Evidence map›Paper›PMID 41559629›Full record

ArticleBMC pregnancy and childbirth2026

Association of uterine fibroids with adverse pregnancy outcomes: a retrospective cohort study.

Jie Wu, Xinhong Zhang

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Article in BMC pregnancy and childbirth, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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2 authors.

Jie WuDepartment of Obstetrics and Gynecology, Xuanwu Hospital, Capital Medical University, No. 45 Changchun Street, Xicheng District, Beijing, 100053, China.
Xinhong ZhangDepartment of Obstetrics and Gynecology, Xuanwu Hospital, Capital Medical University, No. 45 Changchun Street, Xicheng District, Beijing, 100053, China. zhangxhxh@outlook.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo investigate the independent association between uterine fibroids and adverse pregnancy outcomes, and to explore the influence of fibroid characteristics, including type and location, on these risks.

methodsThis retrospective cohort study was conducted at a single tertiary hospital in Beijing, China, including all singleton deliveries between January 2022 and April 2023. A total of 2,118 pregnant women were enrolled, comprising 317 with uterine fibroids (fibroid group) and 1,801 without (control group). Maternal baseline characteristics, obstetric outcomes, and perinatal data were extracted from electronic medical records. Multivariable logistic regression analyses were performed to determine if uterine fibroids were independent risk factors for cesarean section, postpartum hemorrhage (PPH, ≥ 500 mL), and fetal malpresentation, after adjusting for potential confounders. Subgroup analyses were conducted to evaluate risks associated with fibroid size, number, type, and location.

resultsWomen in the fibroid group were significantly older (34.4 ± 3.7 vs. 32.1 ± 4.0 years, P < 0.001) and had higher rates of gestational diabetes mellitus, hypertensive disorders, severe preeclampsia, placenta previa, placental accreta spectrum, and anemia (all P < 0.05). In univariate analysis, the fibroid group had significantly higher rates of cesarean Sect. (54.9% vs. 42.0%, P < 0.001), PPH (28.1% vs. 7.3%, P < 0.001), and fetal malpresentation (5.0% vs. 2.6%, P = 0.018). After a more comprehensive adjustment for confounders, including placental disorders, uterine fibroids remained an independent risk factor for cesarean section (adjusted odds ratio [aOR] 1.52, 95% CI: 1.18–1.95), PPH (aOR 4.98, 95% CI: 3.69–6.72), and fetal malpresentation (aOR 1.99, 95% CI: 1.10–3.60). Subgroup analysis revealed that submucosal type, lower uterine segment location, large fibroids (≥ 5 cm), and multiple fibroids were associated with a significantly increased risk of adverse outcomes.

conclusionThe presence of uterine fibroids during pregnancy is a strong and independent risk factor for cesarean section, postpartum hemorrhage, and fetal malpresentation. Specific fibroid characteristics, such as submucosal type, lower segment location, large size, and multiplicity, further amplify these risks. These findings underscore the need for heightened antenatal surveillance and meticulous delivery planning for this high-risk population.

Indexed as

LeiomyomaPregnancy Complications, NeoplasticPregnancy OutcomeUterine NeoplasmsAdultCesarean SectionChinaFemaleHumansPostpartum HemorrhagePregnancyRetrospective StudiesRisk FactorsCesarean sectionPostpartum hemorrhagePregnancy outcomeRetrospective cohort studyUterine fibroids

Identifiers

PMID41559629
PMCPMC12903240

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LicenceCC BY-NC-ND
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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 Socratic graph.