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Status unknownNCT02166060IvaCRTUpdated Jun 18, 2014

Ivabradine in Patients With an Unsatisfactory Percentage of Cardiac Resynchronization Therapy

A Phase 4 interventional study of Ivabradine in Heart Failure, sponsored by Medical University of Warsaw. Status unknown at 1 site in Poland. Per ClinicalTrials.gov, last updated 2014-06-18.

Sponsored by Medical University of Warsaw · Phase 4, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Jun 2014), so the status shown — last known as Not yet recruiting — may be out of date.
Phase
Phase 4
Study type
Interventional
Enrollment
60
Allocation
Not applicable
Sex
All
01

Study summary

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.

Read the detailed description

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.

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Conditions studied

  • Heart Failure

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03

In context

Heart Failure

5,701 studies on the registry are indexed under Heart Failure; 1,220 are open to participants now.

This study's planned enrollment of 60 is below the median of 72 across 3,736 interventional studies indexed under Heart Failure.

Browse Heart Failure studies →

Lead sponsor

Medical University of Warsaw is the lead sponsor of 316 studies on the registry; 87 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

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

Exclusion Criteria:

  • persistent atrial fibrillation/flutter
  • device associated ineffective resynchronization
  • contraindications to ivabradine
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Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
60 participants (estimated)

Study arms

  • Experimental
    Ivabradine

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

    Drug: Ivabradine

Interventions

  • DrugIvabradine

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

    Also known as: Procoralan

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What researchers measure

Primary outcomes

  1. Percentage of biventricular pacing >95%

    Time frame: 6 months

Secondary outcomes

  1. Percentage of biventricular pacing >98%

    Time frame: 6 months

  2. Time to first inappropriate shock

    Time frame: 6 months

  3. change of mean heart rate compared with baseline

    Time frame: 6 months

  4. Cardiovascular hospitalization

    Time frame: 6 months

  5. The change between baseline and final echocardiographic parameters

    Time frame: 6 months

  6. The assessment of quality of life (SF36)

    Time frame: 6 months

  7. The change between baseline and final NYHA class

    Time frame: 6 months

Other outcomes

  1. Number of participants with adverse events

    Time frame: 6 months

07

Study locations

1 site
  • 1st Department of Cariology of Medcial University of Warsaw
    Warsaw, Mazowieckie 02-097, Poland
    • Marcin Grabowski, MD · Principal investigator
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 18, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02166060
Lead sponsor
Medical University of Warsaw
Responsible party
Marcin Grabowski (PhD, Medical University of Warsaw) — Principal investigator
First posted
Jun 18, 2014
Start date
Aug 2014
Primary completion
Aug 2016 (estimated)
Completion
Oct 2016 (estimated)
Last update
Jun 18, 2014

Study contacts

Marcin Grabowski, PhD
Contact
marcin.grabowski@wum.edu.pl
+48 660 751 816
Lukasz Januszkiewicz, MD
Contact
lukasz.jan.januszkiewicz@gmail.com
+48 694 333 056
Marcin Grabowski, MD
study chair · Medical University of Warsaw

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Jun 2014. You cannot join it, but the record below documents what was studied.

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