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Fig. 1 | Respiratory Research

Fig. 1

From: Expiratory high-frequency percussive ventilation: a novel concept for improving gas exchange

Fig. 1

Scheme of the experimental setup. A custom-made blower-driven ventilator was used to deliver the driving pressure during conventional pressure-controlled ventilation, and it also allowed superposition of the high-frequency signals over the conventional pressure excursions. The rotation speed of the blower was controlled by a custom-made software to deliver the changes in the airway pressure required for the different mechanical ventilation modalities. Volumetric capnograms were recorded by using a mainstream CO2 sensor in series with a screen pneumotachograph (PTG)

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