3. Foti, et al15 compared changes in oxygenation and end-expiratory lung volumes at increasing PEEP levels with superimposed volume controlled ventilation versus a sustained inflation maneuver in 15 adults with ARDS. Although recruitment was variable (due to the use of VCV, hence variable plateau pressures), he found that maximal increase in oxygenation occurred at high sustained levels of PEEP (mean 16 cm H2O for 30 minutes) when compared with 30 second recruitment maneuvers and low PEEP (mean of 9 cm H2O). The PEEP/plateau protocol was not associated with any hemodynamic alterations, as with the sustained inflation maneuver.