Table 1.
Demographic, surgical and clinical characteristics of all patients and according to presence or absence of acute kidney injury.
| Clinical Characteristics | All (n=63) | AKI (n = 15) | No AKI (n = 48) |
|---|---|---|---|
| Male sex, n (%) | 32 (51%) | 6 (40%) | 26 (54%) |
| Weight, kg | 3.2 (2.9, 3.5) | 3.2 (2.6, 3.4) | 3.3 (2.9, 3.5) |
| Gestational age at surgery, weeks | 39.9 (39.1, 40.9) | 39.6 (38.9, 40.0) | 40.0 (39.4,41.0) |
| Age at surgery, days | 7.0 (6.0, 8.5) | 7.0 (5.0, 10.5) | 7.0 (6.0, 8.0) |
| Highest pre-op creatinine (mg/dL) | 0.8 (0.7, 1.0) | 0.9 (0.8, 1.0) | 0.8 (0.7, 0.9) |
| RACHS-1 score | |||
| 1 | 0 (0%) | 0 (0%) | 0 (0%) |
| 2 | 6 (10%) | 1 (7%) | 5 (10%) |
| 3 | 19 (30%) | 2 (13%) | 17 (35%) |
| 4 | 21 (33%) | 6 (40%) | 15 (31%) |
| 5 | 1 (2%) | 1 (7%) | 0 (0%) |
| 6 | 16 (25%) | 5 (33%) | 11 (23%) |
| CPB time, minutes | 155 (124, 178) | 163 (136, 186) | 155 (123, 178) |
| DHCA, n | 27 (43%) | 9 (60%) | 18 (38%) |
| Aortic cross clamp, minutes | 70 (43, 85) | 61 (42, 94) | 71 (43, 82) |
| Total fluid intake (36 hours), mLs | 588 (492, 672) | 619 (513, 669) | 578 (479, 670) |
| Total fluid output (36 hours), mLs | 573 (442, 688) | 425 (292, 573) | 620 (473, 776) |
| Total urine output (36 hours), mLs | 470 (310, 609) | 297 (159, 376) | 526 (401, 685) |
| Continuous furosemide drip, n (%) | 38 (60%) | 11 (73%) | 27 (56%) |
| Intermittent chlorothiazide, n (%) | 39 (62%) | 9 (60%) | 30 (63%) |
| Mechanical ventilation, days | 3.8 (2.0, 5.0) | 5.8 (4.1, 20.2) | 3.0 (1.9, 4.5) |
| ICU length of stay, days | 6.2 (4.8, 9.7) | 8.5 (6.4, 22.5) | 5.8 (4.2, 7.8) |
| Hospital length of stay, days | 17.0 (9.5, 24.0) | 24.0 (18.5, 41.0) | 15.5 (9.0, 22.0) |
| Hospital charges, thousands of dollars | 194 (148, 267) | 266 (214, 401) | 180 (140, 213) |
Data are reported as number (%) or median (interquartile range), as appropriate. ICU, intensive care unit; CPB, cardiopulmonary bypass; RACHS, risk adjustment for congenital heart surgery; DHCA, direct hypothermic circulatory arrest.