Short-term Low-dose Low-molecular-weight Heparin to Prevent Postpartum Thrombosis
Switzerland9,200 participantsStarted 2025-10-15
Plain-language summary
The goal of this clinical trial is to evaluate the risk-benefit of a short-term treatment with a low-dose low-molecular-weight heparin (LMWH), in the postpartum period (after delivery). The main questions it aims to answer are:
* compared to no treatment, does short-term postpartum LMWH modify the risk of venous thromboembolism within 90 days of delivery?
* compared to no treatment, does short-term postpartum LMWH modify the risks of bleeding and wound complications? Participants will take low-dose LMWH for 7-10 days or no treatment, and will be followed for 90 days post-delivery.
Who can participate
Age range
18 Years
Sex
FEMALE
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria: postpartum women after delivery AND ≥1 major risk factor / ≥2 minor risk factors:
* Major risk factors: Emergency cesarean section ; Pre-pregnancy BMI ≥35kg/m2 ; Known low-risk thrombophilia (heterozygous factor V Leiden; heterozygous G20210 prothrombin mutation) ; Pre-eclampsia ; Pre-term delivery ; Peripartum systemic infection ; Intra-uterine growth restriction ; Pregnancy loss
* Minor risk factors: Age ≥35 years ; Pre-pregnancy BMI 30.0-34.9kg/m2 ; Current smoking ; Elective cesarean section ; Postpartum hemorrhage ; Antenatal immobility
Exclusion Criteria:
* ≥2 doses of postpartum LMWH
* Any indication for therapeutic anticoagulation
* A high-risk of postpartum VTE
* An increased bleeding risk
* A contra-indication to heparin
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.