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NCT01169493 · ClinicalTrials.gov registry record · NA
Pacing Affects Cardiovascular Endpoints in Patients With Right Bundle-Branch Block (The PACE-RBBB Trial)
A NA study, sponsored by Duke University.
- Terminated
- Registry status
- NA
- Development phase
- 16
- Enrollment target
NCT01169493: Clinical Trial NA study, sponsored by Duke University.
NCT01169493 is a NA study that was terminated before completion, run by Duke University. The registered enrollment target is 16 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (99% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT01169493, a NA study, was terminated before completion, sponsored by Duke University.
- TERMINATED
- Registry status
- NA
- Development phase
- 16 participants
- Enrollment target
Study Summary
Heart failure (HF) affects 5 million Americans and is responsible for more health-care expenditure than any other medical diagnosis. Approximately half of all HF patients have electrocardiographic prolongation of the QRS interval and ventricular dyssynchrony, a perturbation of the normal pattern of ventricular contraction that reduces the efficiency of ventricular work. Ventricular dyssynchrony is directly responsible for worsening HF symptomatology in this subset of patients. Resynchronization of ventricular contraction is usually achieved through simultaneous pacing of the left and right ventricles using a biventricular (BiV) pacemaker or implantable cardioverter-defibrillator. Clinical trial evidence supporting the use of BiV pacing in patients with prolonged QRS duration was obtained almost exclusively in patients with a left bundle-branch block (LBBB) electrocardiographic pattern. Recent evidence suggests that resynchronization of ventricular contraction in patients with LBBB can be obtained by univentricular left ventricular pacing with equal or superior clinical benefits compared to BiV pacing. Animal studies suggest that ventricular resynchronization can be obtained in subjects with right bundle-branch block (RBBB) through univentricular right ventricular pacing. No clinical trial evidence exists to support the use of BiV pacing in patients with RBBB. Thousands of patients with symptomatic HF and RBBB currently have univentricular ICDs in place for the prevention of sudden cardiac death. Most of these devices are currently programmed to avoid RV pacing. We aim to determine if ventricular resynchronization delivered through univentricular RV pacing improves symptoms in patients with RBBB and moderate to severe HF who have previously undergone BiV ICD implantation for symptomatic heart failure. We further aim to determine if ventricular resynchronization improves myocardial performance and ventricular geometry as detected by echocardiographic measures and qual
Interventions
- DEVICE VVI-40
- DEVICE RV DDD-40
- DEVICE BiV DDD-40
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 16 participants |
| Start Date | 2011-01 |
| Est. Completion | 2014-08 |
| Phase | NA |
Why NCT01169493 stopped before completion
NCT01169493 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 16 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (99% lower).
The record links to 0 conditions, and to 3 interventions - of which VVI-40 is the first listed.
NCT01169493 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT01169493 about?
NCT01169493 is a clinical study titled "Pacing Affects Cardiovascular Endpoints in Patients With Right Bundle-Branch Block (The PACE-RBBB Trial)". Heart failure (HF) affects 5 million Americans and is responsible for more health-care expenditure than any other medical diagnosis. Approximately half of all HF patients have electrocardiographic prolongation of the QRS interval and ventricular dyssynchrony, a perturbation of the normal pattern of ...
What is the current status of trial NCT01169493?
This trial is currently terminated. It is a NA study. The enrollment target is 16 participants. The study started on 2011-01. Estimated completion is 2014-08.
What interventions are being tested in trial NCT01169493?
The interventions under investigation include: VVI-40 (DEVICE), RV DDD-40 (DEVICE), BiV DDD-40 (DEVICE).
Who is sponsoring clinical trial NCT01169493?
This trial is sponsored by Duke University, which has 1,725 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT01169493's enrollment target sits among peer trials
16 1871st of 2000 higher than 120 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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