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Table 2 Characteristics of patients admitted to the cardiac intensive care unit following cardiac surgery

From: The KDIGO acute kidney injury guidelines for cardiac surgery patients in critical care: a validation study

Characteristic

All (n = 2267)

AKI-1UO (n = 370)

AKI-1 sCr (n = 192)

AKI-1 Both (n = 210)

AKI-2 UO (n = 97)

AKI-2 sCr (n = 92)

AKI-2 Both (n = 33)

Age, mean (sd), years

65.9 (11.6)

67.3 (10.5)

67.6 (12.7)

68.5 (11.8)

67.7 (10.9)

66.7(12.3)

64.4 (12.3)

Female gender, %

27.2

30.8

28.1

26.7

34.0

27.2

24.2

Weight, mean (sd), Kg

81.5 (15.8)

89.4 (16.6)

75.3 (14.0)

87.2 (17.7)

96.5 (17.3)

80.1 (16.3)

89.1 (18.0)

Logistic EuroSCORE, median (Interquartile range)

4.0 (2.1–7.7)

4.4 (2.5–7.7)

7.7 (3.5–18.1)

6.3 (2.8–13.0)

4.3 (2.5–7.6)

9.7 (4.2–18.4)

5.6 (2.3–15.6)

Operation, n (%)

 CABG

1211 (53.4)

177 (47.8)

56 (29.2)

92 (43.8)

49 (50.5)

28 (30.4)

10 (30.3)

 Valve

477 (21.0)

93 (25.1)

50 (26.0)

39 (18.6)

26 (26.8)

23 (25.0)

8 (24.2)

 CABG and Valve

301 (13.3)

60 (16.2)

41 (21.4)

39 (18.6)

13 (13.4)

12 (13.0)

5 (15.2)

 Aortic

122 (5.4)

19 (5.1)

16 (8.3)

16 (7.6)

4 (4.3)

11 (12.0)

3 (9.1)

 Cardiac Transplantation

53 (2.3)

5 (1.4)

19 (9.9)

10 (4.8)

1 (1.0)

8 (8.7)

4 (12.1)

 MCS

39 (1.7)

6 (1.6)

8 (4.2)

6 (2.9)

2 (2.1)

4 (4.3)

2 (6.1)

 Other – minor

20 (0.9)

3 (0.8)

1 (0.5)

5 (2.4)

0 (0.0)

3 (3.3)

1 (3.0)

 Other – major

44 (1.9)

7 (1.9)

1 (0.5)

3 (1.4)

2 (2.1)

3 (3.3)

0 (0)

Urgency, n (%)

 Elective

1321(58.3)

217 (58.6)

99 (51.6)

110 (52.4)

56 (57.7)

42 (45.7)

14 (42.4)

 Urgent

890 (39.3)

145 (39.2)

83 (43.2)

89 (42.4)

38 (39.2)

43 (46.7)

17 (51.5)

 Emergency

40 (1.8)

7 (1.9)

8 (4.2)

7 (3.3)

3 (3.1)

5 (5.4)

1 (3.1)

  Salvage

16 (0.7)

1 (0.3)

2 1.0)

4 (1.9)

0 (0.0)

2 (2.2)

1 (3.1)

CPB time, median (Interquartile range), minutes

101.0 (80.0–130.0)

100.0 (81.0–133.2)

129.0 (97.0–182.0)

107.5 (83.3–132.8)

99.0 (75.5–120.0)

112.0 (90.0–155.0)

123.0 (81.0–157.0)

  1. UO urine output, sCr serum creatinine, CABG coronary artery bypass graft, MCS mechanical circulatory support, CPB cardiopulmonary bypass