Full cohort | Matched cohort | ||||
---|---|---|---|---|---|
Totala | AKIa | non-AKIa | AKIa | non-AKIa | |
Clinical features | n = 1,030 | n = 287 | n = 743 | n = 257 | n = 257 |
Pre-operative characteristics | |||||
Male gender | 750 (72.8) | 209 (72.8) | 541 (72.8) | 190 (73.9) | 189 (73.5) |
Age (years), mean (IQR) | 65.8 (59 to 75) | 70.0 (64 to 78) | 64.1 (58 to 73) | 69.4 (63 to 77) | 69.3 (65 to 76) |
Smoker | |||||
Present | 487 (47.3) | 147 (51.2) | 340 (45.8) | 130 (50.6) | 129 (50.2) |
Never | 357 (34.7) | 88 (30.7) | 269 (36.2) | 82 (31.9) | 83 (32.3) |
Previous | 186 (18.1) | 52 (18.1) | 134 (18.0) | 45 (17.5) | 45 (17.5) |
BMI (kg/m2) | |||||
<25 | 287 (27.9) | 85 (29.6) | 202 (27.2) | 72 (28.0) | 63 (24.5) |
25 to 30 | 425 (41.3) | 110 (38.3) | 315 (42.4) | 103 (40.0) | 100 (38.9) |
>30 | 318 (30.9) | 92 (32.1) | 226 (30.4) | 82 (31.9) | 94 (36.6) |
Previous ischemic peripheral disease | 57 (5.5) | 19 (6.6) | 38 (5.1) | 17 (6.6) | 13 (5.1) |
Previous stroke | 104 (10.1) | 37 (12.9) | 67 (9.0) | 32 (12.5) | 29 (11.3) |
Previous myocardial infarction | 256 (24.9) | 66 (23.0) | 190 (25.6) | 63 (24.5) | 65 (25.3) |
History of arrhythmias | 154 (15.0) | 60 (20.9) | 94 (12.7) | 49 (19.1) | 51 (19.8) |
Diabetes mellitus | 166 (16.1) | 58 (20.2) | 108 (14.5) | 50 (19.5) | 55 (21.4) |
Dyslipidemia | 570 (55.3) | 156 (54.3) | 414 (55.7) | 141 (54.9) | 147 (57.2) |
Hypertension | 585 (56.8) | 166 (57.8) | 419 (56.4) | 146 (56.8) | 153 (59.5) |
Normal <140 and <90b | 455 (44.2) | 121 (42.2) | 324 (43.6) | 111 (43.2) | 104 (40.5) |
Grade I 140 to 159 or 90 to 99b | 306 (29.7) | 80 (27.9) | 226 (31.4) | 70 (27.2) | 91 (23.7) |
Grade II 160 to 179 or 100 to 109b | 189 (18.4) | 61 (21.3) | 128 (17.2) | 56 (21.8) | 42 (16.3) |
Grade III > =180 or > =110b | 90 (8.7) | 25 (8.7) | 65 (8.8) | 20 (7.8) | 20 (7.8) |
Charlson comorbidity index | |||||
Low (score 0) | 396 (38.5) | 91 (31.7) | 305 (41.5) | 86 (33.5) | 91 (35.0) |
Medium (score 1 to 2) | 456 (44.3) | 135 (47.0) | 321 (43.2) | 119 (46.3) | 112 (43.6) |
High (score >3) | 178 (17.3) | 61 (21.3) | 117 (15.7) | 52 (20.2) | 54 (21.0) |
Baseline creatinine (μmol/L), mean (IQR) | 85.0 (68 to 98) | 94.2 (73 to 109) | 81.4 (66 to 92) | 90.9 (72 to 107) | 91.3 (73 to 105) |
euroSCORE, mean (IQR)c | 5.2 (3 to 7) | 6.4 (4 to 8) | 4.7 (3 to 7) | 6.1 (4 to 8) | 6.1 (4 to 8) |
Low risk (score 0 to 2) | 199 (19.3) | 30 (10.5) | 169 (22.8) | 30 (11.7) | 28 (10.9) |
Medium risk (score >2 to 5) | 369 (35.8) | 82 (28.6) | 287 (38.6) | 78 (30.4) | 81 (31.5) |
High risk (score >5) | 462 (44.9) | 175 (70.0) | 287 (38.6) | 149 (58.0) | 148 (57.6) |
Surgical procedure characteristics | |||||
Type of surgery | |||||
Valved | 313 (30.4) | 84 (29.3) | 229 (30.8) | 77 (30.0) | 78 (30.4) |
CABG | 372 (36.1) | 85 (29.6) | 287 (38.6) | 80 (31.1) | 71 (27.6) |
Valve and CABG | 158 (15.3) | 59 (20.6) | 99 (13.3) | 51 (19.8) | 54 (17.1) |
Othere | 187 (18.2) | 59 (20.6) | 128 (17.2) | 49 (19.1) | 54 (17.1) |
Extra corporal circulation | 910 (88.4) | 255 (88.9) | 655 (88.2) | 227 (88.3) | 223 (86.8) |