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Tidal pressure–volume loops (i.e.

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1 Tidal pressure–volume loops (i.e.
Tidal pressure–volume loops (i.e. Campbell diagrams) during rest and exercise in a patient with very severe chronic obstructive pulmonary disease. Note the increased elastic (░) and inspiratory threshold loads (ITL; ▒) resulting from dynamic hyperinflation (change in inspiratory capacity (ΔIC)). Total lung capacity (TLC) occurred at 9.25 L. CL,dyn: dynamic lung compliance; Cw: chest wall compliance; Poes: oesophageal pressure. D. E. O'Donnell, and P. Laveneziana Eur Respir Rev 2006;15:61-67 ©2006 by European Respiratory Society

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