Figure 1From: Unloading work of breathing during high-frequency oscillatory ventilation: a bench studyScheme of the 3100B high-frequency oscillatory ventilator (HFOV) and the demand-flow system (DFS) connection. (a) The basic principle of the 3100B high-frequency oscillator. (b) Schematic drawing of the connection of the DFS to the 3100B oscillator. Pprox, proximal airway pressure.Back to article page