Low-voltage Areas Defragmentation in Sinus Rhythm for Radiofrequency Ablation of Persistent Atrial Fibrillation

Low voltage areas are identified and treated by radiofrequency. Atrial fibrillation is treated by heat produced by an electric current: radio frequency. This is an intervention that consists of blocking abnormal electrical activity, especially in the pulmonary veins.

The defragmentation is guided by a map of fragmented potentials, made through a topography catheter, to locate the most abnormal areas that are the target of ablation.