Figure 1.

Dynamic pressure-flow plot. The effect of open lung ventilation (OLC) on flow and pressure drop through the pulmonary circulation is displayed compared with conventional mechanical ventilation (CMV). On the vertical axis, change of pressure drop through the pulmonary circulation is displayed: mean pulmonary artery pressure (PAmean)–pulmonary capillary wedge pressure during OLC – PAmean–pulmonary capillary wedge pressure during CMV. On the horizontal axis, the change of cardiac output (CO) is displayed.