Results
OT has been used to study different types of supraventricular tachycardias. Regarding reentry tachycardias, velocity map has allowed the characterization and definition of the impulse velocity along the dual nodal pathway and the accessory pathways (AP). As regards atrial flutter, it has successfully allowed the definition of the slowest zone of the critical isthmus and radiofrequency (RF) delivery at that point resulted in termination of the arrhythmia. During mapping of the left atrium in sinus rhythm, the velocity map allowed the identification of the course of the Bachmann’s bundle, which could potentially play a role during the ablation of persistent atrial fibrillation (AF).