Skip to main content
. 2021 Mar 19:1–11. doi: 10.1159/000513948

Table 2.

Urinalysis and urine electrolytes in the studied groups

No AKI (n = 158) CA-AKI (n = 118) HA-AKI (n = 87) p value
Urinalysis
 Specific gravity 1.020 (1.015–1.027) 1.018 (1.015–1.024) 1.018 (1.014–1.025) 0.380
 Proteinuria (dipstick)
  Negative 44 (28) 24 (21) 32 (36)
  1+ 58 (37) 45 (39) 26 (29) 0.232
  2+ 47 (30) 40 (35) 29 (32)
  3+ 9 (6) 6 (5) 3 (3)
 Hematuria (dipstick)
  Negative 102 (65) 53 (46) 36 (40)
  1+ 35 (22) 28 (24) 19 (21) <0.001
  2+ 12 (8) 23 (20) 20 (22)
  3+ 9 (6) 11 (10) 13 (14)
 Leukocyturia, n (%) 48 (30) 52 (45) 57 (63) <0.001
 Hematuria (sediment), n (%) 33 (21) 32 (28) 52 (58) <0.001
Urine electrolytes
 Urine sodium, mmol/L 28 (15–46) 27 (16–43) 22 (12–44) 0.532
  UNa <20 mmol/L, n (%) 24 (37) 34 (43) 36 (32)
  UNa 20–40 mmol/L, n (%) 20 (31) 21 (27) 82 (32) 0.555
  UNa >40 mmol/L, n (%) 21 (32) 24 (30) 61 (32)
 FE sodium, % 0.17 (0.08–0.45) 0.30 (0.12–0.62) 0.22 (0.14–0.62) 0.046
  FENa <0.5%, n (%) 45 (78) 53 (71) 75 (71)
  FENa 0.5–1.0%, n (%) 9 (16) 13 (17) 10 (9) 0.021
  FENa 1.0–2.0%, n (%) 4 (7) 2 (3) 14 (13)
  FENa >2%, n (%) 0 (0) 7 (9) 7 (7)

CA-AKI, community-acquired acute kidney injury; HA-AKI, hospital-acquired acute kidney injury; FE, fractional excretion.