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Table 3 Lung stress, strain and specific lung elastance

From: Respiratory mechanics and lung stress/strain in children with acute respiratory distress syndrome

  PEEP (cmH2O) p value
4    12    Pathology PEEP V T
VT
8 10 12 8 10 12
Lung stress (cmH2O) <0.001 <0.001 <0.001
 ARDS patients 16.0 ± 4.0 17.7 ± 3.8 19.9 ± 3.7 22.9 ± 2.8 24.6 ± 3.0 27.2 ± 2.8    
 Control patients 9.9 ± 3.1 10.9 ± 3.0 12.2 ± 3.2 15.3 ± 4.4 16.8 ± 4.6 18.4 ± 5.5    
Lung strain 0.013 <0.001 0.030
 ARDS patients 1.13 ± 0.39 1.32 ± 0.43 1.53 ± 0.46 1.94 ± 0.60 2.19 ± 0.70 2.39 ± 0.86    
 Control patients 0.94 ± 0.30 1.08 ± 0.36 1.23 ± 0.45 1.80 ± 0.56 1.97 ± 0.67 2.13 ± 0.74    
Specific lung elastance (cmH2O) <0.001 0.024 0.586
 ARDS patients 16.22 ± 7.8 14.21 ± 6.2 13.81 ± 4.8 13.23 ± 4.9 12.41 ± 4.7 12.36 ± 4.9    
 Control patients 11.24 ± 3.3 10.62 ± 2.3 10.46 ± 2.4 8.98 ± 2.2 9.04 ± 1.8 9.21 ± 1.8    
  1. ARDS acute respiratory distress syndrome
  2. Values are mean ± SD. Two statistical analyses are reported: a three-way analysis of variance to test the effects of the presence of the disease, the level of PEEP and the level of VT/IBW and a post hoc Bonferroni’s test analysis for the comparison between subgroups