ClinicalTrials.gg
RecruitingNCT06159764CANVAS-RUpdated Jun 17, 2025

National Registry of Cardioneuroablation in Recurrent Reflex Syncope

An observational study in Syncope, Vasovagal, Bradycardia and Heart Arrest, sponsored by University Hospital, Bordeaux. Recruiting at 14 sites in France. Open to participants aged 18 Years to 100 Years. Per ClinicalTrials.gov, last updated 2025-06-17.

Sponsored by University Hospital, Bordeaux · Observational

From the registry’s dates

  • Primary completion was expected by Jan 2026, 9 months ago, but the record still lists the study as recruiting.
  • Started Nov 2024; still recruiting 1 year 11 months later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
50
Ages
18 Years to 100 Years
Sex
All
01

Study summary

This registry aims to collect patient data on cardioneuroablation for vasovagal syncope from multiple centers in France. The aim is to evaluate success rates, compare techniques and help institutions set up their own cardioneuroablation program

Read the detailed description

Cardioneuroablation is an emerging technique used to treat patients with vagally-mediated extrinsic bradycardia. It seems particularly efficient in patients with recurrent vasovagal syncope due to a strong cardioinhibitory effect. The procedure consists in using radiofrequency ablation to destroy cardiac ganglionated plexi located in epicardial fat pads around the atrias. Key questions concerning this procedure still remain unanswered: 1) What is the success rate of the procedure 2) Which patients will benefit from this technique? 3) Which fat pads should be targeted during the procedure? 4) What is the best way of identifying the location of these fat pads? 5) What are the long-term effects of this procedure? A multicenter registry seems ideal to try to answer these questions at minimal cost

02

Conditions studied

  • Syncope, Vasovagal
  • Bradycardia
  • Heart Arrest

Keywords

  • cardioneuroablation
  • vasovagal syncope
  • registry
03

In context

Syncope, Vasovagal

88 studies on the registry are indexed under Syncope, Vasovagal; 28 are open to participants now.

This study's planned enrollment of 50 is below the median of 140 across 29 observational studies indexed under Syncope, Vasovagal.

Browse Syncope, Vasovagal studies →

Lead sponsor

University Hospital, Bordeaux is the lead sponsor of 806 studies on the registry; 197 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 100 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

patients with vagally-mediated extrinsic bradycardia

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients aged 18 or more
  • Recurrent vasovagal syncope (≥2 episodes during the last year) with an asystolic component (≥3 second pause) recorded during a spontaneous episode. The asystole can be related to sinus arrest or paroxysmal AV block.
  • Scheduled cardioneuroablation procedure
  • Estimated residual battery life ≥ 1 year.
  • Patient affiliated to or beneficiary of national health security scheme.
  • Patient who have received an information notice and has not objected to the use of their data in the registry.

Exclusion criteria

Exclusion Criteria:

  • to anticoagulation therapy: major bleeding, risk of major bleeding, severe hepatic disease
  • Contraindication to cardiac CT: contrast medium allergies
  • Intracardiac thrombus
  • Patient detained by judicial or administrative decision.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
50 participants (estimated)
Target follow-up
12 Months
Patient registry
Yes

Groups and cohorts

  • Cardioneuroablation

    Cardioneuroablation

    Procedure: Cardioneuroablation

Interventions

  • ProcedureCardioneuroablation

    radiofrequency ablation to destroy cardiac ganglionated plexi located in epicardial fat pads around the atrias

06

What researchers measure

Primary outcomes

  1. Recurrence of vasovagal syncope

    Number of patients with recurrence

    Time frame: 12 months

Secondary outcomes

  1. Recurrence of vasovagal syncope in different subgroups

    Number of patients with recurrence

    Time frame: 12 months

  2. Efficacy of cardioneuroablation procedure

    Number of asystolic pauses

    Time frame: 12 months

  3. prevalence of post-ablation pre-syncopal events

    Number of post-ablation pre-syncopal events

    Time frame: 12 months

  4. correlation between ablation sites and epicardial fat pads

    spatial correlation between ablation sites and epicardial fat pads

    Time frame: 12 months

  5. Quality of life of post-ablated patients (Score 1)

    ISQoL score (Impact of syncope on quality of life) (0-55, lower scores indicate less impact of syncope on HRQoL \[better\]

    Time frame: 12 months

  6. Quality of life of post-ablated patients (Score 2)

    SFSQ score (Syncope Functional Status HR-QoL Questionnaire) (0-100, lower scores indicate less impact of syncope \[better\])

    Time frame: 12 months

  7. Assessment of technical learning curve by centre

    procedure time

    Time frame: 12 months

07

Study locations

11 of 14 sites recruiting
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Nov 2024 (actual). Primary completion is estimated for Jan 2026, 14 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 28, 2023
First posted
Dec 7, 2023
StartActual
Nov 27, 2024
Primary completionEst.
Jan 31, 2026
CompletionEst.
Jan 31, 2026
Last update
Jun 17, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 17, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06159764
Responsible party
Sponsor
First posted
Dec 7, 2023
Start date
Nov 27, 2024
Primary completion
Jan 31, 2026 (estimated)
Completion
Jan 31, 2026 (estimated)
Last update
Jun 17, 2025

Study contacts

Josselin DUCHATEAU
Contact
josselin.duchateau@chu-bordeaux.fr
+33 5 57 65 64 71
Josselin DUCHATEAU
principal investigator · University Hospital, Bordeaux

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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