NCT03667326 · Columbia University
Postpartum Low-Dose Aspirin and Preeclampsia
What this study is about
The purpose of this research study is to find out whether women with severe preeclampsia taking low-dose aspirin (LDA) for 3 weeks post-delivery will experience an improvement in endothelial function (measured as flow-mediated dilation - FMD) and severity of disease, as the effects of preeclampsia can persist postpartum.
View original scientific description
The purpose of this research study is to find out whether women with severe preeclampsia taking low-dose aspirin (LDA) for 3 weeks post-delivery will experience an improvement in endothelial function (measured as flow-mediated dilation - FMD) and severity of disease, as the effects of preeclampsia can persist postpartum. Women diagnosed with severe preeclampsia prior to delivery will be enrolled and randomized to receive either low-dose aspirin (81mg) or placebo to take daily for up to 3 weeks post-delivery. Exploratory objective includes healthy control postpartum patients without preeclampsia and not on LDA during pregnancy or postpartum in comparison with the primary study population affected by preeclampsia with severe features.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Singleton or Multiple gestation
- Maternal age \>= 18 years
- 20 0/7 weeks gestation or greater
- Severe Preeclampsia diagnosed prior to delivery
Exclusion criteria
- Aspirin use postpartum for other medical indication
- Lovenox, unfractionated heparin, or other anticoagulant use postpartum for an indication other than postoperative (in-house)
- Aspirin use within 7 days of planned initial FMD testing postpartum
- Hypersensitivity or allergy to Aspirin or other salicylates
- Hypersensitivity or allergy to nonsteroidal anti-inflammatory drugs (NSAIDs) - exception if taking LDA in pregnancy
- Nasal polyps
- Gastric or Duodenal ulcers, history of GI bleeding
- Severe hepatic dysfunction
- Bleeding disorders and diathesis
- Breastfeeding a newborn with low platelets (NAIT) For sub-study patients, inclusion and exclusion criteria will be the same, with the exception of diagnosis of severe preeclampsia prior to delivery (exclusion criterion for healthy controls group).
Where
- New York, New York
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jan 22, 2026 · Source of record for eligibility and locations