CRP and diabetes mellitus: Patients in the PC-AKI group also had lower prevalence of preoperative therapy (76.6% vs. 84.8%; P < 0.001), lower eGFR (83.02/38.1 vs. 84.61/27.41; P = 0.012), lower left ventricular ejection fractions (LVEF) (59.5/17.9 vs. 62.8/14.53; P < 0.001), higher CRP (4.4/14.8 vs. 2/5.8, P < 0.001), and higher proportion of excess volumes of CM (6.6% vs. 4.2%, P = 0.005), and more prevalence of diabetes mellitus (28.2% vs. 23.2%, P = 0.003).