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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: Respir Med. 2017 Aug 1;131:18–26. doi: 10.1016/j.rmed.2017.07.063

Figure 1.

Figure 1

Modified pulmonary graphics of the transpulmonary pressure volume (A) and flow volume (B) relationships from the patient with Barnes syndrome. The right limb of the transpulmonary pressure-volume curve represents inspiration, and the left limb of the transpulmonary pressure-volume curve represents deflation. The C20/C total ratio represents the ratio of the slope of the last 20% of the inflation curve divided by C total as represented by the straight solid line in the middle of the transpulmonary pressure volume curve. C, compliance.