Table 2.
Intraoperative patient characteristics of the whole series and according to the occurrence of postoperative AKI
| Variables | Whole series N = 457 |
No AKI N = 390 (85%) |
AKI patients N = 67 (15%) |
P Value |
|---|---|---|---|---|
| Surgical approach | 0.046 | |||
| Laparoscopic | 128 (28) | 116 (30) | 12 (18) | |
| Open | 329 (72) | 274 (70) | 55 (82) | |
| Major hepatectomy | 241 (53) | 194 (50) | 47 (70) | 0.002 |
| Any type of vascular clamping | 296 (65) | 249 (64) | 47 (70) | 0.318 |
| Type of clamping | 0.535 | |||
| Pedicle intermittent | 188 (41) | 160 (41) | 28 (42) | |
| Pedicle continuous | 63 (14) | 53 (14) | 10 (15) | |
| Standard total vascular exclusion | 34 (7) | 26 (7) | 8 (12) | |
| Vascular exclusion preserving the caval flow | 11 (2) | 10 (3) | 1 (1.5) | |
| No clamping | 161 (35) | 141 (36) | 20 (30) | |
| Clamping time (minutes) | 22 ± 23 | 22 ± 22 | 26 ± 27 | 0.163 |
| Red blood cell transfusion | ||||
| Yes | 82 (18) | 61 (16) | 21 (31) | 0.002 |
| Number of red blood cells units transfused | 0.8 ± 2.8 | 0.7 ± 2.0 | 1.8 ± 5.5 | 0.003 |
| Duration of operation (minutes) | 208 ± 81 | 202 ± 76 | 249 ± 97 | <0.001 |
| Duration of operation (minutes) > 300 min | 33 (7) | 10 (3) | 23 (34) | 0.008 |
Footnotes: AKI, acute kidney injury; KDIGO, Kidney Disease Improving Global Outcomes; SD, standard deviation.
No AKI includes patients without any occurrence of KDIGO criteria.
Categorical variables are presented as numbers (percentages) and continuous variables are expressed as the means ± standard deviation.