Trial reportObstetrics and gynecology2009
Risk factors for postpartum hemorrhage in vaginal deliveries in a Latin-American population.
Trial report in Obstetrics and gynecology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 41 papers, 3 of them syntheses that pooled it.
What it found
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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.
Effect of Adjunctive Misoprostol on Blood Loss at Vaginal Delivery
Use of Tranexamic Acid After Vaginal Delivery with Episiotomy a RCT Placebo Control Trail
Who cites it
41 citing papers in PubMed, 3 syntheses or guidelines pooled it, 195 citations in OpenAlex.
- Fetal Macrosomia and Postpartum Hemorrhage in Latin American and Caribbean Region: Systematic Review and Meta-analysis.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2023Pooled it
- Magnitude of postpartum hemorrhage and its associated factors in Ethiopia: a systematic review and meta-analysis.Reproductive health · 2022Pooled it
- Prostaglandins for management of retained placenta.The Cochrane database of systematic reviews · 2014Pooled it
- Postpartum hemorrhage in Suriname: A national descriptive study of hospital births and an audit of case management.PloS one · 2020Trial
- Trial
- Use of oxytocin during early stages of labor and its effect on active management of third stage of labor.American journal of obstetrics and gynecology · 2011Trial
- Risk Factors and Postpartum Hemorrhage among Women with Vaginal Delivery.Annals of African medicine · 2026Observational
- Global, regional, and national burden of maternal hemorrhage: a systematic analysis from the global burden of disease 2021 and projections to 2030.BMC pregnancy and childbirth · 2025Article
- The prevalence and timing of seroconversion during pregnancy-A retrospective study to enable safe transfusion.Transfusion · 2025Article
- Calculation methods for intraoperative blood loss: a literature review.BMC surgery · 2024Review
- Association between duration of intrapartum oxytocin exposure and obstetric hemorrhage.Archives of gynecology and obstetrics · 2024Article
- A comparative analysis of Postpartum Hemorrhage incidence and influencing factors between nulliparous and multiparous women in Hunan Province, China: A multicenter retrospective cohort study.Preventive medicine reports · 2024Article
- Risk factors for postpartum haemorrhage in women with histologically verified placenta accreta spectrum disorders: a retrospective single-centre cross-sectional study.BMC pregnancy and childbirth · 2023Observational
- Prediction of postpartum hemorrhage using traditional statistical analysis and a machine learning approach.AJOG global reports · 2023Article
- Prevalence of risk factors for primary postpartum hemorrhage in a university hospital.Revista brasileira de enfermagem · 2023Article
- Development and Validation of a Predictive Tool for Postpartum Hemorrhage after Vaginal Delivery: A Prospective Cohort Study.Biology · 2022Article
- Iron Deficiency Anaemia and Atonic Postpartum Haemorrhage Following Labour.Reproductive sciences (Thousand Oaks, Calif.) · 2022Article
- Article
- Development and Validation of Prognostic Nomogram for Postpartum Hemorrhage After Vaginal Delivery: A Retrospective Cohort Study in China.Frontiers in medicine · 2022Article
- Angiographic features and transarterial embolization of retained placenta with abnormal vaginal bleeding.CVIR endovascular · 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
4 authors at 2 institutions in 2 countries.
Funding
Abstract
objectiveTo identify risk factors for immediate postpartum hemorrhage after vaginal delivery in a South American population.
methodsThis was a prospective cohort study including all vaginal births (N=11,323) between October and December 2003 and October and December 2005 from 24 maternity units in two South American countries (Argentina and Uruguay). Blood loss was measured in all births using a calibrated receptacle. Moderate postpartum hemorrhage and severe postpartum hemorrhage were defined as blood loss of at least 500 mL and at least 1,000 mL, respectively.
resultsModerate and severe postpartum hemorrhage occurred in 10.8% and 1.9% of deliveries, respectively. The risk factors more strongly associated and the incidence of moderate postpartum hemorrhage in women with each of these factors were: retained placenta (33.3%) (adjusted odds ratio [OR] 6.02, 95% confidence interval [CI] 3.50-10.36), multiple pregnancy (20.9%) (adjusted OR 4.67, CI 2.41-9.05), macrosomia (18.6%) (adjusted OR 2.36, CI 1.93-2.88), episiotomy (16.2%) (adjusted OR 1.70, CI 1.15-2.50), and need for perineal suture (15.0%) (adjusted OR 1.66, CI 1.11-2.49). Active management of the third stage of labor, multiparity, and low birth weight were found to be protective factors. Severe postpartum hemorrhage was associated with retained placenta (17.1%) (adjusted OR 16.04, CI 7.15-35.99), multiple pregnancy (4.7%) (adjusted OR 4.34, CI 1.46-12.87), macrosomia (4.9%) (adjusted OR 3.48, CI 2.27-5.36), induced labor (3.5%) (adjusted OR 2.00, CI 1.30-3.09), and need for perineal suture (2.5%) (adjusted OR 2.50, CI 1.87-3.36).
conclusionMany of the risk factors for immediate postpartum hemorrhage in this South American population are related to complications of the second and third stage of labor. LEVEL OF EVIDENCE: II.
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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.