ArticleBMJ open2025
Birth weight-to-placental weight ratio and perinatal outcomes in gestational diabetes mellitus: a prospective cohort study at a university hospital in Bangkok, Thailand.
Article in BMJ open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Placenta-oriented self-assembled Aspirin-RGDV nanoconjugates attenuate preeclampsia through restoration of angiogenic balance.International journal of pharmaceutics: X · 2026Article
- Placental pathology in gestational diabetes mellitus: Associations with neonatal outcomes and postpartum dysglycemia.Acta obstetricia et gynecologica Scandinavica · 2026Observational
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5 authors.
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Abstract
objectivesTo compare birth weight-to-placental weight (BW:PW) ratios between pregnancies complicated by gestational diabetes mellitus (GDM) and normoglycaemic pregnancies, and to evaluate the associations between BW:PW ratio, perinatal outcomes, and placental histopathologic features within the GDM group.
designA prospective cohort study.
settingA university hospital in Bangkok, Thailand.
participantsA total of 200 women with GDM and 100 normoglycaemic controls. OUTCOME MEASURES: BW:PW ratios were calculated and compared between the two groups. Participants with GDM were stratified into three categories based on the BW:PW ratio percentiles: <10th, 10th-90th and >90th. Perinatal outcomes and placental histological abnormalities were analysed across these categories.
resultsMedian BW:PW ratios were not significantly different between the GDM and normoglycaemic groups: 6.3 (IQR 5.6 to 6.9) versus 6.2 (IQR 5.6 to 6.8); p=0.399. Within the GDM cohort, the BW:PW ratio cut-offs corresponding to the 10th and 90th percentiles were 5.2 and 7.6, respectively. The prevalence of small-for-gestational-age (SGA) neonates differed significantly among the three BW:PW ratio groups: 14.3% (<10th), 1.3% (10th-90th) and 4.5% (>90th); p=0.004. Similarly, the prevalence of chorangiosis varied significantly across these groups (66.7%, 52.9% and 22.7%, respectively; p=0.009). A BW:PW ratio <10th percentile was associated with an increased risk of SGA neonates (adjusted OR (aOR) 9.94; 95% CI 1.14 to 86.80), while a ratio >90th percentile was associated with reduced odds of chorangiosis (aOR 0.35; 95% CI 0.11 to 0.85).
conclusionsBW:PW ratios did not differ significantly between the GDM and normoglycaemic groups. However, in GDM pregnancies, extremes in the BW:PW ratio were associated with distinct perinatal and placental outcomes, indicating altered placental efficiency and potential clinical relevance. TRIAL REGISTRATION NUMBER: TCTR20211122001.
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