NPPB and atrial fibrillation: The previous suggested cut-off point of NT-proBNP>95pg/ml [7] showed 91.2% sensitivity, 44.2% specificity, 18.8% positive predictive value (PPV), and 97.2% negative predictive value (NPV) to detect any AF and 82.4% sensitivity, 44.2% specificity, 9.5% PPV, and 97.2% NPV to detect paroxysmal AF.