Dual-loop biatrial concomitant macroreentrant tachycardia in a patient without previous history of surgery or ablation

Sinus rhythm restoration after atrial fibrillation plus dual-loop biatrial flutter catheter ablation

“…Finally, exhaustive mapping with a 3-dimensional system is helpful to visualize the potential propagation of re-entries and understand underlying substrate. 6 With the development with high-definition catheters and improvement of electrical signal annotation, current electroanatomical mapping systems allow for better understanding of these complex macro–re-entrant arrhythmias, without the absolute necessity of using entrainment maneuvers that can be difficult to interpret in dual-loop flutters.…”