Clinical trial Recruiting at 1 site Interventional Ages 14 and up

Treatment for reflex syncope using cardioneuroablation

Official title: Acute electRophysiOlogical Changes of Ventricular Myocardium Following cArdioneuroablatioN for Asystolic Reflex Syncope

Run by Centre of Postgraduate Medical Education · NCT06458140 · Data updated 2026-11-12

This study is testing if a new procedure called cardioneuroablation can help people with severe reflex syncope by improving their heart function and reducing fainting episodes.

Quick facts

Study typeInterventional
Ages14 Years and up
SexAll
Enrollment50 (estimated)
SponsorCentre of Postgraduate Medical Education
Academic / other
Locations1 site (Warsaw)
StatusRecruiting
StartedMay 20, 2024
Main results expectedDecember 31, 2025
Study endsDecember 31, 2025
Registry record updatedMay 14, 2025
Trial IDNCT06458140 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are individuals with severe, recurrent reflex syncope and documented asystole lasting more than 3 seconds.

Probably not a fit

Patients who do not consent to participate or have contraindications for right ventricular stimulation may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the effects of cardioneuroablation (CNA) on patients suffering from severe reflex syncope characterized by asystolic episodes. CNA aims to eliminate the vagal nerve's influence on heart function, potentially improving heart rate and conduction. The study will assess the acute impacts of total vagal denervation on ECG and electrophysiological parameters, as well as the risk of ventricular arrhythmias in 50 patients undergoing the procedure. Measurements will be taken before and after the CNA intervention to evaluate its effectiveness and safety.

Why it matters

Potential benefit: If successful, this approach could significantly reduce the frequency of syncope episodes in affected patients.

How similar studies have gone: While cardioneuroablation is a relatively novel approach, preliminary studies suggest it may hold promise in treating similar conditions.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* severe, recurrent symptoms due to reflex syncope with ECG documented asystole \>3 seconds
* history of ineffective prior non-pharmacological treatment
* positive baseline atropine test (sinus rate acceleration \> 30% and no atrio-ventricular block following 2 mg of intravenous atropine)
* informed written consent to participate in the study

Exclusion Criteria:

* Lack of consent to participate in the study
* Contraindications to perform right ventricular stimulation

Where it's running

  • Department of Cardiology, Postgraduate Medical School, Grochowski Hospital
    Warsaw, Poland
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Focal Cryoablation vs. Radiofrequency Cardioneuroablation for Bradyarrhythmias

    This study tests whether focal cryoablation can treat vagally driven slow heart rhythms as well as traditional radiofrequency ablation in adults with bradycardia or related syncope.

    Recruiting Tomsk National Research Medical Center of the Russian Academy of Sciences · Tomsk, Tomsk Oblast · NCT07671898

  • New method for treating reflex syncope using cardioneuroablation

    This study is testing a new heart treatment called cardioneuroablation to see which of three methods works best for finding the right spots in the heart to help people with severe fainting spells.

    Recruiting Centre of Postgraduate Medical Education · Warsaw, Masovian Voivodeship · NCT06472102

  • Understanding how blood phobia affects fainting

    This study is testing how a fear of blood and needles affects fainting by looking at how people's bodies respond when they feel stressed about these things.

    Recruiting Simon Fraser University · Burnaby, British Columbia · NCT06336031

  • Registry for cardioneuroablation in patients with recurrent vasovagal syncope

    This study is collecting information to see how well a new treatment called cardioneuroablation works for people with frequent fainting spells caused by vasovagal syncope.

    Recruiting at 11 sites University Hospital, Bordeaux · Bron and 13 other locations · NCT06159764

  • Improving blood pressure control in children who faint

    This study is testing if certain movements can help children aged 6-18 who faint feel better by improving their blood pressure and heart function compared to regular advice.

    Recruiting Simon Fraser University · Burnaby, British Columbia · NCT05633693

  • Assessing counterpressure maneuvers for preventing fainting in children

    This study is testing if teaching children techniques to prevent fainting can help them avoid losing consciousness when they visit the emergency room.

    Recruiting Simon Fraser University · Vancouver, British Columbia · NCT05555771

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.