Effects of blood pressure medications on pregnant women

The Effect of Labetalol, Atenolol, and Nifedipine on Maternal Hemodynamics Measured by Impedance Cardiography in Early Pregnancy

Observational Marshall University · NCT04755764

This study tests how different blood pressure medications affect pregnant women’s heart and blood flow in early pregnancy.

Quick facts

Study typeObservational
Enrollment60 (estimated)
Ages18 Years to 45 Years
SexFemale
SponsorMarshall University Academic / other
Locations1 site (Huntington, West Virginia)
Trial IDNCT04755764 on ClinicalTrials.gov

What this trial studies

This research aims to evaluate how labetalol, atenolol, and nifedipine influence maternal hemodynamics during early pregnancy. Patients visiting the Maternal Hypertension Center will undergo a non-invasive hemodynamic assessment using the NICaS system. Based on their hemodynamic measurements, patients will receive specific medications to manage their blood pressure and cardiac output. Follow-up assessments will occur one week later to monitor changes in hemodynamics.

Who should consider this trial

Good fit: Ideal candidates are English-speaking pregnant women aged 18-45 with a gestational age of less than 15 weeks presenting with hypertension.

Not a fit: Patients who are non-English speaking, under 18 or over 45 years old, or those with a gestational age greater than 15 weeks will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved management of hypertension in pregnant women, enhancing maternal and fetal health outcomes.

How similar studies have performed: Other studies have shown success in managing hypertension in pregnancy with similar medications, indicating a promising approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients presenting to Maternal Hypertension Center at Cabell Huntington Hospital
* English speaking
* 18-45 years old.
* Willing to provide informed consent
* Gestational age prior to 15 weeks gestation

Exclusion Criteria:

* Non-English speaking patients, patients
* \<18 years old or \>45 years old
* Not willing or able to provide consent
* Gestational age \>15 weeks

Where this trial is running

Huntington, West Virginia

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 Systolic HypertensionPregnancy RelatedDiastolic HypertensionCardiac Output, LowCardiac Output, High
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.