CRP and atrial fibrillation: Multivariate analysis identified the following hematological/biochemical parameters as significant independent predictors of postoperative AF development: low hematocrit (OR, 2.1), low thrombocyte count (OR, 5.6), low LDL (OR, 1.6), high direct bilirubin (OR, 2.0), low GFR (OR, 1.6), and high CRP (OR, 2.0).