Atrial Fibrillation Clinical Trial
Official title:
Isolation of Pulmonary Veins With the Aid of Magnetic Resonance Imaging
The ALICIA-FA study will elucidate whether targeting atrial myocardial fibrosis identified by late gadolinium-enhanced magnetic resonance imaging (LGE-MRI) improves atrial fibrillation (AF) ablation outcomes.
Atrial fibrosis is a hallmark of the AF substrate. An accurate identification and localization of myocardial fibrosis areas prior to an ablation procedure by means of LGE-MRI might help to target atrial areas harboring AF, thereby improving ablation outcomes and reducing AF recurrences. In order to test this hypothesis, we will conduct a randomized study comparing the isolation of pulmonary veins without fibrosis imaging (conventional ablation procedure) vs. isolation of the pulmonary veins and pathological (fibrotic) tissue with the aid of LGE-MRI. Fibrotic tissue patches will be encircled and isolated in all patients in the active arm; furthermore, LGE-MRI will be used to identify, locate and guide ablation catheter to anatomical gaps surrounding pulmonary veins in re-do procedures. Eventually, we will identify an optimized ablation strategy in patients undergoing AF radiofrequency ablation on the basis of left atrium (LA) fibrosis characterization. ;
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