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Annals of Intensive Care

Table 3 EIT data in patients with SBT success and failure

From: Electrical impedance tomography during spontaneous breathing trials and after extubation in critically ill patients at high risk for extubation failure: a multicenter observational study

 

SBT success (n = 61)

SBT failure (n = 17)

Success vs. failure

Baseline

SBT_0

SBT_30

Baseline

SBT_0

SBT_30

∆Vt%

0 [0; 0]

− 16.4 [− 37.0; − 2.5]

− 12.9 [− 35.0; 5.0]

0 [0; 0]

− 27.6 [− 51.0; − 16.0]

− 22.9 [− 50.6; − 13.3]

p > 0.999 a

p = 0.079 b

p = 0.054 c

∆EELI (ml)

0 [0; 0]

− 117 [− 240; 21]

− 103 [− 292; 62]

0 [0; 0]

− 456 [− 934; − 162]

− 333 [− 1375; − 157]

p > 0.999 a

p < 0.001 b

p = 0.001 c

Inhomogeneity index

51 [44; 61]

56 [48; 71]

57 [46; 70]

65 [54; 87]

89 [61; 105]

90 [62; 101]

p = 0.002 a

p = 0.003 b

p = 0.005 c

  1. SBT: Spontaneous Breathing Trial; SBT_0: first 5 min after the beginning of the SBT; SBT_30: last 5 min of the SBT; ∆Vt%: change from baseline of the tidal volume in percentage; ∆EELI: change from baseline of the end-expiratory lung impedance
  2. aComparison between groups within baseline
  3. bComparison between groups within SBT_0
  4. cComparison between groups within SBT_30. According to Bonferroni correction, the threshold for statistical significance is p < 0.017
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