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Figure 1 Electroanatomic map of the right ventricular outflow tract as viewed in the coronal projection. Superior septal (1 = posterior, 2 = mid, 3 = anterior) and opposing free wall pace-map sites are shown by the light green tags, and the successful ablation site is shown by the red tag. Also noted is the His bundle area (His) and tricuspid valve (TV). The right ventricular apical pacing site was located fluoroscopically and not tagged in this map.