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Table 1 The preoperative characteristics and blood analysis

From: Plasma interleukin-6 is a potential predictive biomarker for postoperative delirium among acute type a aortic dissection patients treated with open surgical repair

Characteristics All patients
(n = 221)
POD patients
(n = 31)
Non-POD patients
(n = 190)
P values
Age (years) 52.81 ± 10.75 56.48 ± 11.68 52.22 ± 10.50 0.040*
Male (%) 162 (73.30%) 20 (64.52%) 142 (74.74%) 0.233
Education (years) 10.71 ± 2.88 10.68 ± 3.00 10.71 ± 2.87 0.945
Body weight (kg) 68.52 ± 8.28 67.48 ± 8.33 68.69 ± 8.28 0.453
Height (cm) 165.30 ± 5.39 164.97 ± 5.41 165.35 ± 5.40 0.715
Smoke (%) 80 (36.20%) 14 (45.16%) 66 (34.74%) 0.263
Alcoholism (%) 21 (9.50%) 8 (25.80%) 13 (6.84%) 0.003*
Hypertension (%) 140 (63.35%) 19 (61.29%) 121 (63.68%) 0.798
Diabetes mellitus (%) 5 (2.26%) 1 (3.23%) 4 (2.11%) 0.534
Coronary artery disease (%) 10 (4.52%) 0 (0%) 10 (5.26%) 0.364
Ejection fraction (%) 64.46 ± 5.86 66.36 ± 6.04 64.12 ± 5.80 0.126
NYHA class     0.067
 I 41 (18.55%) 1 (3.23%) 40 (21.05%)  
 II 139 (62.90%) 23 (74.19%) 116 (61.05%)  
 III 35 (15.84%) 5 (16.13%) 30 (15.79%)  
 IV 6 (2.71%) 2 (6.45%) 4 (2.11%)  
ASA class     0.314
 I 0 (0.0%) 0 (0.0%) 0 (0.0%)  
 II 0 (0.0%) 0 (0.0%) 0 (0.0%)  
 III 0 (0.0%) 0 (0.0%) 0 (0.0%)  
 IV 204 (92.31%) 30 (96.78%) 174 (91.58%)  
 V 17 (7.69%) 1 (3.23%) 16 (8.42%)  
 VI 0 (0.0%) 0 (0.0%) 0 (0.0%)  
Leukocytes (109/l) 12.41 ± 4.43 14.65 ± 5.64 11.97 ± 4.03 0.035*
Hb (g/l) 132.94 ± 19.65 129.59 ± 29.32 133.60 ± 17.25 0.541
Hct (%) 39.79 ± 5.77 38.43 ± 8.39 39.96 ± 5.02 0.415
Creatinine (μmol/L) 96.70 ± 37.80 101.12 ± 44.29 95.89 ± 36.63 0.543
Albumin (g/l) 38.40 ± 5.09 38.46 ± 6.39 38.39 ± 4.83 0.957
Glucose (mmol/l) 5.78 ± 0.98 5.60 ± 0.89 5.81 ± 0.99 0.271
Lactate (mmol/l) 1.57 ± 0.54 1.69 ± 0.58 1.55 ± 0.53 0.175
Na + (mmol/l) 138.30 ± 3.15 138.55 ± 3.39 138.27 ± 3.12 0.654
PCT (ng/ml) 0.11 (0.05, 0.34) 0.26 (0.06, 0.01) 0.10 (0.05, 0.27) 0.082
IL-6 (pg/ml) 49.10 (30.68, 96.40) 119.20 (58.75, 170.40) 45.30 (30.00, 82.80) 0.000*
ALT (IU/L) 24.00 (15.00, 41.50) 25.00 (15.00, 49.25) 23.00 (15.00, 40.00) 0.658
AST (IU/L) 26.00 (19.00, 42.50) 29.00 (19.00, 82.25) 26.00 (19.00, 38.50) 0.284
  1. ASA American Society of Anesthesiologists, NYHA New York Health Association, Smoke smoking longer than 2 months prior to surgery and more than 10 cigarettes a day, Alcoholism consuming 7–14 drinks per week, Hb hemoglobin, Hct hematocrit, PCT procalcitonin, IL-6 interleukin-6, ALT glutamate aminotransferase, AST glutamate aminotransferase, CRP C-reactive protein; * P < 0.05