Table 1 Patient characteristics

Age, yr

38 [34–43]

72 [68–82]

57 [42–71]

58 [56–76]

Sex, M/F, n

2/3

3/3

4/5

9/4

Septic shock, n

–

–

5

10

SAPS II at admission

–

24 [21–26]

52 [49–57]

53 [46–57]

PaO₂/FiO₂,^a mmHg

–

145 [130–201]

220 [202–223]

105 [98–122]

PEEP,^a mmHg

–

5 [5–7]

5 [5–7]

8 [8–12]

Lung Injury Score^a

–

–

1.5 [1.25–1.75]

2.25 [2–2.25]

Causes of ARDS/ALI, n

 Direct

–

–

6

8

  Pneumonia

5

7

  Gastric inhalation

1

1

 Indirect

–

–

3

5

  Pancreatitis

2

2

  Intra-abdominal infection

1

3