NPPB and atrial fibrillation: The analysis demonstrated that the AF duration [hazard ratio (HR) 1.008, 95% confidence interval (CI) 1.004–1.013, P < 0.001], TR grade (HR 2.379, 95% CI 1.403–4.036, P = 0.001), eGFR (HR 1.010, 95% CI 1.001–1.020, P = 0.033), and NT-proBNP level (HR 1.001, 95% CI 1.0002–1.002, P = 0.009) were significant predictors of AF recurrence after ablation.