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Regional area distribution |
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| Upper |
Middle |
Lower |
|
|
|
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| Mean ± SD |
Mean ± SD |
Mean ± SD |
|
|
|
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| VC |
40.4% ± 6.9% |
36.0% ± 3.5% |
23.6% ± 9.5% |
| PC |
39.7% ± 6.3% |
34.6% ± 3.3% |
25.7% ± 8.9% |
| PS |
39.5% ± 5.8% |
34.6% ± 3.2% |
25.8% ± 8.4% |
| t test |
Upper ↓ |
Mid ↓ |
Lower ↑ |
| VC-PC |
0.170 |
0.00001a |
0.002a |
| VC-PS |
0.042a |
0.0008a |
0.004a |
| PC-PS |
0.367 |
0.8598 |
0.536 |
|
ap < 0.05 indicates a significant difference in area distribution among VC and PS modes in all three regions. VC to PC mean regional area differs in the mid and lower lung regions. Tables 3 and 4 and their corresponding descriptions should be interpreted side by side. PC, assist pressure control; PS, pressure support; SD, standard deviation; VC, assist volume control; ↑ = increase; ↓ = decrease. | |||
Dellinger et al. Critical Care 2007 11:R26 doi:10.1186/cc5706 |
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