The location of the touch up sites
A first pass isolation was obtained in 27 patients and additional ablation was needed in 9 patients. The detailed location of the touch up sites are shown in Figure 1. A touch up ablation was needed at 20 points in the anterior area, 10 in the lateral area, and 6 in the septum area. Touch up ablation was not needed in the posterior area. No one had any transient or prolonged phrenic nerve injury or sinus node injury.