Objectives: In this study using radiofrequency current and the electroanatomic mapping system CARTO, ablated in 47 patients suffering from drugrefractory atrial fibrillation (paroxysmal and permanent AFib). Background: the authors treated atrial fibrillation (AFib) with radiofrequency (RF) catheter ablation by creating long linear lesions in the atria. To achieve line continuity, a 3D electroanatomic nontluoroscopic mapping system was used (CARTO). Methods and Results: In 47 patients with recurrent AF, a catheter incorporating a passive magnetic field sensor was navigated in left atria to construct a 3D activation map. RF energy was delivered to create continuous linear lesions: a long line encircling the pulmonary veins in the left atrium. After RF application, the atria were remapped to validate completeness of the block lines, demonstrated by late activation of the areas drcumscribed by the lines. The mean procedure duration was 320,5 + or - 30,1 minutes, with mean fluoroscopy time of 55,7 + or - 7,9 minutes. 02 cases acute complications occurred was tamponate, but success by drain cardiac epicardium. After procedure, 38 patients were in sinus rhythm (81,4 percent). After a follow-up of 6.0 to 48.0 months (average, 20,0 + or - 9,3 months), 40 patients are asymptomatic with Beta blocker (85.3 percent) and no AFib evidence in holter ECG 24h. Conclusions: Recurrent drug-refractory AFib can be treated by RF catheter ablation. Creation of long continuous linear lesions necessary to compartmentalize the atria is fadlitated by a nonfluoroscopic electroanatomic mapping system.
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