NPPB and atrial fibrillation: Post-operative atrial fibrillation (POAF),<br>atrial fibrillation (AF)<br>N-terminal pro-B-type natriuretic peptide(NT-proBNP)<br>Galectin-3 (Gal-3) <br>coronary artery bypass graftsurgery (CABG)<br>electrocardiograph testing (ECG)<br>intensivecare unit (ICU)<br>receiver operating characteristic (ROC)<br>Soluble suppression of tumorigenicity 2 (ST2)<br>left atrium (LA)