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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