| AKI patients | RIFLE risk | RIFLE injury | RIFLE failure | P- value |
---|---|---|---|---|---|
 | (n = 409) | (n = 226; 55.2%) | (n = 87; 21.3%) | (n = 96; 23.5%) |  |
Intraoperative data | |||||
Isolated CABG | 23% (94) | 22.1% (50) | 26.4% (23) | 21.9% (21) | 0.87 |
Isolated valve surgery | 51.6% (207) | 51.3% (116) | 49.4% (43) | 50.0% (48) | 0.82 |
CABG + valve surgery | 11% (45) | 12.8% (29) | 4.6% (4) | 12.5% (12) | 0.32 |
Other cardiac surgery | 15.4% (63) | 13.7% (31) | 19.5% (17) | 15.6% (15) | 0.68 |
Emergent surgery | 12.2% (50) | 9.3% (21) | 7% (8) | 22.9% (22) | 0.004 |
Number of bypass | 2.29 ± 0.92 | 2.3 ± 0.9 | 2.5 ± 0.8 | 2.1 ± 1.0 | 0.21 |
ACC time (minutes) | 87 ± 37 | 81 ± 32 | 96 ± 41 | 92 ± 39 | 0.004 |
CPB time (minutes) | 135 ± 55 | 123 ± 44 | 147 ± 64 | 151 ± 62 | <0.001 |
Postoperative data | |||||
Ventilation time (hours) | 139 ± 229 | 84 ± 176 | 204 ± 264 | 209 ± 268 | <0.001 |
PaO2/FiO2 ratio on admission | 315 ± 106 | 325 ± 105 | 320 ± 85 | 310 ± 115 | 0.01 |
PaO2/FiO2 ratio 12 h after admission | 278 ± 93 | 300 ± 85 | 290 ± 105 | 270 ± 96 | 0.003 |
PaO2/FiO2 ratio 24 h after admission | 270 ± 90 | 295 ± 78 | 259 ± 91 | 221 ± 94 | <0.001 |
Reintubation | 2.5% (10) | 1.8% (4) | 3.4% (3) | 3.2% (3) | 0.08 |
Tracheostomy | 4.7% (19) | 4.1% (9) | 8.0% (7) | 3.2% (3) | 0.01 |
Need of vasoactive drugs (hours) | 195 ± 210 | 137 ± 149 | 242 ± 207 | 267 ± 274 | <0.001 |
LCOS | 74.1% (303) | 62.4% (141) | 87.3% (76) | 89.5% (86) | <0.001 |
PMI | 23.0% (94) | 14.6% (33) | 28.7% (25) | 37.5% (36) | <0.001 |
IABP support | 18.3% (75) | 15.9% (36) | 16.0% (14) | 26.1% (25) | 0.04 |
Atrial fibrilation | 59.9% (245) | 52.2% (118) | 64.4% (56) | 74.0% (71) | <0.001 |
AL on admission (mmol · L-1) | 3.1 ± 2.3 | 3.1 ± 2.2 | 2.9 ± 3.3 | 3.3 ±2.5 | 0.11 |
AL 24 h after admission (mmol · L-1) | 2.6 ± 1.9 | 2.2 ±1.3 | 2.7 ± 1.7 | 3.3 ± 2.7 | <0.001 |
sCr peak after surgery (mmol · L-1) | 205 ± 113 | 143 ± 52 | 214 ± 72 | 342 ± 126 | <0.001 |
Albumin 48 h after surgery (g · L-1) | 26.5 ± 4.1 | 27.0 ± 3.4 | 26.0 ± 3.5 | 24.0 ± 5.0 | <0.001 |
Hemorrhage-related re-exploration | 9.0% (37) | 5.3% (12) | 13.8% (12) | 13.5% (13) | 0.014 |
Pericardial tamponade | 2.7% (11) | 2.2% (5) | 2.3% (2) | 4.2% (4) | 0.59 |
Drainage loss first 12 h (mL) | 496 ± 414 | 448 ± 368 | 523 ± 498 | 581 ± 422 | 0.026 |
Major bleeding | 10.5% (43) | 10.1% (23) | 10.3% (9) | 11.4% (11) | 0.65 |
Re-exploration | 5.1% (27) | 4.4% (10) | 4.6% (4) | 13.5% (13) | 0.001 |
Need for blood products (Units) | 3.3 ± 4.6 | 2.6 ± 4.2 | 4.23 ± 4.9 | 4.3 ± 4.9 | 0.001 |
Stroke | 4.4% (18) | 3.1% (7) | 3.4% (3) | 8.3% (8) | 0.09 |
Septicemia | 22.7% (93) | 13.2% (30) | 27.5% (24) | 40.6% (39) | <0.001 |
SAPS II | 32.3 ± 12.8 | 27.7 ± 9.5 | 34.4 ± 13.0 | 40.9 ± 14.4 | <0.001 |
SAPS III | 48.4 ± 12.3 | 44.1 ± 9.9 | 49.2 ± 11.5 | 56.9 ± 13.2 | <0.001 |
APACHE II | 16.1 ± 6.3 | 13.7 ± 4.3 | 17.0 ± 6.8 | 20.9 ± 7.1 | <0.001 |
APACHE III | 67.0 ± 24.0 | 58.4 ± 17.4 | 69.6 ± 23.4 | 86.0 ± 27.5 | <0.001 |
Mean Pre-ICU stay (days) | 8.7 ± 28.8 | 6.2 ± 7.8 | 7.7 ± 9.3 | 15.7 ± 57.3 | 0.023 |
Mean ICU stay (days) | 15.2 ± 20.3 | 12.0 ± 15.8 | 18.0 ± 22.8 | 20.3 ± 25.4 | 0.001 |
Mean hospital stay (days) | 36.1 ± 44.5 | 31.5 ± 34.2 | 38.5 ± 32.0 | 44.6 ± 68.0 | 0.046 |
In-hospital mortality | 28.6% (117) | 10.6% (24) | 42.5% (37) | 58.3% (56) | <0.001 |