506382.fig.001a
(a)
506382.fig.001b
(b)
Figure 1: Diagram of the experimental setups. (a) Setup used for a flow rate of 40 L/min. (1) Venturi mask. (2) Pneumotachograph. (3) Oxymeter. (4) Heater/humidifier. (5) Air entrainer with the Venturi effect. (6) Wall mounted oxygen supply. (b) Setup used for delivering an airflow of 60 L/min. (1) High-flow nasal cannula. (2) Pneumotachograph. (3) Oxymeter. (4) Heater/humidifier. (5) Continuous high-flow generator with the Venturi effect.