratic graph.