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Table 1 Preoperative, operative, and postoperative clinical data of the patients after on-pump cardiac surgery according to AKIN levels on postoperative day 4

From: NGAL expression during cardiopulmonary bypass does not predict severity of postoperative acute kidney injury

  AKIN level 0 AKIN level 1 AKIN level 2 AKIN level 3
Males/Females 30/15 15/6 5/3 2/5
Age (years) 62.9 ± 14.1 72.5 ± 9.3 70.5 ± 4.4 74.9 ± 3.3
Weight [16] 79.9 ± 16.2 80.9 ± 15.8 93.0 ± 25.6 83.8 ± 13.7
CPB duration (minutes) 139.3 ± 50.2 148.1 ± 50,8 152.9 ± 59.7 130.3 ± 30.9
Stay in OR (minutes) 249.7 ± 71.6 248.6 ± 73.4 267.3 ± 78.6 241.9 ± 28.9
Intraoperative urine output (ml/kg) 10.4 ± 15.8 7.2 ± 6.7 4.9 ± 3.8 18.3 ± 36.6
Early postoperative urine output (5 h) (ml/kg) 8.7 ± 4.7 7.4 ± 5.0 5.2 ± 4.8 5.7 ± 3.5
Peak free Hb in blood (mg/100 mL) 57.6 ± 29.0 59.3 ± 20.1 71.3 ± 23.2 62.5 ± 31.1
Peak free Hb in urine (mg/100 mL) 22.2 ± 38.3 13.8 ± 12.1 20.0 ± 16.9 34.0 ± 61.0
ICU stay (days) 2.5 ± 2.3 4.9 ± 6.3 4.3 ± 3.0 6.4 ± 3.8
  1. CPB cardiopulmonary bypass, OR operating room, Hb hemoglobin, ICU intensive care unit