Table 2 ABG_s and laboratory parameters on admission among all studied groups

Arterial pH

7.39 ± 0.07

7.43 ± 0.07

7.43 ± 0.06

2.832

0.06

PaO₂, mmHg

58.6 ± 14.1

63.6 ± 12.2

61.3 ± 9.8

1.586

0.21

PaO₂/FIO₂

305.3 ± 50.6

345.9 ± 38.0

335.8 ± 41.4

5.474

0.005a

WBCs × 10³/mm³

10.79 ± 2.8

14.47 ± 3.9

17.40 ± 5.3

14.137

< 0.001^b

Prothrombin time, s

15.3 ± 2.1

12.5 ± 1

11.6 ± 1.2

15.091

< 0.001a

Serum urea, mg/dl

39.7 ± 11.4

27.1 ± 7.7

22.6 ± 6.7

9.432

< 0.001a

Serum albumin, g/dl

2.9 ± 0.5

3.2 ± 0.4

3.2 ± 0.5

4.183

0.016a