ArticleChinese medical journal2018
Effect of Primary Elective Cesarean Delivery on Placenta Accreta: A Case-Control Study.
Article in Chinese medical journal, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07634679 (Impact of a Bladder Flap on Cesarean Scar Niche Development), which is not on this map. Cited by 11 papers, 1 of them a synthesis that pooled it.
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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.
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.
Impact of a Bladder Flap on Cesarean Scar Niche Development
Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.
- Risk of Placenta Accreta Spectrum Disorder After Prior Non-Cesarean Delivery Uterine Surgery: A Systematic Review and Meta-analysis.Obstetrics and gynecology · 2025Pooled it
- The Role of CXCR2, MMP-2, and MMP-9 in the Pathogenesis of Placenta Accreta: A Molecular Expression Study.Medicina (Kaunas, Lithuania) · 2025Observational
- Placenta accreta outcomes and risk factors in a referral hospital in north of Iran: A case control study.Health science reports · 2024Article
- Effect of cervical changes on the cesarean scar area and niche formation after preterm and term cesarean sections.Journal of ultrasound · 2023Article
- Review
- Fentanyl for labour pain management: a scoping review.BMC pregnancy and childbirth · 2022Article
- A 5-year experience on perinatal outcome of placenta accreta spectrum disorder managed by cesarean hysterectomy in southern Iranian women.BMC women's health · 2021Article
- Placenta Accreta Spectrum Disorders and Cesarean Scar Pregnancy Screening: Are we Asking the Right Questions?Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2021Article
- Cesarean section does not affect neonatal outcomes of pregnancies complicated with preterm premature rupture of membranes.Chinese medical journal · 2020Article
- Article
- Placenta Previa Accreta and Previous Cesarean Section: Some Clarifications.Chinese medical journal · 2018Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCesarean section (CS) is an independent risk factor for placenta accreta. Some researchers think that the timing of primary cesarean delivery is associated with placenta accreta in subsequent pregnancies. The aim of this study was to investigate the risk of placenta accreta following primary CS without labor, also called primary elective CS, in a pregnancy complicated with placenta previa.
methods: A retrospective, single-center, case-control study was conducted at Peking University Third Hospital. Relevant clinical data of singleton pregnancies between January 2010 and September 2017 were recorded. The case group included women with placenta accreta who had placenta previa and one previous CS. Control group included women with one previous CS that was complicated with placenta previa. Maternal age, body mass index, gestational age, fetal birth weight, gravity, parity, induced abortion, the rate of women received assisted reproductive technology, other uterine surgery, and primary elective CS were analyzed between the two groups.
results: The rate of primary elective CS (90.1% vs. 69.9%, P < 0.001) was higher, and maternal age was younger (32.7 ± 4.7 years vs. 34.6 ± 4.0 years, P < 0.001) in case group, compared with control group. Case group also had higher gravity and induced abortions compared with the control group (both P < 0.05). Primary CS without labor was associated with significantly increased risk of placenta accreta in a subsequent pregnancy complicated with placenta previa (odds ratio: 3.32; 95% confidential interval: 1.68-6.58).
conclusion: Women with a primary elective CS without labor have a higher chance of developing an accreta in a subsequent pregnancy that is complicated with placenta previa.
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