During the mid-term period, LAVi, BNP level, and AFCLV1 were the predictors of AF recurrence in the univariate analysis (1.033 (1.007–1.060), p = 0.013; 1.163 (1.070–1.265), p = 0.0004; and 1.194 (1.058–1.348), p = 0.004, respectively), and the independent predictor of AF recurrence in the multivariate analysis was longer AFCLV1 (1.192 (1.044–1.359), p = 0.0091). Here, NPPB is linked to atrial fibrillation.