Table 2 Description of included nonrandomised studies

Forster and colleagues [25]

Prospective case series

2013

10

VV (with CRRT)

60

7/3

Respiratory and haemodynamic parameters, complications, mortality

40

3

Nierhaus and colleagues [29]

Retrospective case series

2011

13

AV

52

8/5

Respiratory parameters, ICU LOS, complications, mortality

54

3

Weber-Carstens and colleagues [26]

Retrospective case series

2009

10

AV

54

6/4

Respiratory parameters, sedation scores, ICU LOS, mortality

60

3

Zimmermann and colleagues [20]

Prospective case series

2009

51

AV

52

43/8

Respiratory parameters, haemodynamics, complications, mortality

49

3

Terragni and colleagues [21]

Prospective cross-sectional study

2009

32

VV

66

22/10

Respiratory parameters, lung morphology, inflammatory response, complications

NR

2+

Muellenbach and colleagues [27]

Retrospective case series

2008

22

AV

38

20/2

Respiratory parameters, haemodynamics, complications, ventilator-free days, ICU LOS, mortality

27

3

Bein and colleagues [28]

Retrospective case series

2006

90

AV

44

69/21

Respiratory parameters, haemodynamics, complications, mortality

59

3

Liebold and colleagues [30]

Retrospective case series

2002

70

AV

41

55/15

Respiratory parameters, complications, mortality

64

3

Guinard and colleagues [22]

Prospective cross-sectional study

1997

10

VV

NR

NR

Respiratory parameters, complications, mortality

75

2+

Brunet and colleagues [23]

Prospective case series

1994

11

VV

27

4/7

Respiratory parameters, mortality

27

3

Bindslev and colleagues [31]

Retrospective case series

1991

14

VV

31

11/3

Respiratory parameters, complications, mortality

57

3

Gattinoni and colleagues [24]

Prospective case series

1986

43

VV

26

18/25

Respiratory parameters, haemodynamics, complications, mortality

51

3

Total

376

263/103(+10 NR)