Table 2.

Characteristics of patients with AKI according to two different criteria

VariablesKDIGO AKI CriteriaExpanded Criteria
N2235
AKI occurrence on admission3/22 (13.6%)13/35 (37.1%)
AKI occurrence during hospital stay19/22 (86.4%)22/35 (62.9%)
Classification
 Prerenal AKI0/22 (0%)2/35 (5.7%)
 Rhabdomyolysis-induced AKI4/22 (18.2%)4/35 (11.4%)
 Suspected intrinsic AKI18/22 (81.8%)29/35 (82.9%)
AKI stage
 14/22 (18.2%)16/35 (45.7%)
 27/22 (31.8%)8/35 (22.9%)
 311/22 (50.0%)11/35 (31.4%)
AKI recovery (total)4/22 (18.2%)16/35 (45.7%)
 Prerenal AKI recovery2/2 (100%)
 Rhabdomyolysis-induced AKI recovery1/4 (25%)1/4 (25%)
 Suspected intrinsic AKI recovery3/18 (16.7%)13/29 (44.8%)
 Stage 1 recovery1/4 (25.0%)12/16 (75.0%)
 Stage 2 recovery3/7 (42.9%)4/8 (50.0%)
 Stage 3 recovery0/11 (0%)0/11 (0%)
The mean time for AKI recovery6 (5–8)a6 (5–11)a
 Total death19/22 (86.4%)20/35 (57.1%)
  Death in prerenal AKI0/0 (0%)0/2 (0%)
  Death in rhabdomyolysis-induced AKI3/4 (75.0%)3/4 (75.0%)
  Death in suspected intrinsic AKI16/18 (88.9%)17/29 (58.6%)
  Death in AKI stage 13/4 (75.0%)4/16 (25.0%)
  Death in AKI stage 26/7 (85.7%)6/8 (75.0%)
  Death in AKI stage 310/11 (90.9%)10/11 (90.9%)
  • Data are presented as number and percentage.

  • a The unit of mean time for AKI recovery is day.