During the past decade, catheter ablation of atrial fibrillation (AF) has evolved rapidly from an investigational procedure to its current status as a commonly performed ablation procedure in many major hospitals throughout the world. The goal of the ablation is to isolate the pulmonary veins from which in the majority of the population atrial fibrillation originates. During the past several years a large number of meta analyses have been performed in the hope of better defining the efficacy of AF ablation. Overall, the success rate was 77.8% in the ablation arm as compared with 23.3% in the control group.