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Table 3 Computed tomography data in patients with and without intrinsic PEEP

From: Dynamic hyperinflation and intrinsic positive end-expiratory pressure in ARDS patients

 Patients with intrinsic PEEP (n = 87)Patients without intrinsic PEEP (n = 130)PPEEPiPPEEPPPEEPix PEEP
Total weight (g)0.72N.A.N.A.
 5 cmH2O1366 [1151–1666]1411 [1172–1674]   
Total gas volume (mL)0.79N.A.N.A.
 5 cmH2O961 [701–1535]973 [659–1433]   
Non-inflated tissue (%)0.242< 0.0010.301
 5 cmH2O39 [26–53]43 [33–55]   
 45 cmH2O25 [18–35]27 [15–38]
Poorly inflated tissue (%)0.815< 0.0010.490
 5 cmH2O30 [23–39]28 [21–40]   
 45 cmH2O21 [18–33]25 [19–35]
Well-inflated tissue (%)0.203< 0.0010.888
 5 cmH2O26 [15–40]25 [14–34]   
 45 cmH2O43 [37–56]43 [34–55]
Over-inflated tissue (%)0.814< 0.0010.149
 5 cmH2O0.01 [0–0.13]0.01 [0–0.11]   
 45 cmH2O0.7 [0.21–4.17]1.49 [0.36–4.60]
  1. Data are expressed as median [I.Q. range] as appropriate
  2. Two-way repeated measures analysis of variance (ANOVA) followed by all pairwise multiple comparison procedures (Holm-Sidak method) was used for analysis
  3. p < 0.05 raising airway pressure from 5 to 45 cmH2O
  4. There are no significant interactions
  5. n sample size, PEEP positive end-expiratory pressure
  6. Italics: for all the statistical data
  7. Bold italics: for statistical significant data