Table 1 Characteristics and hemolysis index in different groups.

Age (years)

53 (38-61)

68 (59-78)

59 (45-70)

<0.01

Emergency surgery, n (%)

4 (7)

10 (4)

177 (10)

<0.01

Lowest mean arterial pressure in first 24 hours (mmHg)

64 (60-69)

65 (61-69)

71 (64-82)

<0.01

Norepinephrine use in first 24 hours, n (%)

49 (88)

143 (58)

363 (21)

<0.01

Renal replacement therapy during ICU stay, n (%)

22 (39)

13 (5)

109 (6)

<0.01

Transfusion during first 48 hours, n (%)

41 (73)

76 (31)

223 (13)

<0.01

Renal failure at admission, n (%)

35 (63)

51 (21)

440 (26)

<0.01

SOFA score at admission

9 (7-11)

6 (4-7)

3 (1-5)

<0.01

Mortality, n (%)

26 (46)

15 (6)

186 (11)

<0.01

Initial hemolysis index

7 (2-18)

11 (4-21)

2 (0-4)

<0.01

Median hemolysis index

2 (1-4)

3 (1-5)

2 (0-3)

<0.01