Comparison of Intravenous Labetalol and Intravenous Hydralazine in Severe Preeclampsia

May 1, 2026 updated by: Muhammad Aamir Latif

Comparison of the Efficacy of Intravenous Labetalol and Intravenous Hydralazine for the Treatment of Hypertension in Patients With Severe Preeclampsia.

Due to limited data regarding preeclampsia from the local population, the debate is still ongoing in the study setting. Hence, the current study was planned to compare the efficacy of labetalol and hydralazine for the treatment of hypertension in patients with severe preeclampsia.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

As preeclampsia is associated with high perinatal mortality and morbidity, the choice of a better antihypertensive in pregnancy is still debatable. The findings of this study would help evaluate the more efficacious drug between intravenous labetalol and intravenous hydralazine in the management of severe preeclampsia. Based on this empirical evidence, practical recommendations can be developed for routine practice guidelines regarding the optimal drug choice between the two for treating severe preeclampsia and eventually to reduce perinatal mortality and morbidity for both the mother and fetus.

Study Type

Interventional

Enrollment (Actual)

132

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Pakistan
    • Punjab Province
      • Bahawalpur, Punjab Province, Pakistan, 63100
        • Sadiq Abbasi Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Pregnant women
  • Both primiparous and multiparous women
  • Aged 20-35 years
  • Gestational age ≥20weeks (assessed on last menstrual period)
  • With severe preeclampsia

Exclusion Criteria:

  • Known allergy to hydralazine or labetalol
  • Deranged liver function tests due to any other cause
  • Women with pre-existing hypertension systolic blood pressure ≥130 mmHg, diastolic blood pressure ≥80 mmHg
  • Patients receiving more than one antihypertensive drug since admission
  • Women with chronic renal failure

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Group-A
Patients were given a 20 mg bolus dose of labetalol in 2 minutes, and blood pressure was checked after 20 minutes; if not effective, then a 40 mg dose of labetalol was given. If still no effect was seen, then 80 mg was given every 20 minutes up to a maximum dose of 300 mg, and every time blood pressure was checked after 20 minutes.
Drug: Labetalol
Patients were given a 20 mg bolus dose of labetalol in 2 minutes, and blood pressure was checked after 20 minutes; if not effective, then a 40 mg dose of labetalol was given. If still no effect was seen, then 80 mg was given every 20 minutes up to a maximum dose of 300 mg, and every time blood pressure was checked after 20 minutes.
Experimental: Group-B
Patients were given intravenous hydralazine, 5 mg in a bolus dose, then repeated every 20 minutes as needed up to five doses; a maximum of 25 mg was given.
Drug: Hydralazine
Patients were given intravenous hydralazine, 5 mg in a bolus dose, then repeated every 20 minutes as needed up to five doses; a maximum of 25 mg was given.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Treatment efficacy
Time Frame: 6 hours
The efficacy was labeled as 'yes' if a blood pressure of 140/90 was achieved, frequency of patients was noted.
6 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Muhammad Aamir Latif

Investigators

  • Principal Investigator: Namra Rasheed, Sadiq Abbasi Hospital, Bahawalpur, Pakistan
  • Study Director: Saba Nadeem, FCPS, Sadiq Abbasi Hospital, Bahawalpur, Pakistan

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 1, 2024

Primary Completion (Actual)

October 31, 2024

Study Completion (Actual)

October 31, 2024

Study Registration Dates

First Submitted

May 1, 2026

First Submitted That Met QC Criteria

May 1, 2026

First Posted (Actual)

May 7, 2026

Study Record Updates

Last Update Posted (Actual)

May 7, 2026

Last Update Submitted That Met QC Criteria

May 1, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Dr-Namra-QAMC

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Data can be shared on a reasonable request.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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