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Intensive Care Medicine Experimental
Fig. 2 | Intensive Care Medicine Experimental

Fig. 2

From: Transpulmonary and pleural pressure in a respiratory system model with an elastic recoiling lung and an expanding chest wall

Fig. 2

Left panels: shows airway pressure/volume (P/V) curve in an isolated lung (no CW), with nominal compliance of 38 ml/cmH2O (two test lungs), where the airway pressure equals the transpulmonary pressure. Mid panels: tidal airway (total respiratory system) P/V curves at 0, 4, 8, and 12 cmH2O of end-expiratory airway pressure (PEEP; filled circles). Upper mid panel: normal chest wall. Lower mid panel: stiff chest wall. Right panels: tidal airway (respiratory system) P/V curves with superimposed isolated lung P/V curve (dashed line) from end-expiration at ZEEP to end-inspiration at PEEP 12 cmH2O. Upper right panel: normal chest wall. Lower right panel: stiff chest wall. Note that irrespective of whether the chest wall is normal or stiff, the isolated lung P/V curve is aligned along the tidal end-expiratory airway P/V points

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