Table 4 Inspiratory muscle effort during the five different weaning tests and 20 minutes after extubation

7.2 ± 5.0*

13.4 ± 5.5*

12.3 ± 6.3*

19.1 ± 7.7

19.8 ± 7

19.1 ± 5.4

8.4 ± 5.5*

15.4 ± 5.7*

14.2 ± 6.4*

21.2 ± 8.1

21.7 ± 7.0

20.9 ± 5.5

141 ± 54*

259 ± 84*

231 ± 82*

346 ± 97

332.9 ± 85.9

365 ± 87

157 ± 80*

318 ± 113*

302 ± 111*

451 ± 151

439 ± 152

465 ± 117

0.69 ± 0.31*

1.15 ± 0.39*

1.09 ± 0.49*

1.58 ± 0.57

1.57 ± 0.56

1.56 ± 0.5

7.15 ± 3.5*

12.2 ± 6.8*

12.4 ± 7.1*

17.7 ± 10.2

16.8 ± 8.0

17.8 ± 9.1