Fig. 4.
Pearson correlations of transpulmonary driving pressure (ΔP,L) and respiratory system plateau pressure (Pplat,rs) with interleukin (IL)-6 and amphiregulin expressions and alveolar collapse and hyperinflation at fixed tidal volume (VT) = 6 ml/kg. The r value represents the correlation coefficient, and P, the respective P value. Statistical significance was accepted at P < 0.05. NV = nonventilated group.