Table 1 Characteristics of critically ill patients evaluated for inspiratory muscle strength that enrolled in the study (N = 74) and of the above critically ill patients that MRC muscle strength score could be estimated (N = 33)

Age, years

59 ± 20

55 ± 20

Gender, Male/Female

52/22

29/4

COPD

10

5

Chronic heart failure

4

3

Diabetes mellitus

11

4

Medical/Surgical/Trauma

26/27/21

8/14/11

Main diagnosis

   Pneumonia

6

1

   Sepsis

5

2

   COPD

1

1

   Trauma/Burn

21

10

   Cerebral hemorrhage/surgery

14

4

   Cardiothoracic/Vascular surgery

4

2

   Abdominal surgery

10

7

   Drug intoxication

1

1

   Other

12

5

ICU Stay, days

33 ± 17

32 ± 18

APACHE II score

16 ± 5

15 ± 5

SOFA score

8 ± 3

7 ± 3

SAPS III score

57 ± 14

55 ± 12

ICU-AW/no ICU-AW

17/16

MRC muscle strength score, (n = 33)

41 ± 16

MIP, cmH₂O

37 ± 18

38 ± 17

Length of MV until onset of weaning, days, (n = 66/31)

16 ± 13

13 ± 12

Weaning period, days, (n = 60/30)

6 ± 10

7 ± 11