Trial reportBMJ (Clinical research ed.)2010
Effect of a collector bag for measurement of postpartum blood loss after vaginal delivery: cluster randomised trial in 13 European countries.
Trial report in BMJ (Clinical research ed.), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 5 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
25 citing papers in PubMed, 5 syntheses or guidelines pooled it, 143 citations in OpenAlex.
- Effects of combinations of diagnostic and treatment strategies for postpartum haemorrhage: a network meta-analysis.The Cochrane database of systematic reviews · 2025Pooled it
- Pooled it
- Comparison of common perioperative blood loss estimation techniques: a systematic review and meta-analysis.Journal of clinical monitoring and computing · 2021Pooled it
- Care technologies to prevent and control hemorrhage in the third stage of labor: a systematic review.Revista latino-americana de enfermagem · 2019Pooled it
- Methods for blood loss estimation after vaginal birth.The Cochrane database of systematic reviews · 2018Pooled it
- Trial
- Trial
- Effect of routine controlled cord traction as part of the active management of the third stage of labour on postpartum haemorrhage: multicentre randomised controlled trial (TRACOR).BMJ (Clinical research ed.) · 2013Trial
- Performance of quantitative and graduated estimated blood loss in detection of postpartum hemorrhage after spontaneous vaginal delivery.Pregnancy (Hoboken, N.J.) · 2026Article
- Clinical care processes for early postpartum haemorrhage diagnosis: a nested observational study within the E-MOTIVE trial.Frontiers in global women's health · 2025Article
- Blood loss quantification during major abdominal surgery: prospective observational cohort study.BMC surgery · 2024Observational
- Review of Current Insights and Therapeutic Approaches for the Treatment of Refractory Postpartum Hemorrhage.International journal of women's health · 2023Review
- Multidisciplinary Programed Learning Simulation to Improve Visual Blood Loss Estimation for Obstetric Trauma Scenarios.Journal of advances in medical education & professionalism · 2022Article
- Carbetocin versus Oxytocin for the Prevention of Postpartum Hemorrhage in Cesarean Deliveries: A Retrospective Study of Two Consecutive Periods.AJP reports · 2020Article
- Incidence of postpartum haemorrhage defined by quantitative blood loss measurement: a national cohort.BMC pregnancy and childbirth · 2020Article
- Bimanual examination for clot evacuation: a retrospective cohort study of women with postpartum haemorrhage after vaginal delivery.BMC pregnancy and childbirth · 2020Article
- Patient blood management in obstetrics: prevention and treatment of postpartum haemorrhage. A NATA consensus statement.Blood transfusion = Trasfusione del sangue · 2019Article
- Article
- Incidence of immediate postpartum hemorrhages in French maternity units: a prospective observational study (HERA study).BMC pregnancy and childbirth · 2016Observational
- Postpartum blood loss: visual estimation versus objective quantification with a novel birthing drape.Singapore medical journal · 2016Article
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo evaluate the effectiveness of the systematic use of a transparent plastic collector bag to measure postpartum blood loss after vaginal delivery in reducing the incidence of severe postpartum haemorrhage.
designCluster randomised trial.
setting13 European countries.
participants78 maternity units and 25 381 women who had a vaginal delivery.
interventionsMaternity units were randomly assigned to systematic use of a collector bag (intervention group) or to continue to visually assess postpartum blood loss after vaginal delivery (control group).
main outcome measuresThe primary outcome was the incidence of severe postpartum haemorrhage in vaginal deliveries, defined as a composite of one or more of blood transfusion, intravenous plasma expansion, arterial embolisation, surgical procedure, admission to an intensive care unit, treatment with recombinant factor VII, and death.
resultsSevere postpartum haemorrhage occurred in 189 of 11 037 of vaginal deliveries (1.71%) in the intervention group compared with 295 of 14 344 in the control group (2.06%). The difference was not statistically significant either in individual level analysis (adjusted odds ratio 0.82, 95% confidence interval 0.26 to 2.53) or in cluster level analysis (difference in weighted mean rate adjusted for baseline rate 0.16%, 95% confidence interval -0.69% to 1.02%).
conclusionCompared with visual estimation of postpartum blood loss the use of a collector bag after vaginal delivery did not reduce the rate of severe postpartum haemorrhage.
trial registrationCurrent Controlled Trials ISRCTN66197422.
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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.