Paroxysmal Atrial Fibrillation Clinical Trial
Official title:
Combined Study of ATrial Strain and Voltage by High Density Mapping in Young Patients With Atrial Fibrillation.
Atrial The treatment of atrial fibrillation (AF) includes 2 axes: the prevention of the cardio-embolic risk and rhythm control. The possibilities for this control are antiarrhythmic drugs and, above all, catheter ablation, an interventional cardiology technique which consists in treating the areas responsible for the initiation and perpetuation of AF by applying radiofrequency energy or cryotherapy to the myocardial tissue. Limited research has been done on the combination of different parameters to manage AF, especially during the initial stage of the disease. A translational and multimodal approach could make it possible to better characterize this pathology and thus, help to adjust the therapeutic management for the patients. The combined analysis of regional electrophysiological, morphological, and functional parameters of the left atrium could make it possible to better detect early atrial cardiomyopathy and predict recurrences of atrial fibrillation.
The electrophysiological substrate for patients with persistent atrial fibrillation is heterogeneous with areas of atrial myocardium of low voltage amplitudes and areas of rapid fragmented signals in arrhythmia. The targets of ablation treatment in these cases are currently poorly defined. Several promising strategies have emerged, such as the isolation of fibrotic areas, low voltage. An integration analysis of regional electrophysiological, morphological, and functional parameters of the left atrium, therefore, open up a new area of research that has not been studied to date and could help to better guide the therapeutic management of patients with AF. The study aims to assess the association between regional and global myocardial strain abnormalities on magnetic resonance imaging (MRI) and the amplitude of the atrial intracardiac electrical potential, in young subjects with symptomatic AF. ;
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