ArticleArchives of gynecology and obstetrics2021
Effect of types of placenta previa on maternal and neonatal outcomes: a 10-year retrospective cohort study.
Article in Archives of gynecology and obstetrics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 33 citations in OpenAlex.
- Pooled it
- Risk of preterm birth for placenta previa or low-lying placenta and possible preventive interventions: A systematic review and meta-analysis.Frontiers in endocrinology · 2022Pooled it
- Association of caesarean section history with adverse pregnancy outcomes in placenta accreta spectrum: the mediating role of placenta previa.Journal of global health · 2026Article
- Risk of placenta previa in assisted reproductive technology: A Nordic population study with sibling analyses.PLoS medicine · 2025Article
- Impact of placental location matter in placenta accreta spectrum disorders.Quantitative imaging in medicine and surgery · 2024Article
- Tranexamic Acid in Pregnant Women With Placenta Previa: A Double-Blind, Multicenter Randomized Clinical Trial.Cureus · 2024Article
- Impact of Prior Cesarean Delivery on Pregnancy Outcomes and Hemorrhage Risks in Complete Placenta Previa: A Decade-Long Retrospective Analysis.Medical science monitor : international medical journal of experimental and clinical research · 2024Article
- Risk factors of severe postpartum hemorrhage in pregnant women with placenta previa or low-lying placenta: a retrospective cohort study.BMC pregnancy and childbirth · 2024Article
- Determinants of puerperal sepsis among postpartum women: a case-control study in East Shoa Zone public hospitals, Central Ethiopia.BMJ open · 2024Article
- Obstetric blood transfusion in placenta previa patients with prenatal anemia: a retrospective study.BMC pregnancy and childbirth · 2024Article
- Abnormal microRNA expression profile at early stages of gestation in pregnancies destined to develop placenta previa.Frontiers in medicine · 2024Article
- High Risk Factors for Placenta Accreta Other than Pregnancy and Their Impact on Patient Prognosis.Maternal-fetal medicine (Wolters Kluwer Health, Inc.) · 2023Article
- Maternal outcomes according to the type of placenta previa in a high complexity hospital in Cali, Colombia. Retrospective cohort studyRevista colombiana de obstetricia y ginecologia · 2023Article
- Blood Type and Outcomes in Pregnant Women with Placenta Previa.Oxidative medicine and cellular longevity · 2023Article
- Cook Cervical Ripening Balloon for placenta accreta spectrum disorders with placenta previa: a novel approach to uterus preserving.Archives of gynecology and obstetrics · 2022Article
- Association of Placenta Previa With Severe Maternal Morbidity Among Patients With Placenta Accreta Spectrum Disorder.JAMA network open · 2022Article
- Anesthetic management in cesarean delivery of women with placenta previa: a retrospective cohort study.BMC anesthesiology · 2021Article
- Probability of severe postpartum hemorrhage in repeat cesarean deliveries: a multicenter retrospective study in China.Scientific reports · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
14 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThrough this study, we aimed to evaluate the effects of different types of placenta previa (PP) on maternal and neonatal outcomes.
methodsThis study was conducted in The Third Affiliated Hospital of Guangzhou Medical University and Tongji Hospital between January 2009 and 2019. PP was traditionally classified into four types, namely low-lying placenta, marginal, partial, and complete PP. Previous studies have classified PP into two types, namely low-lying placenta and PP. Based on our clinical experience, we proposed the classification of PP into three types, for the first time, which included low-lying placenta, "marpartial" (marginal and partial) PP, and complete PP. Multivariate logistic regression analysis was performed to determine the effects of different types of PP on maternal and neonatal outcomes.
resultsIn total, 4490 singleton pregnancies were complicated with PP. In the four-classification method, compared with women with low-lying placenta, women with complete PP had a risk of placenta accrete spectrum disorders, postpartum hemorrhage (PPH), hemorrhagic shock, severe PPH, blood transfusion, hysterectomy, puerperal infection, preterm labor, NICU admission, and low birth weight. There was no difference in maternal and neonatal outcomes between marginal and partial PP, except for increased chances of preterm labor and low birth weight in partial PP. In the two-classification method, PP was the risk factor for most of the adverse maternal and neonatal outcomes, compared with low-lying placenta.
conclusionComplete PP and low-lying placenta were associated with the highest and lowest risks of adverse pregnancy outcomes, respectively, whereas clinically similar outcomes were observed between marginal and partial PP. The three-classification of PP may be practical from the clinical perspective.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.