Table 2 Underlying conditions and mechanism for patients with acute lung injury/acute respiratory distress syndrome

Sepsis (n)

128

   Respiratory

83

   Abdomen

26

   Urinary tract

5

   Soft tissue

3

   Others

11

Non-infectious condition (n)

79

   Trauma

11

   Surgery

8

   Burn

7

   Respiratory diseases

10

   Gastrointestinal diseases

5

   Central nervous system

4

   Severe acute pancreatitis

3

   Vascular diseases

2

   Others

29

Direct or indirect lung injury

   Direct injury

125

   Indirect injury

82