The influence of cavotricuspid isthmus length on total radiofrequency energy to cure right atrial flutter.

Background And Aim: The complexity and success rate of right atrial flutter ablation is highly dependent on anatomical structures.

Methods: The study comprised 35 consecutive patients (33-77 years old; 30 men) who underwent ablation of typical atrial flutter. The linear ablation line was measured offline as a surrogate for the cavotricuspid isthmus (CTI) length with the help of a three-dimensional mapping and navigation system (Ensite™).