Clinical trial Recruiting at 2 sites Phase 2 Interventional Ages 18 and up Women only

Spironolactone to improve blood pressure after pregnancy-related hypertension

Official title: Spironolactone to Improve Pregnancy-Associated Hypertension Trajectories

Run by Massachusetts General Hospital · NCT07041281 · Data updated 2026-11-12

This trial will try taking spironolactone for three months after delivery to see if it lowers blood pressure and prevents heart changes in women who had preeclampsia or gestational hypertension and were overweight before pregnancy.

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Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexWomen only
Enrollment204 (estimated)
SponsorMassachusetts General Hospital
Academic / other
Locations3 sites (Boston, Massachusetts and 2 other locations)
StatusRecruiting
StartedOctober 16, 2025
Main results expectedDecember 2, 2027
Study endsMarch 2, 2029
Registry record updatedApril 3, 2026
Trial IDNCT07041281 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Women aged 18 or older who had gestational hypertension or preeclampsia, were overweight or obese before pregnancy (BMI ≥25 kg/m2), required antihypertensive medication within one week of delivery, and can provide informed consent are the ideal candidates.

Probably not a fit

Women with reduced left ventricular ejection fraction, significant kidney dysfunction or hyperkalemia, pre-pregnancy diabetes, BMI ≥50 kg/m2, known spironolactone hypersensitivity, or those planning pregnancy within 9 months are unlikely to be eligible or to benefit from this intervention.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a randomized, placebo-controlled Phase 2 trial giving spironolactone 25 mg once daily or matching placebo for three months beginning in the early postpartum period to women with gestational hypertension or preeclampsia and pre-pregnancy overweight/obesity. Participants must have required antihypertensive medication within one week of delivery and have no pre-pregnancy chronic hypertension. The study measures blood pressure and cardiac structure/function out to nine months postpartum to detect durable effects on blood pressure trajectories and cardiac remodeling. Safety monitoring includes checks of potassium and kidney function and exclusion criteria to reduce risk from mineralocorticoid receptor blockade.

Why it matters

Potential benefit: If successful, a short course of spironolactone after delivery could lower postpartum blood pressure and reduce the chance of developing chronic hypertension and adverse cardiac remodeling in these women.

How similar studies have gone: Preclinical data and the POP-HT trial support the importance of early postpartum blood pressure control and a role for mineralocorticoid receptor pathways, but randomized trials of postpartum spironolactone for this purpose are limited, making this approach relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Females aged ≥18 years
* HDP (gestational hypertension or preeclampsia) without pre-pregnancy chronic hypertension
* BMI ≥25 kg/m2 prior to pregnancy or in the first trimester
* Requirement for antihypertensive medication within one week of delivery
* Ability to provide informed consent

Exclusion Criteria:

* LV ejection fraction \<50% or history of clinical heart failure with reduced or preserved ejection fraction
* Hypertrophic or other genetic cardiomyopathy
* Hyperkalemia: potassium \>5.3 mEq/L
* BMI at screening ≥50 kg/m2
* Pre-pregnancy diabetes
* Estimated glomerular filtration rate (eGFR) \<60mL/min/1.73 m2
* Cirrhosis
* Primary aldosteronism
* Intention to become pregnant within 9 months
* Active substance abuse
* Other serious medical illnesses or concerns about protocol adherence/ mortality within 9 months
* Participation in another interventional clinical study
* Hypersensitivity to spironolactone
* Addison's disease
* Concomitant use of eplerenone or finerenone

Where it's running

  • Massachusetts General Hospital
    Boston, Massachusetts, United States
    Recruiting
  • Brigham and Women's Hospital
    Boston, Massachusetts, United States
    Recruiting
  • University of Pittsburgh Magee-Womens Hospital
    Pittsburgh, Pennsylvania, United States
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.