Investigating blood clotting changes during childbirth

The Incidence of Hyperfibrinolysis During Vaginal Delivery and Cesarean Section

Medical University of Graz · NCT05975112

This study is testing how often a bleeding condition called hyperfibrinolysis happens during childbirth to see if it can lead to serious bleeding and whether certain treatments can help prevent it.

Quick facts

Study typeObservational
Enrollment780 (estimated)
Ages18 Years and up
SexFemale
SponsorMedical University of Graz (other)
Locations1 site (Graz, Styria)
Trial IDNCT05975112 on ClinicalTrials.gov

What this trial studies

This observational study aims to assess the incidence of hyperfibrinolysis, a condition that can lead to excessive bleeding, during vaginal deliveries and cesarean sections. By analyzing coagulation changes immediately after childbirth, the study seeks to understand how often hyperfibrinolysis occurs without resulting in postpartum hemorrhage. The research involves collecting blood samples from participants to conduct various coagulation tests. The findings could inform the use of prophylactic treatments like tranexamic acid to prevent complications related to blood loss during delivery.

Who should consider this trial

Good fit: Ideal candidates include women aged 18 and older with singleton or multiple pregnancies who are willing to participate and provide a blood sample.

Not a fit: Patients who may not benefit include those under 18, those undergoing emergency cesarean sections, or those with a history of coagulation disorders.

Why it matters

Potential benefit: If successful, this study could lead to improved prevention strategies for postpartum hemorrhage, enhancing maternal safety during childbirth.

How similar studies have performed: While the use of tranexamic acid has shown success in other medical contexts, this specific investigation into hyperfibrinolysis during childbirth is novel and has not been extensively studied.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Women aged 18 years and older with a singleton or multiple pregnancy who volunteer for the present study and give one blood sample of 6ml

Exclusion Criteria:

1. Age \< 18 years
2. Emergency cesarean section
3. History of thrombocytopathy or coagulation disorders
4. Therapy with drugs that influence thrombocyte function and coagulation (ASS less than 5 days ago, clopidogrel, prasugrel, ticagrelor or similar)
5. Lack of consent

Where this trial is running

Graz, Styria

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Hyperfibrinolysis, Cesarean Section Complications, Coagulation Defect, Bleeding, Peripartum Haemorrhage

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.