Using aspirin to prevent complications in pregnant women with chronic hypertension
Official title: Chronic Hypertension and Acetyl Salicylic Acid in Pregnancy, a Multicenter Prospective Randomized Double-blind Placebo-controlled Trial.
Run by Centre Hospitalier Intercommunal Creteil · NCT04356326 · Data updated 2026-11-12
This study is testing whether taking low-dose aspirin during pregnancy can help prevent serious complications for women with chronic high blood pressure and their babies.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | Women only |
| Enrollment | 500 (estimated) |
| Sponsor | Centre Hospitalier Intercommunal Creteil Academic / other |
| Locations | 20 sites (Bordeaux and 19 other locations) |
| Status | Recruiting |
| Started | February 15, 2021 |
| Main results expected | February 28, 2029 |
| Study ends | February 2030 |
| Registry record updated | June 12, 2026 |
| Trial ID | NCT04356326 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates for this study are pregnant women between 10 and 19 weeks of gestation with a diagnosis of chronic hypertension.
✕Probably not a fit
Patients with medical histories requiring anticoagulation or those with significant proteinuria or active bleeding may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This clinical trial evaluates the effectiveness of acetylsalicylic acid (aspirin) at a dosage of 150 mg per day, administered before 20 weeks of gestation, in preventing maternal and fetal complications in pregnant women suffering from chronic hypertension. Chronic hypertension can lead to severe complications such as preeclampsia, intrauterine growth restriction, and even perinatal death. The study aims to provide evidence for the use of low-dose aspirin as a preventive measure, addressing a significant gap in treatment options for this high-risk population. Participants will be randomly assigned to receive either aspirin or a placebo to assess the outcomes.
Why it matters
Potential benefit: If successful, this study could significantly reduce the incidence of severe complications in pregnant women with chronic hypertension, improving maternal and fetal health outcomes.
How similar studies have gone: Previous studies have suggested potential benefits of low-dose aspirin in similar populations, but this specific approach is being rigorously tested for the first time in this context.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Pregnant patient between 10 and 19 weeks of gestation + 6 days * Chronic hypertension, whether treated or not, know before pregnancy or diagnosed before randomization * Singleton pregnancy * Signed the written informed consent * Affiliation to social security Exclusion Criteria: * ---Medical history requiring anticoagulation (antiphospholipid syndrome, deep vein thromboembolic disease, pulmonary embolism, atherothrombosis, patient with mechanical heart valves), * Patient receiving aspirin for another indication outside pregnancy, * Patient with significant proteinuria (\> 300mg/24 hours or a proteinuria/creatininuria ratio ≥ 30mg/mmol), * Active bleeding, * History of severe PE with delivery \< 34 weeks of gestation, * Hypersensitivity to salicylates such as aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs), * Platelet count lower than 100,000 cells/microliter (dosage less than 6 months old), * Hemostasis disorders, including hemophilia (with thrombocytopenia) * Any constitutional or acquired hemorrhagic disease, (including digestive hemorrhages, history of hemorrhagic stroke and thrombocytopenia * Human immunodeficiency virus, or hepatitis B virus, or hepatitis C virus positive serum, * Patient included in another interventional study which could interfere with the results of the study, * Age \<18 years old, * Women under the protection of justice, * Patients with psychiatric follow-up, poor understanding of French or cognitive problems, * Duodenal ulcer, * Severe renal impairment, * Severe hepatic insufficiency, * Severe cardiac impairment, * Gout, * Patients with known glucose-6-phosphate dehydrogenase deficiency,
Where it's running
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CHU Bordeaux
Bordeaux, France Recruiting -
CHU Antoine Béclère, AP-HP
Clamart, France Recruiting -
Hôpital Louis Mourier, AP-HP
Colombes, France Recruiting -
Centre Hospitalier Intercommunal de Créteil
Créteil, France Recruiting -
CHU Dijon
Dijon, France Recruiting -
CHU Bicêtre, AP-HP
Le Kremlin-Bicêtre, France Recruiting
Show 14 more locations
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CHU Lyon
Lyon, France Recruiting -
CHU Nantes
Nantes, France Recruiting -
CHU Cochin- Port Royal, AP-HP
Paris, France Recruiting -
CHU Robert Débré, AP-HP
Paris, France Recruiting -
CHU Tenon
Paris, France Recruiting -
Hôpital Trousseau, AP-HP
Paris, France Recruiting -
CH Poissy
Poissy, France Recruiting -
CHU St Etienne
Saint-Etienne, France Recruiting -
CHU Caen
Caen, France Withdrawn -
CHRU Lille
Lille, France Not yet recruiting -
Hôpital St Joseph
Marseille, France Withdrawn -
CHRU Nancy
Nancy, France Withdrawn -
CHU Toulouse
Toulouse, France Not yet recruiting -
CHU Tours
Tours, France Withdrawn
Study contacts
- Study coordinator: Edouard LE CARPENTIER
- Email: Edouard.Lecarpentier@chicreteil.fr
- Phone: 01 45 17 50 00
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.