Table 2.
Clinical data of delirium group and non-delirium group
| Variables | Delirium (N = 106) | Non-delirium (N = 174) | P |
|---|---|---|---|
| Preoperative data | |||
| First blood sugar (mmol/l), mean (SD) | 8.54 (4.57) | 7.16 (1.82) | < 0.001a |
| White blood cell (×109/l), mean (SD) | 11.27 (4.51) | 11.63 (4.63) | 0.518a |
| Neutrophil (× 109/l), mean (SD) | 11.38 (7.47) | 12.42 (7.31) | 0.250a |
|
Red blood cell (×109/l), mean (SD) |
4.29 (0.79) | 4.42 (0.604) | 0.144a |
| Hemoglobin (g/l), mean (SD) | 129.68 (20.83) | 134.14 (18.09) | 0.060a |
| Anemia, n (%) | 15 (14.2) | 24 (13.8) | 0.933b |
| Intraoperative data | |||
| State of consciousness, n (%) | 0.781b | ||
| Quiet | 43 (40.6) | 78 (44.8) | |
| Irritability | 45 (42.5) | 68 (39.1) | |
| Coma | 18 (17.0) | 28 (16.1) | |
| ASA class, n (%) | 0.304b | ||
| Level III | 20 (18.9) | 40 (23.0) | |
| Level IV and above | 86 (81.1) | 134 (77.0) | |
| Blood loss (ml), mean (SD) | 842.26 (343.15) | 809.20 (365.68) | 0.453a |
| Allogeneic blood transfusion (ml), mean (SD) | 359.06 (280.19) | 334.20 (275.17) | 0.467a |
|
Erythrocyte transfusion, (u) mean (SD) |
2.99 (2.88) | 2.93 (2.71) | 0.870a |
|
Platelet transfusion, (u), mean (SD) |
2.39 (2.82) | 1.97 (2.94) | 0.246a |
| Surgery duration (min), median (IQR) | 288.5 (250.8334.3) | 285.0 (249.5333.0) | 0.877c |
| CPB (min), median (IQR) | 142.0 (125.8171.3) | 140.0 (115.0,176.0) | 0.375c |
| Aortic cross-clamping duration (min), median (IQR) | 60.0 (45.8,84.0) | 52.0 (40.0,77.5) | 0.010c |
|
Lowest temperature, (°C) mean (SD) |
23.22 (2.53) | 23.37 (2.51) | 0.629a |
| SCP (min), median (IQR) | 12.0 (10.0,15.5) | 12.0 (10.0,15.3) | 0.168c |
| Postoperative data | |||
| APACHE-II, mean (SD) | 16.17 (4.05) | 12.40 (3.33) | < 0.001a |
| Analgesics and sedatives, n (%) | < 0.001b | ||
| 0–2 | 30 (28.3) | 101 (58.0) | |
| 3–4 | 63 (59.4) | 63 (36.2) | |
| > 4 | 13 (12.3) | 10 (5.7) | |
| Mechanical ventilation duration (hours), median (IQR) | 63.5 (38.00,139.0) | 40.32 (26.58,82.25) | < 0.001c |
| Hypoxemia, n (%) | 41 (38.7) | 27 (15.5) | < 0.001b |
| No | 65 (61.3) | 147 (84.5) | |
| ICU stay, median (IQR) | 7.0 (5.0,9.0) | 5.0 (4.0,7.0) | < 0.001c |
|
Hospitalization days, median (IQR) |
20.0 (15.0,26.0) | 18.0 (14.0,23.0) | 0.759c |
a Student’s t test. b χ2 test. c Wilcoxon rank-sum test
ASA American Society of Anesthesiologists, SCP Selective cerebral perfusion, APACHE-II Acute physiology and chronic health evaluation II, ICU Intensive care unit