Comparing blood pressure medications for postpartum hypertension

Oral Nifedipine Versus Intravenous Labetalol for Postpartum (PP) Hypertensive Emergency: A Randomized Clinical Trial (RCT)

Phase 4 Interventional Columbia University · NCT05139238

This study is testing which of two blood pressure medications works better for new moms with dangerously high blood pressure after giving birth.

Quick facts

PhasePhase 4
Study typeInterventional
Enrollment104 (estimated)
Ages18 Years and up
SexFemale
SponsorColumbia University Academic / other
Locations1 site (New York, New York)
Trial IDNCT05139238 on ClinicalTrials.gov

What this trial studies

This study aims to determine the effectiveness of two blood pressure medications, intravenous labetalol and oral nifedipine, in treating severely elevated blood pressure in women who have recently given birth. Women experiencing hypertensive emergencies in the postpartum period will be prospectively enrolled and randomly assigned to receive one of the two medications. The goal is to identify which treatment is superior in managing severe hypertension to reduce maternal morbidity and mortality.

Who should consider this trial

Good fit: Ideal candidates are women who are within 6 weeks postpartum and have severe hypertension defined as a systolic blood pressure of 160 mm Hg or higher.

Not a fit: Patients with known contraindications to either medication or those who have received either treatment within the last 24 hours may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved treatment protocols for postpartum hypertension, enhancing maternal health outcomes.

How similar studies have performed: Other studies have explored treatments for postpartum hypertension, but this specific comparison of labetalol and nifedipine in a randomized setting is novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion criteria

* Patients admitted to labor and delivery (L\&D) with blood pressure (BP) in severe range, defined as a systolic ≥160 mm Hg and/or diastolic ≥110 mm Hg
* Postpartum, immediately to 6 weeks postpartum
* With a prior diagnosis of chronic hypertension (not on medication) or hypertensive disorder of pregnancy

Exclusion criteria

* They may not have previously had exposure to either study medication within the previous 24-hour period.
* Patients with a known atrial-ventricular heart block or moderate to severe bronchial asthma will be excluded, or other contraindication to receiving either study medication

Where this trial is running

New York, New York

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.
Conditions Postpartum Pregnancy-Induced HypertensionPostpartum PreeclampsiaPregnancy-Induced Hypertension in PostpartumHypertensive EmergencyHypertensionPostpartumPreeclampsia
Last reviewed 2026-06-13 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.