Figure Legend
Figure 1. Creation of atrio-ventricular dual chamber map
When the V overlap algorism was enabled, the annotation of 3D map focus on the single chamber only (A). But the detailed connection between atrial and ventricular was not clear and the earliest activation site was away from the success site (red tag). Once the V overlap algorism was disabled (B), the annotation of 3D map can focus on the different chamber and show a 3D color map of two chamber. The atrial activation was spread from the success site (C).
Figure 2. Representative figure of dual chamber map of right sided accessory pathway with antegrade conduction
The atrial activation was gathered to the atrio-ventricular annulus and spread to the ventricle. Antegrade conduction was interrupted soon after the energy delivery at the red tag site.
Figure 3. Representative figure of dual chamber map of septal accessory pathway with retrograde conduction
The ventricular activation was gathered to the atrio-ventricular annulus and spread to the atrium. Retrograde conduction was interrupted immediately after the energy delivery at the red tag site.