NPPB and atrial fibrillation: With regard to laboratory findings, hsCRP and BNP levels were significantly higher in the AF recurrence group than in the no recurrence group (1.5 [0.7–4.1] vs. 1.0 [0.5–2.0], p < 0.05, 127.5 [85.0–244.0] vs. 83.5 [44.5–149.0], p < 0.001, respectively).