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. 2021 Oct 22;13(1):80–86. doi: 10.1055/s-0041-1736549

Table 2. Comparison of biochemical parameters between those with and without AKIN Stage II or III renal impairment.

Parameter 6 h 12 h 24 h
No AKI ( N  = 16) AKI ( N  = 4) p -Value No AKI ( N  = 16) AKI ( N  = 3) p -Value No AKI ( N  = 4) AKI ( N  = 9) p -Value
Median (IQR) Median (IQR) Median (IQR) Median (IQR) Median (IQR) Median (IQR)
Plasma chloride (mmol/L) 107.5 (105, 110) 106.5 (100.5, 107) 0.318 108.5 (106, 110.5) 109 (104, 109) 0.506 109.5 (105, 112) 106 (96, 108) 0.203
Urinary chloride (mmol/L) 15 (15, 38) 15 (15, 30) 0.398 21 (15, 65.5) 15 (15, 68) 0.611 42.5 (15, 89) 48 (15, 72) 0.748
Urinary FeNa (fraction) 0.21 (0.07, 0.33) 0.23 (0.20, 0.28) 0.953 0.15 (0.05, 0.43) 0.08 (0.07, 0.09) 0.758 0.09 (0.05, 0.49) 0.12 (0.08, 0.61) 0.490
Plasma Na (mmol/L) 143 (140, 144) 139 (137, 143) 0.232 141 (140, 143) 140 (136, 145) 0.588 139.5 (137, 142) 134 (132, 140) 0.287
Urinary SID (mmol/L) 129.8 (98.1, 151.9) 92.5 (80.3, 117.7) 0.173 112.5 (82.3, 137.4) 105.4 (101.4, 133.6) 0.999 82.2 (36.2, 93.5) 85.6 (16.9, 124.7) 0.937
Urinary NH 4 (mEq/L) 25 (7, 42) 38 (17, 42) 0.476 37.5 (21.5, 65.5) 41.5 (30, 53) 0.928 35 (22, 99) 57 (6, 73) 0.727
SBE (mmol/L) −3.3 (−5.7, 1.5) −0.9 (−3.5, −0.7) 0.925 −2.8 (−5.2, −1.2) 0.5 (−7.0, 1.1) 0.472 −2.1 (−5.5, −1.1) 0.9 (−10.4, 1.6) 0.692

Abbreviations: AKI, acute kidney injury; AKIN, Acute Kidney Injury Network; IQR, interquartile range; SBE, standard base excess; SID, strong ion difference.