- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05015660
Conduction System Pacing With Left Bundle Branch Pacing as Compared to Standard Right Ventricular Pacing
March 18, 2024 updated by: Jacqueline Joza, McGill University Health Centre/Research Institute of the McGill University Health Centre
LEFT Bundle Pacing vs Standard Right Ventricular Pacing for Heart Failure
High burden right ventricular (RV) pacing has been shown to increase cardiovascular mortality, incidence of heart failure (HF), worsen left ventricular (LV) function and accelerate the development of atrial fibrillation (AF).
High percentage ventricular pacing and wider paced QRS in the setting of normal baseline LV ejection fractions have consistently been shown to be independent risk factors for pacing-induced cardiomyopathy.
Left bundle branch pacing (LBBP) has emerged as a potential alternative pacing mechanism that may avoid LV dyssynchrony and pacing-induced LV dysfunction by mimicking native electrical conduction.
Study Overview
Status
Recruiting
Conditions
Detailed Description
We hypothesize that in patients with high degree AV block with anticipated ventricular pacing >90%, and an EF >35% patients undergoing LBBP will demonstrate a significantly lower number of the primary composite endpoint of cardiovascular death, heart failure events, and change in LVESVi as compared to standard RV pacing.
Echos will be performed at baseline, 12, 24, and 36 months.
NTproBNPs are performed at baseline and follow-up.
There will be a core echo lab, and blinded adjudication of ECGs and events.
Study Type
Interventional
Enrollment (Estimated)
1300
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 Contact
- Name: Jacqueline Joza, MD MSc
- Phone Number: 43158 514-934-1934
- Email: jacqueline.joza@gmail.com
Study Contact Backup
- Name: Fiorella Rafti, PhD
- Phone Number: 514-934-1934
- Email: fiorella.rafti@mail.mcgill.ca
Study Locations
-
-
Quebec
-
Montreal, Quebec, Canada, H3Y2T6
- Recruiting
- McGill University Health Centre-Research Institute
-
Contact:
- Fiorella Rafti, PhD
- Phone Number: 514-934-1934
- Email: fiorella.rafti@mail.mcgill.ca
-
Contact:
- Jacqueline Joza
- Phone Number: 43158 514-934-1934
- Email: jacqueline.joza@gmail.com
-
Principal Investigator:
- Jacqueline Joza
-
Principal Investigator:
- Atul Verma
-
-
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
Description
Inclusion Criteria:
- Age ≥ 18 years
- Patients with an ejection fraction of >35%
Patients with an indication for ventricular pacing and high-degree atrioventricular block where the degree of anticipated RV pacing is >90% including:
- Third degree AV block
- Symptomatic or asymptomatic second-degree AV block
- First degree AV block ≥ 280ms with a narrow QRS, or ≥ 240ms with an intraventricular delay (QRS duration ≥120ms)
- Echocardiogram within the last 3 months, with ability to have DICOM images
Exclusion Criteria:
- Indication for an implantable cardioverter defibrillator
- Presence of a mechanical tricuspid valve
- Any prior attempt at implantation of an ICD, CRT, HBP, or LBBP
- Lack of capacity to consent
- Other serious medical condition with life expectancy of <2 years
- Pregnancy
- Patients in whom the conduction system abnormality is expected to be transient or recover over time
- Patients with permanent atrial fibrillation
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: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Right ventricular pacing
|
Active fixation lead (standard)
|
Experimental: left bundle branch pacing
|
Implantation of a left bundle branch pacing lead via sheath, to perform selective or non-selective pacing
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Time to cardiovascular death
Time Frame: 36 months
|
Clinical
|
36 months
|
Worsening LV end systolic vloume index at 2 years
Time Frame: 24 months
|
Defined as a 15% increase from baseline on the two-year echo
|
24 months
|
Time to first heart failure event
Time Frame: 36 months
|
Defined as: (i) Emergency department (ED) visits or hospitalization for HF (requiring signs and symptoms consistent with congestive heart failure (CHF) that is responsive to oral or parenteral medications); (ii) intensification of therapy (intravenous diuretic therapy on an outpatient basis); or (iii) indication for device upgrade to CRT due to deteriorating LV function defined as an absolute decline in LVEF ≥ 10% from baseline and an LVEF ≤ 40%
|
36 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Cardiovascular mortality
Time Frame: 24 months
|
CV-related
|
24 months
|
New visit for Heart Failure
Time Frame: 24 months
|
Heart failure visit is defined as: i) Emergency department visit or hospitalization for signs and symptoms of HF that is responsive to oral or intravenous diuretics ii) intensification of therapy defined as outpatient intravenous diuretic therapy, and iii) device upgrade to cardiac resynchronization therapy.
|
24 months
|
Total mortality
Time Frame: 24 months
|
Total mortality
|
24 months
|
Change in left ventricular ejection fraction
Time Frame: 24 months
|
Echo parameter, change from baseline to 24 months
|
24 months
|
Change in NTproBNP level
Time Frame: 24 months
|
From baseline to 24 months
|
24 months
|
Atrial fibrillation progression
Time Frame: 24 months
|
Atrial fibrillation burden as noted on pacemaker
|
24 months
|
Development of new tricuspid regurgitation
Time Frame: 24 months
|
More than mild TR from baseline
|
24 months
|
Presence of Mitral regurgitation
Time Frame: 24 months
|
Progression/Development from baseline
|
24 months
|
Change in Lead parameter
Time Frame: 24 months
|
stability of impedance, sensing, thresholds
|
24 months
|
Quality of Life Improvement
Time Frame: Evaluated at 1, 12, and 24 months, measure as compared to baseline
|
Health related quality of life score: Short Form 12
|
Evaluated at 1, 12, and 24 months, measure as compared to baseline
|
Safety of procedure and long-term safety
Time Frame: 24 months
|
Procedural and long-term safety of left bundle pacing
|
24 months
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
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 (Actual)
September 1, 2022
Primary Completion (Estimated)
July 1, 2026
Study Completion (Estimated)
July 1, 2027
Study Registration Dates
First Submitted
August 10, 2021
First Submitted That Met QC Criteria
August 16, 2021
First Posted (Actual)
August 20, 2021
Study Record Updates
Last Update Posted (Actual)
March 20, 2024
Last Update Submitted That Met QC Criteria
March 18, 2024
Last Verified
March 1, 2024
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2021-7452
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
UNDECIDED
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
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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