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Table 4 Electrical impedance tomography indexes in automatic tube compensation and low-pressure support periods during spontaneous breathing trial in 17 patients

From: Low-pressure support vs automatic tube compensation during spontaneous breathing trial for weaning

 

ATC

Low PS

P value

Anterior-to-posterior impedance ratio

0.69 (0.58–1.59)

0.86 (0.49–1.61)

0.55

Center of ventilation

54.8 (46.3–58.1)

53.7 (46.0–60.2)

0.82

Global inhomogeneity index

0.62 (0.47–0.80)

0.65 (0.50–0.75)

0.35

Coefficient of variation

0.95 (0.81–1.82)

0.96 (0.77–1.39)

0.68

  1. Values are median (1st–3rd quartiles)
  2. ATC automatic tube compensation, PS pressure support