NCT04755764

Effect of Labetalol, Atenolol, and Nifedipine on Maternal Hemodynamics Measured by ICG in Early Pregnancy

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

• Status: Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 60 (estimated)
• Sponsor: Marshall University · Academic / Other
• Sex: Female
• Age: 18 Years – 45 Years
• Healthy volunteers: Accepted

Summary

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.

Detailed description

When a patient presents to the Maternal Hypertension Center at Cabell Huntington Hospital, she will receive a non-invasive hemodynamic assessment via the NICaS system as per usual protocol. The NICaS system uses impedance cardiography which provides a reliable assessment of cardiovascular, respiratory, and fluid parameters. In typical practice, the vasodilator nifedipine is initiated for increased systemic vascular resistance and elevated cardiac output is treated with beta blockade (via either atenolol or labetalol). The medication to be given to each subject will be based on their hemodynamics. Specifically, nifedipine will be given for a mean arterial pressure \>100 and a beta blocker will be given for a cardiac output \>8 l/min. The patients will be asked to return in one week for repeat ICG measurement.

Conditions

• Systolic Hypertension
• Pregnancy Related
• Diastolic Hypertension
• Cardiac Output, Low
• Cardiac Output, High

Interventions

Type	Name	Description
DRUG	Labetalol	Beta blocker
DRUG	Atenolol	Beta blocker
DRUG	Nifedipine	Calcium channel blocker

Timeline

• Start date: 2021-03-03
• Primary completion: 2025-12-01
• Completion: 2025-12-01
• First posted: 2021-02-16
• Last updated: 2025-05-13

Locations

1 site across 1 country: United States