Outcome of the Catheter Ablation
A Kaplan-Meier event-free survival analysis was conducted to assess the cumulative freedom from AF/AT recurrence. One patient had AT recurrences after one procedure. The atrial arrythmia freedom off anti-arrhythmic drugs after the PVI was significantly lower in the patients with high-DFs sites ≧7Hz overlapping with LVAs than in those without high-DFs sites overlapping with LVAs during 11.6±0.8 months of follow-up (35.7% vs. 69.5%, p=0.008). (Figure 4A ). However, there was no significant difference in the %NPs≧50% overlapping with LVAs between the two groups (Figure 4B ). The number of patients receiving post ablation anti-arrhythmic drugs (AADs) during the follow-up was 16 (22%) among those with recurrent AF. There were no cases of cerebral infarctions, cardiac tamponade, PV stenosis, or atrial-esophageal fistulae.