A 63-year-old female patient with a history of pulmonary heart disease underwent radiofrequency ablation because of a persistent atrial flutter. Endocardial mapping with the carto3 system confirmed atrial flutter counterclockwise reentry around the tricuspid annulus. Routine ablation of the cavo-tricuspid isthmus line to bi-directional block was performed. https://smokeysmountainfurnitureoutlets.shop/product-category/lateral-file/