Patient airflow (A) and simulated curve (B). Case of a 74 years old female. (BMI =66.5 kg.m −1) with an OHS and a sleep apnea syndrome,0 ventilated with a VPAP III ventilator (ResMed) in a pressure support mode. Pressure values: P
=23 cmH 2O and P
=9 cmH 2O. These values were also used with the mechanical lung. We set P0.1=3 cmH 2O. R and C values were those used for the first case shown in Figure 10.