It is a prospective, randomized and double-blind clinical trial involving an invasive technique for isolation of pulmonary veins (PVAC gold) in relation to clinical treatment during an one year of segment. The patients included have paroxysmal atrial fibrillation (aged 65 years and older) refractory to antiarrhythmic treatments that do not have structural and / or ischemic heart diseases. This trial employed quality of life scores prior to the study and during the sixth and twelfth month of the segment, electrocardiograms and holter of 24 hours. The proposed imaging tests was the transesophageal echocardiogram before each procedure. The cerebral MRI was performed in the 24 hours post invasive procedure and Angio-tomography of the pulmonary veins in the 6-month segment.
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Recurrence of atrial fibrillation
Timeframe: 1 year after ablation