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Figure 4 | Critical Care

Figure 4

From: Pressure-dependent stress relaxation in acute respiratory distress syndrome and healthy lungs: an investigation based on a viscoelastic model

Figure 4

Results of parameter estimation. Estimated parameters of viscoelasticity for the acute respiratory distress syndrome (ARDS) group and the control group in terms of lower quartiles, medians and upper quartiles plotted against plateau pressure (Pplat). Values on the right side of the diagrams indicate the overall medians. Statistically significant levels are indicated by * P ≤ 0.05, † P ≤ 0.01 and ‡ P ≤ 0.001. (a) Resistance of viscoelastic model component (Rve) as well as (b) compliance of viscoelastic model component (Cve) differ significantly between both groups. For both parameters, a notably non-linear progression with increasing pressure was observed. (c) Time constant of viscoelastic model component (τve) does not differ between the two patient groups, and it does not depend on Pplat.

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Critical Care

ISSN: 1364-8535