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Atrial fibrillation (AF) is the most common cardiac arrhythmia in adults. It is a major cause of ischemic stroke and heart failure. Intravascular cardiac ablation of the left atrium by catheter delivery is an efficient treatment to restore sinus rhythm. AF ablation is a class IIa treatment for patients with symptomatic persistent AF refractory or intolerant to antiarrhythmic medication. There are still many debates considering the ablation strategy. The pulmonary veins remain the cornerstone of AF ablation therapy, even in persistent AF. There is a large electrical remodeling occurring in the left atrium between paroxysmal AF, early persistent AF and long-standing persistent AF. However, no multicentric and randomized study has demonstrated so far the interest of targeting other left atrial substrate, such as rotors or focal sources.
Our study aims to describe with a noninvasive mapping system the arrhythmogenic substrate of persistent AF > 6 months pre- and post-cardioversion, and after pulmonary vein isolation.
Atrial Fibrillation, Persistent
Noninvasive mapping (Cardioinsight® system), long-term cardiac monitoring (LINQ system), Atrial Fibrillation ablation procedure
Caen University Hospital
Not yet recruiting
University Hospital, Rouen
Published on BioPortfolio: 2020-01-22T12:13:01-0500
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