Definition and research guide
This page combines a MeSH definition, publication statistics and selected research abstracts. It is a starting point for reading the literature, not a medical textbook or a systematic evidence review.
Content available: 4 complete abstracts (1,223 words), 10 references. Full article text is not stored or reproduced here; follow the PMID, DOI or PMC links to read the original sources and their access terms.
Definition
Excess blood loss from uterine bleeding associated with obstetric labor or childbirth. It is defined as blood loss greater than 500 ml or of the amount that adversely affects the maternal physiology, such as blood pressure and hematocrit. Postpartum hemorrhage is divided into two categories, immediate (within first 24 hours after birth) or delayed (after 24 hours postpartum).
Definition: NLM Medical Subject Headings (MeSH) scope note (Public domain (U.S. National Library of Medicine); attribution requested). View the MeSH record.
Also known as: Hemorrhage, Postpartum; Delayed Postpartum Hemorrhage; Hemorrhage, Delayed Postpartum; Postpartum Hemorrhage, Delayed; Immediate Postpartum Hemorrhage; Hemorrhage, Immediate Postpartum; Postpartum Hemorrhage, Immediate.
Where it fits in the MeSH classification
- Broader topics
- Obstetric Labor Complications; Puerperal Disorders; Uterine Hemorrhage
Related concepts
- Obstetric Labor
- Childbirth
- Blood Pressure
- Hematocrit
Research landscape
PubMed indexes 9,711 records tagged with the MeSH heading “Postpartum Hemorrhage” (counts retrieved 2026-11-04). 2,637 of them (27.2%) were published from 2020 onward, and the busiest period so far is 2010-2019 with 3,363 records.
Reviews account for 1,343 records (13.8%) and meta-analyses for 243. Randomized controlled trials number 575 (5.9%) as a share of all records on the topic.
Show the data
| Period | Records |
|---|---|
| through 1999 | 2,282 |
| 2000-2009 | 1,429 |
| 2010-2019 | 3,363 |
| 2020 onward | 2,637 |
Publication-type chart data
| Type | Records | Share |
|---|---|---|
| Reviews | 1,343 | 13.8% |
| Meta-analyses | 243 | 2.5% |
| Randomized controlled trials | 575 | 5.9% |
Method: PubMed query "Postpartum Hemorrhage"[MeSH Terms] with publication-type and date filters, retrieved 2026-11-04.
Reading the evidence in kidney, urology and women's health
Kidney, urinary and reproductive health research uses lab markers (such as creatinine), imaging, symptom scores and registry data on pregnancy and birth. Findings about pregnancy are especially sensitive to who was studied and when in pregnancy exposure occurred. Nothing on this page is advice about treatment, fertility or pregnancy; speak to a qualified clinician. Check the population, the outcome measured and whether the study accounted for other health differences between groups.
Evidence from open-access studies
These open-access studies come from PubMed’s best-match results for this heading (papers whose main topic it is), ranked here by citation count, with one recent addition. Each abstract is reproduced in full under its recorded open licence so that you can read the authors’ own words. They illustrate the literature; they are not a systematic summary of it. Citation counts measure attention, not reliability or clinical benefit.
Tranexamic acid for postpartum bleeding: a systematic review and individual patient data meta-analysis of randomised controlled trials [1]
Abstract reading summary — source excerpts
- Opening excerpt
- BackgroundTranexamic acid is a recommended treatment for women with a clinical diagnosis of postpartum haemorrhage, but whether it can prevent bleeding is unclear.
- Closing excerpt
- FundingThe Bill & Melinda Gates Foundation.
- Interpretation limits
- Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (408 words)
BackgroundTranexamic acid is a recommended treatment for women with a clinical diagnosis of postpartum haemorrhage, but whether it can prevent bleeding is unclear. We conducted a systematic review and individual patient data (IPD) meta-analysis of randomised controlled trials to assess the effects of tranexamic acid in women giving birth.MethodsIn this systematic review and IPD meta-analysis, we searched the WHO International Clinical Trials Registry Platform from database inception to Aug 4, 2024 for randomised trials that assessed the effects of tranexamic acid in women giving birth. Trials were eligible if they were prospectively registered, placebo-controlled, included more than 500 women, and had a low risk of bias for random sequence generation and allocation concealment. IPD were requested from the trial investigators. The primary outcomes were the numbers of women with life-threatening bleeding and thromboembolic events. We used a one-stage model to analyse the data and explored whether the effect of tranexamic acid varied by the underlying risk of life-threatening bleeding, type of birth, presence of moderate or severe anaemia, or timing of administration (before or after a diagnosis of postpartum haemorrhage). This study is registered with PROSPERO, CRD42022345775.FindingsWe analysed data on 54 404 women from five trials. We obtained IPD for 43 409 women from four trials and aggregate data on 10 995 women from one trial. All trials had a low risk of bias. Life-threatening bleeding occurred in 178 (0·65%) of 27 300 women in the tranexamic acid group versus 230 (0·85%) of 27 093 women in the placebo group (pooled odds ratio [OR] 0·77 [95% CI 0·63-0·93]; p=0·008). There was no evidence that the effect of tranexamic acid varied by the underlying risk of life-threatening bleeding, type of birth, presence of moderate or severe anaemia or timing of administration. No significant difference was identified between tranexamic acid and placebo groups with regard to thromboembolic events: 50 (0·2%) of 26 571 women in the tranexamic acid group had fatal or non-fatal thromboembolic events versus 52 (0·2%) of 26 373 women in the placebo group (pooled OR 0·96 [0·65-1·41]; p=0·82) with no significant heterogeneity identified in the subgroup analyses.InterpretationTranexamic acid reduces the risk of life-threatening postpartum bleeding. We found no evidence that tranexamic acid increases the risk of thrombosis. Although we do not recommend the use of tranexamic acid in all women giving birth, consideration should be given to its use before a diagnosis of postpartum haemorrhage in women at high risk of death.FundingThe Bill & Melinda Gates Foundation.
Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 39461793 · DOI · PMC12197804
FIGO good practice recommendations on anemia in pregnancy, to reduce the incidence and impact of postpartum hemorrhage (PPH) [2]
Abstract reading summary — source excerpts
- Opening excerpt
- Anemia affects 32 million pregnant women globally, contributing annually to more than 115 000 maternal deaths and 591 000 perinatal deaths worldwide.
- Closing excerpt
- Finally, the relationship between anemia and postpartum hemorrhage is highlighted.
- Interpretation limits
- Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (260 words)
Anemia affects 32 million pregnant women globally, contributing annually to more than 115 000 maternal deaths and 591 000 perinatal deaths worldwide. Low- and middle-income countries (LMICs) bear the highest burden of anemia in pregnancy, with nearly 50% of affected pregnant women. It is now 2025, which is WHO's target year for a 50% reduction in maternal anemia, and the global prevalence of anemia in pregnancy remains more than twice the target of 15%. This calls for a renewed global focus on optimal approaches for reducing the burden and complications of anemia in pregnancy. In this FIGO Childbirth and Postpartum Hemorrhage (PPH) Committee paper, current best evidence on anemia in pregnancy has been reviewed and synthesized, to make recommendations on screening, diagnosis, prevention, and treatment of anemia in pregnancy. We recommend that all pregnant women should be screened for anemia in pregnancy at booking and again at 28 weeks of pregnancy, with a full blood count (FBC), or packed cell volume/hemoglobin concentration in settings where FBC is not available. A hemoglobin concentration cutoff of less than 11 g/dL in all trimesters of pregnancy and during the postpartum period, as well as in all settings and populations, is recommended for the diagnosis of anemia in pregnancy. Routine iron and folic acid supplementation, either alone, or as components of multiple micronutrient supplements, is also recommended during pregnancy. We also made recommendations for malaria and anti-helminthic chemoprophylaxis, hemoglobinopathy screening, iron, folate, and multiple micronutrient supplementation, and blood transfusion in pregnant women with hemoglobinopathies. Finally, the relationship between anemia and postpartum hemorrhage is highlighted.
Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 41031541 · DOI · PMC12640178
Efficacy and safety of tranexamic acid in prevention of postpartum hemorrhage: a systematic review and meta-analysis of 18,649 patients [3]
Abstract reading summary — source excerpts
- Opening excerpt
- BackgroundIn this meta-analysis, we aimed to update the clinical evidence regarding the efficacy and safety of TXA in the prevention of PPH.
- Closing excerpt
- Further clinical trials are recommended to test its efficacy on high-risk populations.
- Interpretation limits
- Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (161 words)
BackgroundIn this meta-analysis, we aimed to update the clinical evidence regarding the efficacy and safety of TXA in the prevention of PPH.MethodsA literature search of PubMed, Scopus, Web of Science, Google Scholar, and Cochrane Library from inception until December 2022 was conducted. We included randomized controlled trials (RCTs) comparing TXA with a placebo among pregnant women. All relevant outcomes, such as total blood loss, the occurrence of nausea and/or vomiting, and changes in hemoglobin, were combined as odds ratios (OR) or mean differences (MD) in the meta-analysis models using STATA 17 MP.ResultsWe included 59 RCTs (18,649 patients) in this meta-analysis. For cesarean birth, TXA was favored over the placebo in reducing total blood loss (MD= -2.11 mL, 95%CI [-3.09 to -1.14], P ConclusionsThis meta-analysis suggested that TXA administration is effective among women undergoing cesarean birth or vaginal birth in lowering total blood loss and limiting the occurrence of PPH. Further clinical trials are recommended to test its efficacy on high-risk populations.
Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 38001439 · DOI · PMC10668444
Prevention and management of postpartum hemorrhage and hypertensive disorders of pregnancy: results from a 31-country rapid assessment [4]
Abstract reading summary — source excerpts
- Opening excerpt
- BackgroundPostpartum hemorrhage (PPH) and Hypertensive Disorders of Pregnancy (HDP) remain leading causes of maternal death.
- Closing excerpt
- ConclusionsRecommendations include prioritizing integration of updated global guidelines; improving uptake through professional education, mentorship, and supervision; quality assurance; strengthening procurement and supply chains to improve access, availability, and quality of essential drugs and commodities; expanding midwives' scope of practice; and improving private sector governance to enhance reporting of important MNH indicators.
- Interpretation limits
- Verbatim excerpts from the authors’ abstract; the closing excerpt may describe a finding, limitation or recommendation. Design, population, effect size and uncertainty have not been independently extracted or appraised. Read the complete abstract and linked paper before interpreting the findings.
Read complete abstract (394 words)
BackgroundPostpartum hemorrhage (PPH) and Hypertensive Disorders of Pregnancy (HDP) remain leading causes of maternal death. This multi-country survey asked key informants to assess uptake of evidence-based practices; determine their country's implementation of updated WHO global guidelines; and describe the private sector's role in PPH and HDP management. To our knowledge, this is among the few multi-country assessments to examine national implementation of updated WHO recommendations for PPH and HDP alongside private-sector engagement across three major regions-sub-Saharan Africa, South and Southeast Asia, and Latin America and the Caribbean-providing a comparative view to guide advocacy and programme planning.MethodsFrom January to May 2022, 35 countries in sub-Saharan Africa, South and Southeast Asia, and Latin America and the Caribbean were invited to complete a survey (based on 2011 and 2012 surveys) on PPH and HDP management across public and private sectors on PPH and HDP management. Using purposive sampling, country-based focal persons assembled national expert teams from public and private sectors in health policy, education, procurement/distribution, logistics, and information systems to complete the survey. Teams produced consensus-based answers by reviewing nationally available data and policy documents. The Study Team developed composite scores for key quantitative indicators and thematically analyzed qualitative data.ResultsThirty-one countries completed the survey. Despite significant progress since 2012, several gaps remain. Oxytocin was reported as regularly available in public facilities by 77% of countries and in private facilities by 84% of countries. Magnesium sulfate was reported as available in public facilities by 58% of countries and in private facilities by 45% of countries. Interventions like umbilical vein injection of oxytocin for retained placenta (13% of countries) and heat-stable carbetocin for PPH prevention (45% of countries) were less integrated in national policy guidelines. Since 2011, midwifery scope of practice remained stagnant for manual removal of placenta for PPH, diagnosing severe pre-eclampsia/eclampsia, and giving the loading dose of MgSO4, but 60% of countries in 2022 reported that newer PPH treatments (such as tranexamic acid) were included. Quality assurance systems for procurement of essential drugs and data reporting into national information systems were deficient, particularly in the private sector.ConclusionsRecommendations include prioritizing integration of updated global guidelines; improving uptake through professional education, mentorship, and supervision; quality assurance; strengthening procurement and supply chains to improve access, availability, and quality of essential drugs and commodities; expanding midwives' scope of practice; and improving private sector governance to enhance reporting of important MNH indicators.
Abstract reproduced from the open-access article under the recorded cc by licence; © the authors. PMID 42477613 · DOI · PMC13681778
Key reviews and meta-analyses
The most cited review-type papers among PubMed’s best-match results for this heading, listed with bibliographic details only. Follow the links for the full text and access terms.
- Research article Effect of timing of umbilical cord clamping of term infants on maternal and neonatal outcomes [5]
- Research article Postpartum Hemorrhage [6]
- Research article Maternal and neonatal complications of fetal macrosomia: systematic review and meta-analysis [7]
- Research article Patient blood management in obstetrics: prevention and treatment of postpartum haemorrhage. A NATA consensus statement [8]
- Research article Risk Factors for Atonic Postpartum Hemorrhage: A Systematic Review and Meta-analysis [9]
- Research article Uterine balloon tamponade for the treatment of postpartum hemorrhage: a systematic review and meta-analysis [10]
References
- Ker K, Sentilhes L, Shakur-Still H, Madar H, Deneux-Tharaux C, Saade G, et al.. Tranexamic acid for postpartum bleeding: a systematic review and individual patient data meta-analysis of randomised controlled trials. . 2024. PMID 39461793 · DOI · PMC12197804
- Ubom AE, Begum F, Ramasauskaite D, Nieto-Calvache AJ, Oguttu M, Nunes I, et al.. FIGO good practice recommendations on anemia in pregnancy, to reduce the incidence and impact of postpartum hemorrhage (PPH). . 2025. PMID 41031541 · DOI · PMC12640178
- Al-Dardery NM, Abdelwahab OA, Abouzid M, Albakri K, Elkhadragy A, Katamesh BE, et al.. Efficacy and safety of tranexamic acid in prevention of postpartum hemorrhage: a systematic review and meta-analysis of 18,649 patients. . 2023. PMID 38001439 · DOI · PMC10668444
- Sharma G, Noriega A, Somji A, Blockett A, Gomez P, Elliott L, et al.. Prevention and management of postpartum hemorrhage and hypertensive disorders of pregnancy: results from a 31-country rapid assessment. . 2026. PMID 42477613 · DOI · PMC13681778
- McDonald SJ, Middleton P, Dowswell T, Morris PS. Effect of timing of umbilical cord clamping of term infants on maternal and neonatal outcomes. Cochrane Database Syst Rev. 2013. PMID 23843134 · DOI · PMC6544813
- Bienstock JL, Eke AC, Hueppchen NA. Postpartum Hemorrhage. N Engl J Med. 2021. PMID 33913640 · DOI · PMC10181876
- Beta J, Khan N, Khalil A, Fiolna M, Ramadan G, Akolekar R. Maternal and neonatal complications of fetal macrosomia: systematic review and meta-analysis. Ultrasound Obstet Gynecol. 2019. PMID 30938004 · DOI
- Muñoz M, Stensballe J, Ducloy-Bouthors AS, Bonnet MP, De Robertis E, Fornet I, et al.. Patient blood management in obstetrics: prevention and treatment of postpartum haemorrhage. A NATA consensus statement. Blood Transfus. 2019. PMID 30865585 · DOI · PMC6476742
- Ende HB, Lozada MJ, Chestnut DH, Osmundson SS, Walden RL, Shotwell MS, et al.. Risk Factors for Atonic Postpartum Hemorrhage: A Systematic Review and Meta-analysis. Obstet Gynecol. 2021. PMID 33417319 · DOI · PMC8336570
- Suarez S, Conde-Agudelo A, Borovac-Pinheiro A, Suarez-Rebling D, Eckardt M, Theron G, et al.. Uterine balloon tamponade for the treatment of postpartum hemorrhage: a systematic review and meta-analysis. Am J Obstet Gynecol. 2020. PMID 31917139 · DOI
About this article
- Sources
- NLM Medical Subject Headings (definition, synonyms); NCBI PubMed (counts, identifiers); Europe PMC (open-access abstracts and citation counts).
- Verification
- Every reference was resolved against PubMed on 2026-11-04; title, year and DOI matched.
- Review state
- automated source verified; no human expert review has been recorded yet.
- Version
- 1, last updated 2026-11-04.
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Evidence strength
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