Ivabradine in Patients With an Unsatisfactory Percentage of Cardiac Resynchronization Therapy

NCT ID: NCT02166060

Last Updated: 2014-06-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

PHASE4

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-08-31

Study Completion Date

2016-10-31

Brief Summary

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The purpose of this study is to determine the role of ivabradine in cardiac resynchronization recipients with an unsatisfactory percentage biventricular pacing.

The study protocol 60 patients with heart failure NYHA (New York Heart Association) II-IV treated with optimal medical therapy as clinically indicated who received CRT-D device more than 3 months ago. Patients with biventricular pacing \<95% will and heart rate \<70 at rest and \>50% of heart rate in device memory \>70 will receive ivabradine. The minimal follow-up of patients in the study will be at least six months.

Detailed Description

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Approximately 30% of CRT recipients do not respond to therapy. One of the causes ot that is unsatisfactory percentage of biventricular pacing. Patients may loose biventricular pacing because of inadequate sinus tachycardia.

Ivabradine may prevent inadequate sinus tachycardia and improve quality of live of CRT recipients.

According to current guidelines ivabradine is recommended in patients with symptomatic heart failure with heart rate at rest \>70.

The hypothesis of this study is that ivabradine may increase percentage of biventricular pacing in CRT recipients who have unsatisfactory percentage of biventricular pacing and \>50% of heart rate in device memory \>70.

Conditions

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Heart Failure

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Ivabradine

Ivabradine 5 mg twice a day or 7,5 mg twice a day

Group Type EXPERIMENTAL

Ivabradine

Intervention Type DRUG

Ivabradine 5 mg twice a day or 7,5 mg twice a day

Interventions

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Ivabradine

Ivabradine 5 mg twice a day or 7,5 mg twice a day

Intervention Type DRUG

Other Intervention Names

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Procoralan

Eligibility Criteria

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Inclusion Criteria

* heart failure NYHA II-IV
* left ventricular ejection fraction =\<35%
* CRT-D implanted over 3 months ago
* optimal CRT-D parameters
* biventricular pacing \<95% despite the optimal parameters of the device
* optimal pharmacotherapy with the highest well-tolerated beta-adrenolytic dosage
* heart rate at rest below 70 bpm
* over 50% of heart rhythm over 70 bpm at interrogation with the device

Exclusion Criteria

* persistent atrial fibrillation/flutter
* device associated ineffective resynchronization
* contraindications to ivabradine
Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Medical University of Warsaw

OTHER

Sponsor Role lead

Responsible Party

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Marcin Grabowski

PhD

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Marcin Grabowski, MD

Role: STUDY_CHAIR

Medical University of Warsaw

Locations

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1st Department of Cariology of Medcial University of Warsaw

Warsaw, Masovian Voivodeship, Poland

Site Status

Countries

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Poland

Central Contacts

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Marcin Grabowski, PhD

Role: CONTACT

+48 660 751 816

Lukasz Januszkiewicz, MD

Role: CONTACT

+48 694 333 056

Other Identifiers

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IvaCRT KB/111/2014

Identifier Type: -

Identifier Source: org_study_id

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