Figure 2From: Sizing the lung of mechanically ventilated patientsRelationship between relaxation volume, lung volume at relaxed end-expiration (Vrel), and inspiratory capacity (IC). Open symbols identify measurements of patients 1 to 4, in whom Vrel was measured at zero end-expiratory pressure. The remaining Vrel measurements were made at a positive end-expiratory pressure of 5 cm H2O.Back to article page