Table 6 Characteristics of weaning and duration of mechanical ventilation, ICU and hospital stay in patients with ARDS

Tracheostomy

0.16

 Tracheostomy after ARDS onset/nontracheostomized patients until ARDS onset

33/76 (43.4)

20/102 (19.6)

0.001

 Tracheostomy, percutaneous /surgical/not specified

29 (87.9)/3 (9.1)/1 (3.0)

11 (55.0)/8 (40.0)/1 (5.0)

0.01

 Days to tracheostomy after ARDS onset

10 (4–13)

4 (2–11)

0.10

Main weaning method

0.16

 Daily spontaneous weaning trial

12 (19.7)

25 (34.7)

 Gradual reduction of ventilatory support

45 (73.8)

43 (59.7)

 Not specified

4 (6.6)

4 (5.6)

 Extubation

42/86 (48.8)

63/107 (58.9)

0.16

 Reintubation within 48 h

17/42 (40.5)

16/53 (25.4)

0.10

 Non-invasive ventilation after extubation; reintubation thereafter

23/42 (54.8); 10 (43.5)

27/63 (42.9); 12 (44.4)

0.23; 0.95

Duration of mechanical ventilation (days)

16 (9–29)

8 (3–16)

<0.001

 After ARDS onset

13 (6–23)

6 (3–14)

<0.001

 Survivors

14 (9–25)

7 (3–14)

<0.001

Length of ICU stay (days)

19 (12–34)

10 (5–23)

<0.001

 After initiation of mechanical ventilation

19 (11–34)

10 (5–24)

<0.001

 After ARDS onset

15 (9–31)

8 (4–18)

<0.001

 Survivors

19 (13–35)

13 (5–24)

0.003

Length of hospital stay (days)

31 (17–46)

21 (9–41)

0.007

 After initiation of mechanical ventilation

26 (14–42)

15 (6–34)

0.002

 After ARDS onset

23 (11–37)

14 (4–28)

0.005

 Survivors

32 (19–53)

24 (14–41)

0.077