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Hemorrhagic & Placental Safety of Antithrombotic Prophylaxis

Evaluation of antepartum and postpartum hemorrhage risk, placental abruption, and neonatal safety under antiplatelet and anticoagulant regimens.

23 sources ↓Last researched 2026-10-16

State of the Field: Hemorrhagic & Placental Safety of Antithrombotic Prophylaxis

Evaluation of antepartum and postpartum hemorrhage risk, placental abruption, and neonatal safety under antiplatelet and anticoagulant regimens. Grounded synthesis across 23 primary sources and 5 graded findings within Reproductive Medicine & Human Fertility → Advanced Maternal Age & Pregnancy After 40.

Synopsis · Executive Overview

Hemorrhagic & Placental Safety of Antithrombotic Prophylaxis is a canonical branch of the library within Natural & Life Sciences › Medicine, Health & Longevity › Reproductive Medicine & Human Fertility › Advanced Maternal Age & Pregnancy After 40 › Pre-eclampsia Pathophysiology, Biomarkers & Prophylaxis, investigating evaluation of antepartum and postpartum hemorrhage risk, placental abruption, and neonatal safety under antiplatelet and anticoagulant regimens. Spanning published milestones from 1978 to 2026, the indexed dossier currently comprises 23 primary sources and 5 graded findings.

Section I · Primary Literature & Evidence Synthesis

What the Peer-Reviewed Record Establishes

The primary research record in Hemorrhagic & Placental Safety of Antithrombotic Prophylaxis is stratified by study design so that meta-analyses and replicated randomised controlled trials (T1–T2) carry greater epistemic weight than observational cohorts (T3–T4) or preclinical laboratory work (T5). Leading graded findings establish the core empirical baseline: [T3] Coagulability increases during pregnancy, and thromboembolism can easily occur. [20] [T3] Antiphospholipid syndrome (APS) is a thrombo-inflammatory disease propelled by circulating autoantibodies that recognize cell surface phospholipids and phospholipid-binding proteins. [5]

Further clinical and mechanistic stratification across the literature demonstrates: [T3] Whether or not heparin prophylaxis during pregnancy increases bleeding risk is a crucial question. [16] [T3] OBJECTIVES: To assess the efficacy and safety of human fibrinogen concentrate (FCH) in patients with CFD. [14]

Section II · Mechanisms, Interventions & Subgroup Calibration

Comparative Evaluation of Levers & Theoretical Models

Within Reproductive Medicine & Human Fertility → Advanced Maternal Age & Pregnancy After 40, mechanistic and clinical evaluation in Hemorrhagic & Placental Safety of Antithrombotic Prophylaxis focuses on evaluation of antepartum and postpartum hemorrhage risk, placental abruption, and neonatal safety under antiplatelet and anticoagulant regimens. Primary publications in the current corpus span The Third Affiliated Hospital of Guangzhou Medical University, National University Hospital, Singapore, Thomas Jefferson University, Women's Hospital School Of Medicine Zhejiang University.

Section III · Historical Trajectory & Contested Frontiers

Evolution of the Field, Open Debates & Active Trials

Chronologically, the field evolved through key inflection points: in 1978, Human Fertility: The Basic Components. (In this innovative and comprehensive work, expanded by one-third for the English-language edition, Henri Leridon integrates biology and demography to investigate human fertility, both natural and controlled); in 2017, Aspirin versus Placebo in Pregnancies at High Risk for Preterm Preeclampsia (It is uncertain whether the intake of low-dose aspirin during pregnancy reduces the risk of preterm preeclampsia); in 2020, PREVENTION OF PREECLAMPSIA IN WOMEN WITH MULTIPLE PREGNANCY AFTER ASSISTED REPRODUCTION (Materials and methods: Clinical and laboratory prospective analysis of 54 cases of twins in women, treated from infertility with assisted reproductive technologies (ART), using the method of intracytoplasmic sperm injection (ICSI) and frozen embryos transfer, have been made); in 2026, Prevalence of Gestational Diabetes Mellitus and Its Associated Risk Factors Among Pregnant Women Attending a… (BackgroundGestational diabetes mellitus (GDM) is an increasingly important public health problem associated with adverse maternal and fetal outcomes).

Section IV · Evidentiary Gaps & Research Frontiers

Open Questions & Priorities for the Next Research Sweep

Methodological priorities and open empirical questions queued for the next research sweep across Hemorrhagic & Placental Safety of Antithrombotic Prophylaxis focus on resolving subgroup effect sizes, causal mechanisms, and long-term outcomes:

  • Deeper primary-source synthesis and systematic sub-branch expansion across Hemorrhagic & Placental Safety of Antithrombotic Prophylaxis.
  • Cross-disciplinary replication and empirical tests of frontier hypotheses within Hemorrhagic & Placental Safety of Antithrombotic Prophylaxis.

Evidence Hierarchy (Graded Claims)

  • T1Synthesis of trials
    0 (0%)
  • T2Randomised trial
    0 (0%)
  • T3Observational, large
    5 (100%)
  • T4Observational, small or case-based
    0 (0%)
  • T5Preclinical or mechanistic
    0 (0%)
  • T6Opinion, news or unverified
    0 (0%)
5 settled0 debated0 contested / frontier

Study Designs in Indexed Literature

  • Meta-analyses, Systematic Reviews & Guidelines4 (17%)
  • Randomised Controlled Trials (RCTs)5 (22%)
  • Prospective Cohorts & Clinical Registries8 (35%)
  • Primary Literature & Archive Records6 (26%)

Publication Timeline Velocity

Fig. 1 — Field Evidence Architecture & Publication Trajectory. Distribution of methodological study designs (23 indexed publications) and 5 extracted claims graded from T1 (meta-analyses and guidelines) to T6.
Primary Citations & Landmark Studies

Key Studies Anchoring This Monograph

Synthesis & Conclusions

State of the Field Conclusions

Taken together, the evidence record in Hemorrhagic & Placental Safety of Antithrombotic Prophylaxis (23 primary sources, 5 graded claims, highest certainty T3 — Observational, large) separates replicated high-tier findings from early-stage hypotheses. The 2 open research priorities detailed above guide the next autonomous literature and clinical trial sweep.

Key Quantitative Takeaways

  • [T3] Coagulability increases during pregnancy, and thromboembolism can easily occur.
  • [T3] Antiphospholipid syndrome (APS) is a thrombo-inflammatory disease propelled by circulating autoantibodies that recognize cell surface phospholipids and phospholipid-binding proteins.
  • [T3] Whether or not heparin prophylaxis during pregnancy increases bleeding risk is a crucial question.
  • [T3] OBJECTIVES: To assess the efficacy and safety of human fibrinogen concentrate (FCH) in patients with CFD.
  • Open frontier in Hemorrhagic & Placental Safety of Antithrombotic Prophylaxis: Deeper primary-source synthesis and systematic sub-branch expansion across Hemorrhagic & Placental Safety of Antithrombotic Prophylaxis.
Historical timeline (4 milestones, 1978–2026)
  1. 1978

    Human Fertility: The Basic Components.

    In this innovative and comprehensive work, expanded by one-third for the English-language edition, Henri Leridon integrates biology and demography to investigate human fertility, both natural and controlled.

  2. 2017

    Aspirin versus Placebo in Pregnancies at High Risk for Preterm Preeclampsia

    It is uncertain whether the intake of low-dose aspirin during pregnancy reduces the risk of preterm preeclampsia.

  3. 2020

    PREVENTION OF PREECLAMPSIA IN WOMEN WITH MULTIPLE PREGNANCY AFTER ASSISTED REPRODUCTION

    Materials and methods: Clinical and laboratory prospective analysis of 54 cases of twins in women, treated from infertility with assisted reproductive technologies (ART), using the method of intracytoplasmic sperm injection (ICSI) and frozen embryos transfer, have been made.

  4. 2026

    Prevalence of Gestational Diabetes Mellitus and Its Associated Risk Factors Among Pregnant Women Attending a…

    BackgroundGestational diabetes mellitus (GDM) is an increasingly important public health problem associated with adverse maternal and fetal outcomes.

Evidence by study design (5 findings across T1–T6)

Strongest support first. The bar beside each finding shows its grade.

Observational, large

  1. #1 Coagulability increases during pregnancy, and thromboembolism can easily occur.

    Antithrombotic Therapy for Pregnant Women (2013)

    Extracted from primary literature (2013).

  2. #2 Antiphospholipid syndrome (APS) is a thrombo-inflammatory disease propelled by circulating autoantibodies that recognize cell surface phospholipids and phospholipid-binding proteins.

    Antithrombotic Treatment in Antiphospholipid Syndrome: A Review (2024)

    Extracted from primary literature (2024).

  3. #3 Whether or not heparin prophylaxis during pregnancy increases bleeding risk is a crucial question.

    Definition of bleeding events in studies evaluating prophylactic ant… (2019)

    Extracted from primary literature (2019).

  4. #4 OBJECTIVES: To assess the efficacy and safety of human fibrinogen concentrate (FCH) in patients with CFD.

    Fibrinogen concentrate for bleeding in patients with congenital fibr… (2020)

    Extracted from primary literature (2020).

  5. #5 OBJECTIVES: Cesarean section is associated with an increased risk for venous thromboembolism (VTE).

    Efficacy and safety of venous thromboembolism prophylaxis with fonda… (2017)

    Extracted from primary literature (2017).

Node lineage & crossover disciplines

Parent lineage, active node, direct child sub-branches, and associated crossover disciplines across the Tree of Knowledge.

Hierarchy:
Natural & Life SciencesMedicine, Health & LongevityReproductive Medicine & Human FertilityAdvanced Maternal Age & Pregnancy After 40Hemorrhagic & Placental Safety of Antithrombotic ProphylaxisLeaf node (no child sub-branches yet)
+ Associated nodes:

Branches

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Primary indexed sources (23)

Primary scientific literature, systematic reviews, and clinical trial registrations indexed for this branch.

  1. Planned Delivery at 37 Versus 36 Weeks in Pregnancies With Placenta Previaand Accreta The Third Affiliated Hospital of Guangzhou Medical University, 2025, rct
  2. Antenatal Myo-inositol Supplementation in Pre-existing Diabetes National University Hospital, Singapore, 2025, rct
  3. Daily Aspirin vs Split Dosing in High-risk Pregnancies (DASH) Thomas Jefferson University, 2025, rct
  4. A RCT of Labor Induction at 39 Weeks in Low - Risk Women in China Women's Hospital School Of Medicine Zhejiang University, 2025, rct
  5. Antithrombotic Treatment in Antiphospholipid Syndrome: A Review — Carmine Siniscalchi, Francesca Futura Bernardi, Pierpaolo Di Micco et al. Immuno, 2024, expert opinion · DOI: 10.3390/immuno4040036
  6. Risk Factors and Pregnancy Outcomes of Antepartum Hemorrhage in Women with Placenta Previa — Do Hwa Im, Young Nam Kim, Eun Hye Cho et al. Reproductive Sciences, 2023, cohort, 20 citations · DOI: 10.1007/s43032-023-01191-2
  7. Fibrinolytic potential as a risk factor for postpartum hemorrhage — Daniel Gruneberg, Paula Braun, Herbert Schöchl et al. Frontiers in Medicine, 2023, expert opinion, 6 citations · DOI: 10.3389/fmed.2023.1208103
  8. Prospective study to determine the causes of Antepartum Haemorrhage and resulting postpartum hemorrhage — Sara Guleria, Himang Jharaik International Journal of Clinical Obstetrics and Gynaecology, 2023, cohort · DOI: 10.33545/gynae.2023.v7.i4a.1367
  9. Postpartum Hemorrhage Trends and Outcomes in the United States, 2000–2019 — Chiara M. Corbetta-Rastelli, Alexander Michael Friedman, Nasim C. Sobhani et al. Obstetrics and Gynecology, 2022, expert opinion, 167 citations · DOI: 10.1097/aog.0000000000004972
  10. Sonographic Parameters and Risk of Antepartum Hemorrhage in Asymptomatic Women With Placenta Previa: A Cohort Study Ain Shams University, 2022, cohort
  11. Prevalence and risk factors of severe postpartum hemorrhage: a retrospective cohort study — Chenning Liu, Fubing Yu, Yunzhe Xu et al. BMC Pregnancy and Childbirth, 2021, cohort, 170 citations · DOI: 10.1186/s12884-021-03818-1
  12. Neonatal thrombosis: risk factors and principles of prophylaxis — A. V. Vorobеv, Victoria O. Bitsadze, Jamilya Kh. Khizroeva et al. Obstetrics Gynecology and Reproduction, 2021, expert opinion, 5 citations · DOI: 10.17749/2313-7347/ob.gyn.rep.2021.233
  13. Endometrial Histopathological Evaluation in Antepartum Hemorrhage for Placental Etiology — Sarbeswar Mandal, Chaitali Karmakar, Masihon Murmu et al. Journal of South Asian Federation of Obstetrics and Gynaecology, 2021, rct · DOI: 10.5005/jp-journals-10006-1954
  14. Fibrinogen concentrate for bleeding in patients with congenital fibrinogen deficiency: Observational study of efficacy and safety for prophylaxis and treatment — Joseph L. Lasky, Jerome M. Teitel, Michael Wang et al. Research and Practice in Thrombosis and Haemostasis, 2020, cohort, 17 citations · DOI: 10.1002/rth2.12433
  15. Safety and Efficacy of Enoxaparin in Pregnancy: A Systematic Review and Meta-Analysis — Barry Frank Jacobson, Virendra Rambiritch, Dara Paek et al. Advances in Therapy, 2019, systematic review, 55 citations · DOI: 10.1007/s12325-019-01124-z
  16. Definition of bleeding events in studies evaluating prophylactic antithrombotic therapy in pregnant women: A systematic review and a proposal from the ISTH SSC — Bernard Tardy, Émilie Chalayer, Pieter Willem Kamphuisen et al. Journal of Thrombosis and Haemostasis, 2019, systematic review, 25 citations · DOI: 10.1111/jth.14576
  17. Risk factors for severe postpartum hemorrhage: a case-control study — Lill Trine Nyfløt, Irene Sandven, Babill Stray‐Pedersen et al. BMC Pregnancy and Childbirth, 2017, cohort, 313 citations · DOI: 10.1186/s12884-016-1217-0
  18. Efficacy and safety of venous thromboembolism prophylaxis with fondaparinux in women at risk after cesarean section — Ryuji Kawaguchi, Shoji Haruta, Hiroshi Kobayashi Obstetrics & Gynecology Science, 2017, cohort, 9 citations · DOI: 10.5468/ogs.2017.60.6.535
  19. Placental Pharmacology---Implications for Therapy in Pregnancy — Priya Bapat TSpace (University of Toronto), 2016, expert opinion
  20. Antithrombotic Therapy for Pregnant Women — Ḱazunori Toyoda Neurologia medico-chirurgica, 2013, guideline, 17 citations · DOI: 10.2176/nmc.53.526
  21. Neurodevelopment following fetal growth restriction and its relationship with antepartum parameters of placental dysfunction — Ahmet Baschat Ultrasound in Obstetrics and Gynecology, 2011, expert opinion, 299 citations · DOI: 10.1002/uog.9008
  22. An audit of primary post partum hemorrhage. — Bibi S, Danish N, Fawad A et al. Journal of Ayub Medical College, Abbottabad : JAMC, 2007, cohort, 6 citations
  23. Prevention of Rh alloimmunization. — Fung Kee Fung K, Eason E, Crane J et al. Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC, 2003, guideline, 47 citations · DOI: 10.1016/s1701-2163(16)31006-4