Prognostic criteria of success and recurrence in circumferential ablation for the treatment of XXXX .

@entity1 @entity358 @entity955 @entity299 @entity943
OBJECTIVES: To analyze the success of circumferential ablation of @entity955 and to investigate possible clinical and electroanatomic predictors of recurrence of @entity943 . METHODS: 104 consecutive @entity1 free of structural @entity299 and refractory to at least two antiarrhythmic drugs, and undergoing circumferential ablation for the treatment of paroxysmal/persistent @entity955 were analyzed. Seventy two @entity1 were males and the mean age of the group was 58.6 + 10.9 years. The procedure consisted of a single transseptal puncture and three-dimension mapping using the CARTO system to acquire points in the left atrium and pulmonary veins. Radiofrequency applications were performed encircling the @entity358 , up to a > or = 80% reduction of the atrial potential amplitude. One additional line was created in the mitral isthmus and another in the cavotricuspid isthmus. Total left atrium volume, area ablated around the pulmonary veins, and completeness of the ablation line (complete or incomplete line) were analyzed. A line was considered complete when the distance between two contiguous radiofrequency application points was lower than 10mm. RESULTS: In a mean 18-month follow-up, 87 @entity1 were in sinus rhythm (84%), and 17 @entity1 presented recurrence (16%). In the multivariate analysis, only the left atrial volume (p<0.0001) and complete ablation (p<0.05) were independent predictors of recurrence. CONCLUSION: The results suggest that the left atrial volume and the presence of complete ablation are predictive of recurrence of @entity955 .
