Table 2.
Urinary sodium, urinary creatinine, fractional excretion of sodium, and urinary NGAL in patients with sustained and transient acute kidney injury and normal postoperative serum creatinine
| Sustained AKI N = 9 |
Transient AKI N = 8 |
No AKI N = 493 |
P value | |
|---|---|---|---|---|
| Urinary sodium (mmol/l) | 60.9 ± 34.8 | 75.5 ± 41.7 | 114.6 ± 54.7 | P < 0.05 |
| P values post hoc test (Tukey) |  |
|||
| Urinary creatinine (mg/dl) | 93.6 ± 64.6 | 108.2 ± 50.7 | 68.6 ± 55.9 | NS |
| FENa | 2.07 ± 3.74 | 1.45 ± 1.57 | 2.66 ± 12.27 | NS |
| NGAL (ng/ml) | 204.8 ± 412.0 | 30.8 ± 25.9 | 31.9 ± 113.0 | P < 0.0001 |
| P values post hoc test (Tukey) |  |
|||
One-way analysis of variance and Tukey’s post hoc multiple comparison test to compare mean values across the groups.
AKI, acute kidney injury; FENa, fractional excretion of sodium; NGAL, neutrophil gelatinase–associated lipocalin; NS, not significant.