【Figure Legend】
Figure 1. The location of the touch up sites.
The superior vena cava (SVC) was circumferentially divided into 4 segments. Touch up ablation was mostly needed on the anterolateral wall.
Figure 2. This shows the comparison of the ablation parameters between the touch up sites and control sites.
All parameters of the touch up sites were significantly lower than that of the control sites. The median value of the AI at the control sites was 350 and the maximum value of the AI at the touch up sites was 308.
Figure 3. The comparison of the local potentials and AI for each area of the SVC.
The continuous variables are shown as the median value or mean value. The local potentials were highest in the anterior area and lowest in the posterior and lateral area.
Abbreviation: Ant = anterior wall; Lat =lateral wall; Post =posterior wall; Sep = septal wall