How blood pressure medicines change heart and blood flow measures in early pregnancy
Looks at labetalol, atenolol and nifedipine effects on circulation in early pregnancy.
Key facts
- Who runs it
- Marshall University
- Where
- Huntington, United StatesSee the site
- Trial code
- Registry title
- Effect of Labetalol, Atenolol, and Nifedipine on Maternal Hemodynamics Measured by ICG in Early Pregnancy
- Status
- Recruiting
- People taking part
- 60 people, planned
- Started
- 3 Mar 2021
- Planned end
- Dec 2025
- Type of study
- Observational, 2 groups
- Treatments tested
- Labetalol
- Atenolol
- Nifedipine
- Record updated
- 13 May 2025
Who can take part
AI summary
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for women in early pregnancy (before 15 weeks) who attend the Maternal Hypertension Center at Cabell Huntington Hospital. It studies how three blood pressure drugs affect the heart and blood flow.
- Age
- 18 to 45 years old
- Sex
- Women only
- Disease stage
- Early pregnancy, before 15 weeks of gestation. The record lists high blood pressure and cardiac output problems as conditions.
Main reasons for not taking part
- Does not speak English
- Younger than 18 or older than 45 years
- Not willing or able to give consent
- Pregnancy longer than 15 weeks
This trial only enrols pregnant participants. The registry sentence this rests on: Gestational age prior to 15 weeks gestation
The registry criteria, word for word
Show all 9 criteriaShow less
Who can take part
- 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
Who cannot take part
- <18 years old or >45 years old
- Gestational age >15 weeks
- Non-English speaking patients, patients
- Not willing or able to provide consent
Check if you might fit
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 18 and 45 years old?
Where in United States
- Maternal Hypertension Center at Cabell Huntington HospitalHuntington, United StatesContact: Jesse Cottrell, MDTaking people
About the trial
What the trial wants to find out
The purpose of the research is to characterize the effect of labetalol, atenolol, and nifedipine on maternal hemodynamics early in pregnancy. Patients will be given medication based on their hemodynamics and asked to return for a repeat measurement.
The 2 groups in the trial
- Beta blockade
Beta blocker (labetalol or atenolol) will be given for a cardiac output \>8 l/min.
Treatment: Labetalol and Atenolol
- Nifedipine
Nifedipine will be given for a mean arterial pressure \>100.
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorData and sources
- Registry record
- Listed on ClinicalTrials.gov.
- Official title
- The Effect of Labetalol, Atenolol, and Nifedipine on Maternal Hemodynamics Measured by Impedance Cardiography in Early Pregnancy
- Plain-language title
- How blood pressure medicines change heart and blood flow measures in early pregnancyGenerated from the registry record. The registry title is the official one.
- AI summary
- From the trial's eligibility criteria. Read by machine on 12 November 2026.
- Fit questions
- Built from NCT04755764, who can take part
- Record updated
- 13 May 2025