Table 1: Demographic and perioperative sample characteristics.

𝑛 (%)Median (IR)

Gender
 Male102 (68.0)
 Female48 (32.0)
Age (years)66 (15)
 ≤6678 (52.0)
 >6672 (48.0)
BMI27.6 (8.4)
 Normal49 (32.7)
 Overweight/obese101 (67.3)
Chronic pulmonary disease
 No123 (82.0)
 Yes27 (18.0)
Diabetes
 No101 (67.3)
 Yes49 (32.7)
Type of surgery
 Coronary artery bypass grafting (Type I)67 (44.7)
 Valve disease repair (Type II)41 (27.3)
 Aorta aneurysm repair17 (11.3)
 Types I and II18 (12.0)
 Other*7 (4.6)
Preoperative serum Cr (mg/dL)1 (0.4)
 ≤1.4124 (82.7)
 >1.426 (17.3)
Mean intraoperative blood glucose (mg/dL)130 (36)
 ≤13078 (52.0)
 >13072 (48.0)
Preoperative IABP
 No146 (97.3)
 Yes4 (2.7)
CPB
 No16 (10.7)
 Yes134 (89.3)
EFLV (%)55 (15)
 ≤55105 (70.0)
 >5545 (30.0)
Duration of surgery (min)250 (110)
 ≤25076 (50.7)
 >25074 (49.3)
Duration of CPB (min)125 (69)
 ≤12576 (50.7)
 >12574 (49.3)
Preoperative AF
 No133 (88.7)
 Yes17 (11.3)
Emergency
 No135 (90.0)
 Yes15 (10.0)
Ischemic time (min)78 (54)
 ≤7876 (50.7)
 >7874 (49.3)
RBC
 No96 (64.0)
 Yes54 (36.0)
Logistic EuroSCORE (%)5.4 (7.3)
 ≤5.475 (50.0)
 >5.475 (50.0)
30-day mortality
 Alive130 (86.7)
 Nonalive20 (13.3)
ICU-LOS (days)2 (3)
 ≤276 (50.7)
 >274 (49.3)

AF: atrial fibrillation, BMI: body mass index, CPB: cardiopulmonary bypass, Cr: creatinine, EFLV: ejection fraction of the left ventricle, EuroSCORE: European system for cardiac operative risk evaluation, IABP: intraaortic balloon pump, ICU: intensive care unit, LOS: length of stay, RBCs: red blood cells.
*Another category refers to 7 patients who have undergone the closure of an atrial septal defect or a valve surgery in conjunction with aorta aneurysm repair.