- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03535818
Adjunctive Ganglionated Plexus Ablation in Redo-Pulmonary Vein Isolation (ADD-GP)
September 22, 2022 updated by: Imperial College London
Adjunctive GP Ablation In Redo-PVI: Paroxysmal Atrial Arrhythmias After Pulmonary Vein Isolation Are Driven By Ectopy-Triggering Left Atrial Ganglionated Plexus
The investigator propose to test the efficacy of adjunctive ET-GP ablation in patients undergoing redo PVI for paroxysmal AF.
Study Overview
Status
Recruiting
Intervention / Treatment
Detailed Description
Patients with ongoing paroxysmal arrhythmias after pulmonary vein isolation (PVI) for paroxysmal and persistent atrial fibrillation (AF) get incrementally less benefit with redo-PVI.
This implies non-pulmonary vein (PV) triggers, which are more challenging to locate.
The autonomic nervous system is implicated in the multifactorial pathogenesis of AF but few studies have attempted neural targeting as a therapeutic intervention.
We have demonstrated that stimulation of specific left atrial ganglionated plexi (GPs) triggers both AF and atrial ectopy and importantly stimulation of these sites may not induce AV block, the 'conventional' marker used to locate GPs.
Having shown that these ectopy-triggering GP (ET-GP) sites are anatomically stable and can be rendered inactive by either ablation at the site or by ablation between the site and the adjacent PV, a single centre study suggests that ET-GP ablation can prevent recurrent AF in some patients.
Study Type
Interventional
Enrollment (Anticipated)
60
Phase
- Phase 2
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: Ruth Nicholson
- Phone Number: 020759 41862
- Email: r.nicholson@imperial.ac.uk
Study Locations
-
-
-
London, United Kingdom
- Recruiting
- Prapa Kanagaratnam
-
Principal Investigator:
- Prapa Kanagaratnam, PhD
-
Contact:
- Prapa Kanagaratnam, PhD
- Phone Number: 02078863783
- Email: p.kanagaratnam@imperial.ac.uk
-
-
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
16 years to 83 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Males or females eighteen (18) to eighty five (85) years old
- Paroxysmal atrial fibrillation
- Previous pulmonary vein isolation
- Suitable candidate for catheter ablation
- Signed informed consent
Exclusion Criteria:
- Contraindication to catheter ablation
- Presence of a cardiac thrombus
- Valvular disease that is grade moderate or greater
- Any form of cardiomyopathy
- On amiodarone therapy
- Patients who lack capacity
- Active gastrointestinal bleeding
- Active infection or fever
- Renal failure (Creatinine >200µmol/L)
- Life expectancy shorter than the duration of the trial
- Bleeding or clotting disorders or inability to receive heparin
- Pregnant
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: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Redo pulmonary vein isolation
|
RF application to achieve complete pulmonary vein isolation +/- ganglionated plexus ablation
|
Active Comparator: Ganglionated plexus ablation + redo pulmonary vein isolation
|
RF application to achieve complete pulmonary vein isolation +/- ganglionated plexus ablation
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Any atrial arrhythmia >30s documented on ECGs
Time Frame: 12 months
|
After blanking period 3 months
|
12 months
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Symptom recurrence requiring repeat ablations
Time Frame: 12 months
|
12 months
|
Complications
Time Frame: 12 months
|
12 months
|
Radiofrequency time
Time Frame: Within ablation procedure
|
Within ablation procedure
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Prapa Kanagaratnam, PhD, Imperial College London
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)
June 14, 2017
Primary Completion (Anticipated)
October 3, 2023
Study Completion (Anticipated)
October 3, 2023
Study Registration Dates
First Submitted
May 14, 2018
First Submitted That Met QC Criteria
May 14, 2018
First Posted (Actual)
May 24, 2018
Study Record Updates
Last Update Posted (Actual)
September 23, 2022
Last Update Submitted That Met QC Criteria
September 22, 2022
Last Verified
September 1, 2022
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 17HH3712
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
No
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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