Damping of the dynamic pressure amplitude in the ventilatory circuit during high-frequency oscillatory ventilation

Authors: Martin Rožánek, Zuzana Horáková, Ondřej Čadek, Martin Kučera, Karel Roubík

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Published in Biomedical Engineering / Biomedizinische Technik

Abstract

The study deals with experimental measuring of attenuation of dynamic pressure during high-frequency oscillatory ven-tilation. The experimental circuit consists of high-frequency oscillatory ventilator Sensormedics 3100 B, patient circuit and lung model 5600i. Different values of the flow resistance and alveolar compliance were modelled during the ex-perimental measurement. The ventilatory parameters of the oscillatory ventilator were constant during whole measure-ment. We confirm a decrease of the amplitude of the pressure swings in the alveolar space during high-frequency oscilla-tory ventilation. Dependence on the mechanical properties of the respiratory system was found.

References

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