Table 3 Physiologic variables at the three different time points selected for the analysis of electrical impedance tomography data

Tidal image region-global (%)

82.90 ± 5.40

84.60 ± 7.31

92.50 ± 6.52^{a, b}

Ventral of tidal image region (%)

50.20 ± 10.44

46.60 ± 8.61

43.50 ± 7.03

Dorsal of tidal image region (%)

32.70 ± 12.14

38.00 ± 9.24^a

49.00 ± 7.32^{a, b}

ROI 1 of ventilation distribution (%)

20.8 ± 9.7

15.8 ± 7.0

11.2 ± 4.5

ROI 2 of ventilation distribution (%)

39.00 [36.50–43.00]

37.00 [35.25–41.25]

37.00 [31.00–42.00]

ROI 3 of ventilation distribution (%)

31.50 ± 11.20

36.30 ± 7.85

37.90 ± 8.06

ROI 4 of ventilation distribution (%)

7.50 ± 3.24

8.50 ± 3.10

15.00 ± 3.74^{a, b}

GI index-ventilation (%)

0.53 ± 0.06

0.52 ± 0.07

0.47 ± 0.05^a

Blood flow region-global (%)

73.9 ± 9.9

74.4 ± 12.2

75.3 ± 7.2

Ventral of blood flow region (%)

37.70 ± 10.02

36.30 ± 8.52

29.30 ± 10.59

Dorsal of blood flow region (%)

36.42 ± 6.20

38.20 ± 7.98

46.00 ± 9.29^a

ROI 1 of perfusion distribution (%)

12.10 ± 4.66

10.40 ± 9.28

9.60 ± 10.89

ROI 2 of perfusion distribution (%)

38.20 ± 9.35

37.90 ± 5.59

28.80 ± 4.96^{a, b}

ROI 3 of perfusion distribution (%)

40.20 ± 7.00

38.70 ± 7.13

42.30 ± 7.15

ROI 4 of perfusion distribution (%)

9.50 ± 6.49

13.00 ± 8.65

19.30 ± 8.03

GI index-perfusion (%)

0.60 ± 0.12

0.59 ± 0.08

0.59 ± 0.10

Matched region (%)

52.50 ± 6.65

61.10 ± 7.39^a

67.40 ± 7.09^{a, b}

Dead space-EIT (%)

18.00 ± 4.69

18.10 ± 5.02

14.30 ± 5.89

Shunt-EIT (%)

29.50 ± 7.56

20.80 ± 6.71^a

18.30 ± 6.06^a