Table 1.
Baseline characteristics of patients and main outcomes according to acute kidney injury categorization
| Characteristics | No AKI (n: 21) | Transient AKI (n: 25) | Persistent AKI (n: 37) | Overall (n: 83) |
|---|---|---|---|---|
| Male gender, n (%) | 10 (47) | 20 (80) | 24 (65) | 54 (65) |
| Medical admission, n (%) | 8 (38) | 11 (44) | 23 (62) | 42 (51) |
| Age, years | 50 (38; 59) | 43 (22; 64) | 54 (32; 69) | 51 (31; 64) |
| SAPS 3 | 41 ± 15a | 45 ± 14a | 53 ± 12 | 47 ± 16 |
| Mechanical ventilation, n (%) | 12 (57) | 14 (56) | 16 (43) | 42 (51) |
| Vasopressor therapy, n (%) | 5 (24) | 11 (44) | 18 (49) | 34 (41) |
| Main diagnosis, n (%) | ||||
| Multiple trauma | 3 (14) | 12 (48) | 7 (19) | 22 (26) |
| Neurological syndromes | 7 (33) | 5 (20) | 8 (22) | 20 (24) |
| Sepsis | 3 (14) | 2 (8) | 13 (35) | 18 (22) |
| Acute abdomen | 2 (9) | 4 (16) | 3 (8) | 9 (11) |
| Associated diseases, n (%) | ||||
| Arterial hypertension | 9 (42) | 8 (32) | 17 (46) | 34 (41) |
| Diabetes mellitus | 4 (19) | 2 (8) | 8 (22) | 14 (17) |
| Solid neoplasms | 2 (9) | 3 (12) | 5 (13) | 10 (12) |
| Chronic heart failure | 1 (5) | 1 (4) | 8 (22) | 10 (9) |
| Coronary arterial disease | 3 (14) | 0 (0) | 4 (11) | 6 (8) |
| RRTb, n (%) | 0 | 0 | 8 (22) | 8 (10) |
| ICU mortalityb, n (%) | 4 (19) | 5 (20) | 14 (38) | 23 (27) |
| Hospital mortalityb, n (%) | 4 (19) | 5 (20) | 17 (46) | 26 (31) |
RRT renal replacement therapy, ICU intensive care unit, AKI acute kidney injury
ap < 0.05 compared to persistent AKI
bp < 0.05, using Chi-square with Yates correction