Iatrogenic Chronotropic Incompetence and Exercise Tolerance in Heart Failure

February 25, 2016 updated by: The Leeds Teaching Hospitals NHS Trust

Patients with CHF benefit from heart rate lowering, and the investigators have previously demonstrated that this does not adversely affect exercise tolerance. In a pacemaker population we also have shown that preventing heart rate lowering is detrimental in terms of symptoms and prognosis.

The aim of the study is to therefore to establish whether heart rate limitation in patients with heart failure has a negative impact on exercise capacity. If the investigators establish that this is not the case, physicians will be able to confidently prescribe heart rate lowering agents, and programme pacemakers to allow bradycardia without the concern that there will be detrimental effects of symptom.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Study Type

Interventional

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
      • Leeds, United Kingdom, LS2 9JT
        • Recruiting
        • Leeds Teaching Hospitals NHS Trust
        • Contact:

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Able to walk on a treadmill Able to provide consent Heart failure (or not) depending upon the arm. Patients with atrial fibrillation to have had an AV node ablation (or very slow response to AF)

Exclusion Criteria:

  • Cognitive impairment, known reaction to ivabradine, musculoskeletal issues limiting walking on a treadmill.

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: ivabradine
Exercise with ivabradine
Other: Exercise
Drug: ivabradine
Placebo Comparator: Placebo
Exercise with placebo
Drug: Placebo
Other: Exercise

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Examining the effects of iatrogenic CI on exercise capacity
Time Frame: 24 months
Each subject will undergo a full echocardiographic examination.We will assess LV systolic and diastolic function variables, mitral regurgitation, and pulmonary artery pressure.
24 months

Collaborators and Investigators

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

Sponsor

The Leeds Teaching Hospitals NHS Trust

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

July 1, 2013

Primary Completion (Actual)

July 1, 2015

Study Registration Dates

First Submitted

November 26, 2013

First Submitted That Met QC Criteria

March 12, 2014

First Posted (Estimate)

March 13, 2014

Study Record Updates

Last Update Posted (Estimate)

February 26, 2016

Last Update Submitted That Met QC Criteria

February 25, 2016

Last Verified

February 1, 2016

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CD13/10799

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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