INS and acute coronary syndrome: POAF may be associated with 13 variables: Age, Mean Arterial Pressure (MAP), Body Mass Index (BMI) > 23 kg/m2, Acute Coronary Syndrome, Albumin, Platelet count, Left Ventricular Ejection Fraction (LVEF), Left Atrial Diameter (LAD) > 40 mm, Insulins, Angiotensin Receptor Blockers, Statins, Preoperative Intra-aortic Balloon Pump and Operative Time > 4 h (h) by univariate analysis (P < 0.05).