Predictors of AF recurrence
A univariate Cox proportional hazard regression analysis, including of the AF duration, LA diameter, EF, LA volume, CHA2DS2-VASc score, LVA/LA surface area after the PVI, max-DF value, max-%NP value, high-DF sites overlapping with LVAs, and %NP>50% sites overlapping with LVAs, indicated that the LVA/LA surface area after the PVI (hazard ratio [HR] 1.066; confidence interval [CI], 1.017-1.117, P=0.007) and high-DF sites overlapping with LVAs (HR 1.031; CI, 1.083-5.381, P= 0.031) were significantly associated with AF/AT recurrence. In a multivariate analysis, the LVA/LA surface area after the PVI (HR 1.079; CI, 1.026-1.134, P=0.003) and high-DF sites overlapping with LVAs (HR 2.842; CI, 1.238-6.527, P= 0.014) were independent predictors of AF recurrence.