Fig. 1.
Column chart showing the mechanical power applied to the respiratory system (top) and to the lung (bottom) at set positive end-expiratory pressure (PEEP) values of 0, 4, 7, 11, 14, and 18 cm H2O. Note that power is scaled differently for respiratory system (0 to 45 J/min) and the lung (0 to 25 J/min). ***P <0.001, driving pressure related power PEEP 0 vs. PEEP 4. §§P <0.05, driving pressure related lung power PEEP 0 versus PEEP 7.