Recurrent AF/AT
AF/AT recurrence was observed in 104 (25.9%) patients after the initial ablation, with higher recurrence rates in patients with LVAs (group B+C) than in those without (group A, Figure 2A and Table 1). No difference was observed between group B and C. All patients developed AF/AT recurrence in group D. Multivariate analyses of patients having complete voltage maps revealed that female, large left atrial diameter, and LVA presence were independently associated with AF/AT recurrence (Table 2). Among patients with LVAs, large left atrial diameter was the only associated factor (Table 3).
Transformation from paroxysmal AF to persistent AF was more frequently observed in patients with LVAs (group B+C) than in those without (group A, Figure 3A). In addition, patients with LVAs (group B+C) more frequently experienced late AF/AT recurrence, defined as recurrence at > 6 months after the last ablation, than those without (group A, Figure 3B).