Localization of Anatomical Structures Involved in Nodal Tachycardias by High Density Mapping.
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In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: high resolution cartography.
- Who it may be relevant to
- Registry conditions: Atrioventricular Nodal Reentry Tachycardia, Supraventricular Tachycardia. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- France
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Localization of Anatomical Structures Involved in Nodal Tachycardias by High Density Mapping. Feasibility Study.
Overview
The aim of the present work is to analyze the capacity of high resolution mapping systems to determine the precise location of the AV node and peri-nodal slow-conducting pathways, using standard recording parameters, but also off-line additional filter changes and additional techniques (conduction velocities, isochrones and dV/dt). The investigative team plan a prospective monocentric study. Detailed high resolution mapping of the Koch triangle and neighboring areas will be collected through the RHYTHMIA HDx 3D electro-anatomical mapping system and the multipolar ORION catheter. This sample will consist of 2 groups of patients: the first will include patients referred for AVNRT ablation and the second will include control patients (without AVNRT), referred for another indication requiring similar mapping system. If visualized, position of the slow pathway and AV node will be compared with the ablation areas, which will be set conventionally under fluoroscopy.
Interventions
- Procedure high resolution cartography
High-resolution electro-anatomical mapping will be performed in each group with the RHYTHMIA HDx system to obtain an activation and voltage map of the Koch triangle and surrounding areas.
Primary outcome measures
- Determine the precise location of the AV node [Time frame: 7 months]
Eligibility criteria
Inclusion criteria
Group 1: Patients without heart disease presenting with reciprocal tachycardia by intra-nodal reentry.
Group 2: Control subjects, without nodal tachycardia, without heart disease, and admitted for ablation of atrial fibrillation or ventricular extrasystoles on a healthy heart and with a 3D system.
Exclusion criteria
- Presence of underlying structural heart disease or history of atrial ablation or atrial tachycardia
- Minor or protected patient
- Patient under guardianship, curatorship or safeguard of justice
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Non-randomized
- Model
- Parallel assignment
- Masking
- Open label
- Primary purpose
- Other
Study locations
France · 1 center
- CHU de Toulouse — Toulouse
Identifiers
NCT: NCT05296954 · RC31/21/0076