NPPB and atrial fibrillation: On the other hand, the P-values for gender (0.666), heart rate (0.456), NT-proBNP (0.514), CKMB (0.46), FFA (0.26), LDL (0.088), hypertension (0.195), atrial fibrillation (0.676), and non-sustained ventricular tachycardia (0.642) were not statistically significant.