NCT05751330

Brief Summary

Multicenter Italian interventional "proof of efficacy" clinical trial that aims to evaluate the incidence of asystolic pauses and heart rate in patients with CNS who performed severe CNA identified through asystolic pauses identification by implantable loop recorder. The study is independent, "investigator-initiated," sponsored by a nonprofit scientific association called the Italian Multidisciplinary Group for the Study of Syncope (GIMSI).

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
24

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Sep 2022

Typical duration for not_applicable

Geographic Reach
1 country

2 active sites

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

September 20, 2022

Completed
4 months until next milestone

First Submitted

Initial submission to the registry

January 4, 2023

Completed
2 months until next milestone

First Posted

Study publicly available on registry

March 2, 2023

Completed
1.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 20, 2024

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 30, 2024

Completed
Last Updated

March 2, 2023

Status Verified

February 1, 2023

Enrollment Period

2 years

First QC Date

January 4, 2023

Last Update Submit

February 20, 2023

Conditions

Outcome Measures

Primary Outcomes (1)

  • Intrapatient incidence of asystolic episodes before and after cardioneuroablation

    frequency (number and percentage) of asystolic episodes before and after ablation

    through study completion, an average of 1 year

Secondary Outcomes (1)

  • Comparison of mean heart rate, before and after cardioneuroablation, incidence of (pre)syncopal episodes before and after CNA and, finally, beat-to beat HR variability during ILR monitoring

    through study completion, an average of 1 year

Study Arms (1)

patients affected by Cardioinhibitory Neurocardiogenic Syncope

EXPERIMENTAL
Procedure: Transcatheter ablation of cardiac ganglionated plexi

Interventions

The ablative procedure involves applying radiofrequency deliveries in the two Right atrium anatomical sites close to the two main ganglionic plexuses of the right atrium: * Inferior-posterior area (site of first ablation) corresponding to the right inferior atrial ganglion located between the inferior vena cava, coronary sinus ostium and near the atrioventricular node * Upper-posterior area (site of second ablation) corresponding to the right superior atrial ganglion located between the superior vena cava and the posterior surface of the right atrium

patients affected by Cardioinhibitory Neurocardiogenic Syncope

Eligibility Criteria

Age18 Years - 60 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Age between 18 and 60 years
  • Patients with a clinical diagnosis of neuromediated syncope according to class I criteria of the ESC guidelines, Table 1
  • Clinical history of recurrent syncope (≥2 in the last year or ≥3 in the last 2 years), severe, not tolerated by the patient
  • Documentation of ≥2 asystolic pauses \>3 sec daytime on ECG monitoring by implantable loop recorder (ILR), with or without syncope
  • Refusal by patient to perform pacemaker implantation
  • Tilt test is recommended but not mandatory. Patients with negative tilt test are also enrollable. It can be either positive or negative.

You may not qualify if:

  • Absence of sinus dysfunction and atrioventricular node disease.
  • Absence of structural heart disease
  • Possible alternative diagnoses of syncope

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

Policlinico Casilino

Rome, Lazio, 00100, Italy

RECRUITING

Policlinico Casilino

Rome, Lazio, 00179, Italy

RECRUITING

Related Publications (16)

  • Task Force for the Diagnosis and Management of Syncope; European Society of Cardiology (ESC); European Heart Rhythm Association (EHRA); Heart Failure Association (HFA); Heart Rhythm Society (HRS); Moya A, Sutton R, Ammirati F, Blanc JJ, Brignole M, Dahm JB, Deharo JC, Gajek J, Gjesdal K, Krahn A, Massin M, Pepi M, Pezawas T, Ruiz Granell R, Sarasin F, Ungar A, van Dijk JG, Walma EP, Wieling W. Guidelines for the diagnosis and management of syncope (version 2009). Eur Heart J. 2009 Nov;30(21):2631-71. doi: 10.1093/eurheartj/ehp298. Epub 2009 Aug 27. No abstract available.

  • Brignole M, Moya A, de Lange FJ, Deharo JC, Elliott PM, Fanciulli A, Fedorowski A, Furlan R, Kenny RA, Martin A, Probst V, Reed MJ, Rice CP, Sutton R, Ungar A, van Dijk JG; ESC Scientific Document Group. 2018 ESC Guidelines for the diagnosis and management of syncope. Eur Heart J. 2018 Jun 1;39(21):1883-1948. doi: 10.1093/eurheartj/ehy037. No abstract available.

  • Sutton R, Petersen ME. The clinical spectrum of neurocardiogenic syncope. J Cardiovasc Electrophysiol. 1995 Jul;6(7):569-76. doi: 10.1111/j.1540-8167.1995.tb00429.x.

  • Brignole M, Menozzi C, Moya A, Andresen D, Blanc JJ, Krahn AD, Wieling W, Beiras X, Deharo JC, Russo V, Tomaino M, Sutton R; International Study on Syncope of Uncertain Etiology 3 (ISSUE-3) Investigators. Pacemaker therapy in patients with neurally mediated syncope and documented asystole: Third International Study on Syncope of Uncertain Etiology (ISSUE-3): a randomized trial. Circulation. 2012 May 29;125(21):2566-71. doi: 10.1161/CIRCULATIONAHA.111.082313. Epub 2012 May 7.

  • Soteriades ES, Evans JC, Larson MG, Chen MH, Chen L, Benjamin EJ, Levy D. Incidence and prognosis of syncope. N Engl J Med. 2002 Sep 19;347(12):878-85. doi: 10.1056/NEJMoa012407.

  • Brignole M, Russo V, Arabia F, Oliveira M, Pedrote A, Aerts A, Rapacciuolo A, Boveda S, Deharo JC, Maglia G, Nigro G, Giacopelli D, Gargaro A, Tomaino M; BioSync CLS trial Investigators. Cardiac pacing in severe recurrent reflex syncope and tilt-induced asystole. Eur Heart J. 2021 Feb 1;42(5):508-516. doi: 10.1093/eurheartj/ehaa936.

  • Pachon JC, Pachon EI, Pachon JC, Lobo TJ, Pachon MZ, Vargas RN, Jatene AD. "Cardioneuroablation"--new treatment for neurocardiogenic syncope, functional AV block and sinus dysfunction using catheter RF-ablation. Europace. 2005 Jan;7(1):1-13. doi: 10.1016/j.eupc.2004.10.003.

  • Scanavacca M, Hachul D, Pisani C, Sosa E. Selective vagal denervation of the sinus and atrioventricular nodes, guided by vagal reflexes induced by high frequency stimulation, to treat refractory neurally mediated syncope. J Cardiovasc Electrophysiol. 2009 May;20(5):558-63. doi: 10.1111/j.1540-8167.2008.01385.x. Epub 2008 Dec 17.

  • Armour JA, Murphy DA, Yuan BX, Macdonald S, Hopkins DA. Gross and microscopic anatomy of the human intrinsic cardiac nervous system. Anat Rec. 1997 Feb;247(2):289-98. doi: 10.1002/(SICI)1097-0185(199702)247:23.0.CO;2-L.

  • Singh S, Johnson PI, Lee RE, Orfei E, Lonchyna VA, Sullivan HJ, Montoya A, Tran H, Wehrmacher WH, Wurster RD. Topography of cardiac ganglia in the adult human heart. J Thorac Cardiovasc Surg. 1996 Oct;112(4):943-53. doi: 10.1016/S0022-5223(96)70094-6.

  • Chiou CW, Eble JN, Zipes DP. Efferent vagal innervation of the canine atria and sinus and atrioventricular nodes. The third fat pad. Circulation. 1997 Jun 3;95(11):2573-84. doi: 10.1161/01.cir.95.11.2573.

  • Po SS, Nakagawa H, Jackman WM. Localization of left atrial ganglionated plexi in patients with atrial fibrillation. J Cardiovasc Electrophysiol. 2009 Oct;20(10):1186-9. doi: 10.1111/j.1540-8167.2009.01515.x. Epub 2009 Jun 26.

  • Calo L, Rebecchi M, Sette A, Sciarra L, Borrelli A, Scara A, Grieco D, Politano A, Sgueglia M, De Luca L, Martino A, Panattoni G, Golia P, Turrisi OV, Knowles M, Strano S, de Ruvo E. Catheter ablation of right atrial ganglionated plexi to treat cardioinhibitory neurocardiogenic syncope: a long-term follow-up prospective study. J Interv Card Electrophysiol. 2021 Sep;61(3):499-510. doi: 10.1007/s10840-020-00840-9. Epub 2020 Aug 6.

  • Rebecchi M, de Ruvo E, Strano S, Sciarra L, Golia P, Martino A, Calo L. Ganglionated plexi ablation in right atrium to treat cardioinhibitory neurocardiogenic syncope. J Interv Card Electrophysiol. 2012 Sep;34(3):231-5. doi: 10.1007/s10840-012-9666-5. Epub 2012 Mar 21. No abstract available.

  • Debruyne P, Rossenbacker T, Collienne C, Roosen J, Ector B, Janssens L, Charlier F, Vankelecom B, Dewilde W, Wijns W. Unifocal Right-Sided Ablation Treatment for Neurally Mediated Syncope and Functional Sinus Node Dysfunction Under Computed Tomographic Guidance. Circ Arrhythm Electrophysiol. 2018 Sep;11(9):e006604. doi: 10.1161/CIRCEP.118.006604.

  • Brignole M, Iori M, Solari D, Bottoni N, Rivasi G, Ungar A, Deharo JC, Guieu R. Efficacy of theophylline in patients with syncope without prodromes with normal heart and normal ECG. Int J Cardiol. 2019 Aug 15;289:70-73. doi: 10.1016/j.ijcard.2019.03.043. Epub 2019 Mar 22.

MeSH Terms

Conditions

Syncope, Vasovagal

Condition Hierarchy (Ancestors)

Orthostatic IntolerancePrimary DysautonomiasAutonomic Nervous System DiseasesNervous System DiseasesSyncopeUnconsciousnessConsciousness DisordersNeurobehavioral ManifestationsNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and Symptoms

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

January 4, 2023

First Posted

March 2, 2023

Study Start

September 20, 2022

Primary Completion

September 20, 2024

Study Completion

December 30, 2024

Last Updated

March 2, 2023

Record last verified: 2023-02

Data Sharing

IPD Sharing
Will share

The study envisages the subsequent activation of other participating centres to recruit and enrol patients to undergo the Cardioneuroablation procedure

Shared Documents
STUDY PROTOCOL, SAP, ICF, CSR

Locations