[Successful ablation of left atrial flutter with a single RF application in a patient after atrial fibrillation ablation - when is it possible?].

We describe a case of a 49-year-old patient with left atrial flutter after atrial fibrillation ablation. Left atrium activation map (CARTO) and entrainment mapping revealed local reentry on the posterior wall of the left atrium, close to the proximal coronary sinus. Arrhythmia was terminated with a single RF application and remained noninducible. However, after 6-weeks follow-up patient presented with a roof line and mitral isthmus - dependent atrial flutters which were successfully ablated.