 Since its introduction into clinical practice, catheter ablation CA aimed at cure of atrial fibrillation AF has become increasingly prevalent. Different techniques have been proposed and are currently under investigation in various electrophysiology EP laboratories, with increasing knowledge of the pathophysiology of human AF and critical assessment of clinical outcome after the curative procedure. The favorable results reported in different studies have fueled enthusiasm for CA of AF, with the number of ablation procedures increasing from 1994 to the present time. However, these technologies have varied catheter designs, ranging from different forms of irrigation external or internal irrigation. The increase of the rate of success of the AF by ablation with the development of new catheters has permitted a considerable reduction of the medical treatment and the disappearance of grave complications. The procedure will be standard with isolation of pulmonary veins and block through the cavo-tricuspid isthmus obtained. 