Trial reportBMC pregnancy and childbirth2014
Calibrated delivery drape versus indirect gravimetric technique for the measurement of blood loss after delivery: a randomized trial.
Trial report in BMC pregnancy and childbirth, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01885845 (A Comparison of the Excellent BRASSS-V Drape™ and an Indirect Blood Measurement Protocol for the Measurement of Blood Loss During Third Stage of Vaginal Delivery), which is not on this map. Cited by 24 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.
A Comparison of the Excellent BRASSS-V Drape™ and an Indirect Blood Measurement Protocol for the Measurement of Blood Loss During Third Stage of Vaginal Delivery
Who cites it
24 citing papers in PubMed, 5 syntheses or guidelines pooled it.
- 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
- Quantification of blood loss for the diagnosis of postpartum hemorrhage: a systematic review and meta-analysis.Revista brasileira de enfermagem · 2023Pooled it
- Comparison of common perioperative blood loss estimation techniques: a systematic review and meta-analysis.Journal of clinical monitoring and computing · 2021Pooled it
- Methods for blood loss estimation after vaginal birth.The Cochrane database of systematic reviews · 2018Pooled it
- Trial
- An Injectable, Self-Expanding Hemostatic Foam for Field-Compatible Postpartum Hemorrhage Management.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Performance of quantitative and graduated estimated blood loss in detection of postpartum hemorrhage after spontaneous vaginal delivery.Pregnancy (Hoboken, N.J.) · 2026Article
- Article
- Rethinking intraoperative blood loss monitoring: a decision-oriented framework for clinically integrated assessment.International journal of burns and trauma · 2026Review
- Quantitative blood loss values reveal high rates of undiagnosed postpartum hemorrhage.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2025Article
- Intraoperative Blood Loss Predicts Local Recurrence After Curative Resection for Stage I-III Colorectal Cancer.World journal of surgery · 2025Article
- Quantitative Validation of Hematocrit Percentage Drop Cutoff Points in Postpartum Hemorrhage: An Automated Gravimetric Approach.Maternal-fetal medicine (Wolters Kluwer Health, Inc.) · 2025Article
- Management of Postpartum Hemorrhage in Low- and Middle-Income Countries: Emergency Need for Updated Approach Due to Specific Circumstances, Resources, and Availabilities.Journal of clinical medicine · 2024Review
- A randomized controlled study comparing oral misoprostol with intramuscular oxytocin in active management of third stage of labour.Obstetrics & gynecology science · 2024Article
- Two Postpartum Blood Collection Devices: The Brass-V Drape and MaternaWell Tray-As Experienced by Birth Attendants and Birthing Women-A Questionnaire-Based Randomised Study.Obstetrics and gynecology international · 2024Article
- Estimating blood loss during cesarean delivery: A comparison of methods.Journal of Taibah University Medical Sciences · 2022Article
- Understanding How Health Providers Identify Women with Postpartum Hemorrhage: A Qualitative Study.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2021Article
- Prospective cohort study of induction of labor: Indications, outcome and postpartum hemorrhage.European journal of midwifery · 2021Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundTrials of interventions for PPH prevention and treatment rely on different measurement methods for the quantification of blood loss and identification of PPH. This study's objective was to compare measures of blood loss obtained from two different measurement protocols frequently used in studies.
methodsNine hundred women presenting for vaginal delivery were randomized to a direct method (a calibrated delivery drape) or an indirect method (a shallow bedpan placed below the buttocks and weighing the collected blood and blood-soaked gauze/pads). Blood loss was measured from immediately after delivery for at least one hour or until active bleeding stopped.
resultsSignificantly greater mean blood loss was recorded by the direct than by the indirect measurement technique (253.9 mL and 195.3 mL, respectively; difference = 58.6 mL (95% CI: 31-86); p < 0.001). Almost twice as many women in the direct than in the indirect group measured blood loss > 500 mL (8.7% vs. 4.7%, p = 0.02).
conclusionsThe study suggests a real and significant difference in blood loss measurement between these methods. Research using blood loss measurement as an endpoint needs to be interpreted taking measurement technique into consideration.
trial registrationThis study has been registered at clinicaltrials.gov as NCT01885845.
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