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Table 3 Computer tomography-derived variables

From: Effects of regional perfusion block in healthy and injured lungs

 

Lung

1

2

3

4

5

p value

ANOVA

Lung weight (g)

L

266 ± 15*

287 ± 6*

415 ± 119

484 ± 204

498 ± 53*

0.075

R

367 ± 38

413 ± 27

508 ± 119

581 ± 103

777 ± 62$

< 0.001

Normally aerated (%)

L

61 ± 13

40 ± 2

32 ± 26

24 ± 14

30 ± 6

0.06

R

60 ± 11

41 ± 10

39 ± 25

35 ± 13

15 ± 7$

0.021

Poorly aerated (%)

L

31 ± 14

46 ± 3

34 ± 12

38 ± 11

34 ± 7

0.441

R

29 ± 13

31 ± 3

31 ± 10

35 ± 9

29 ± 13

0.877

Non-aerated (%)

L

8 ± 3

14 ± 1

33 ± 25

36 ± 13

35 ± 13

0.07

R

10 ± 1

28 ± 13

29 ± 24

28 ± 13

55 ± 18$

0.034

Overinflated (%)

L

1.2 ± 1.5

0.1 ± 0.2

1.0 ± 1.6

0.5 ± 0.7

0.4 ± 0.5

0.68

R

1.7 ± 2.4

0.1 ± 0.1

1.2 ± 1.8

0.8 ± 0.8

0.3 ± 0.3

0.568

Gas/tissue ratio

L

2.0 ± 0.9

1.1 ± 0.1

1.2 ± 1.1

0.8 ± 0.5

1.0 ± 0.3

0.281

R

2.1 ± 1.1

1.1 ± 0.3

1.4 ± 1.1

1.2 ± 0.5

0.5 ± 0.3

0.131

Recruitability (%)

L

0.4 ± 6

4.4 ± 1.3

6 ± 14

8 ± 7

19 ± 13

0.232

R

3 ± 5

7 ± 5

9 ± 16

8 ± 3

28 ± 23

0.129

  1. Data are reported as mean ± standard deviation
  2. Group 1 control; group 2 the right lower lobe perfusion block with protective ventilation; group 3 lung lavage, high V T ventilation; group 4 as group 3 plus the right lower lobe perfusion block; group 5 as group 3 plus the left lower lobe perfusion block; R and L refer to the right and left lungs, respectively
  3. * p < 0.05 for comparison between left and right lungs within the same group
  4. $ p < 0.05 in ANOVA