Pathophysiological Mechanisms of Hypertensive LVH:Optimising Regression

August 15, 2012 updated by: Dr JP Greenwood, University of Leeds
Uncontrolled high blood pressure can cause heart muscle 'thickening', and this increases the likelihood of complications and death. The high blood pressure explains some but not all of this increase in heart size. This study will investigate the other causes, and will measure the heart muscle 'thickness' very accurately using the latest and most accurate technique called cardiac magnetic resonance imaging (MRI). The best way to treat this heart thickening remains to be determined. We hope to be able to show that by specifically targeting the cause of heart muscle thickening we can reduce its occurrence more effectively than by other standard means of blood pressure treatment

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

42

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

  • United Kingdom
    • Wesst Yorkshire
      • Leeds, Wesst Yorkshire, United Kingdom, LS1 3EX
        • Leeds Teaching Hospital NHS Trust

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

25 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Recently diagnosed essential hypertension (within 6 months).
  • Age 25 to 80 years; Weight < 100kg.
  • Sinus rhythm without significant ventricular or atrial ectopy.

Exclusion Criteria:

  • Current angiotensin II receptor antagonist or ACE Inhibitor treatment.
  • Contra-indication to any of the protocol anti-hypertensive agents.
  • Angina requiring treatment with a Beta blocker or calcium antagonist
  • Any disease affecting the autonomic nervous system e.g. congestive cardiac failure, diabetes, neurological disease, malignancy, pregnancy.
  • Contraindication to MRI (pacemaker, intra-orbital debris, intra-auricular implants, intra-cranial clips, history of claustrophobia, inability to lie supine for 15 minutes etc).

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: 1
Neurohormonal stimulatory arm
Drug: Bendroflumethiazide 2.5mg OD; Amlodipine 10mg OD
Experimental: 2
Neurohormonal inhibitory arm
Drug: Valsartan 160mg OD; Moxonidine 400mcg OD

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
The primary outcome measure is decrease in LV mass as assessed by cardiac MRI compared between the two treatment groups.
Time Frame: 6 months
6 months

Collaborators and Investigators

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

Sponsor

University of Leeds

Collaborators

The Leeds Teaching Hospitals NHS Trust

Investigators

  • Principal Investigator: John P Greenwood, MBChB, PhD, Leeds University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

September 1, 2003

Primary Completion

December 7, 2022

Study Completion (Actual)

April 1, 2004

Study Registration Dates

First Submitted

August 17, 2007

First Submitted That Met QC Criteria

August 17, 2007

First Posted (Estimate)

August 20, 2007

Study Record Updates

Last Update Posted (Estimate)

August 16, 2012

Last Update Submitted That Met QC Criteria

August 15, 2012

Last Verified

August 1, 2012

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • PG/03/001

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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