Pneumatic-to-electrical analog for high-frequency jet ventilation of disrupted airways.
A pneumatic-to-electrical circuit analog is used to describe 2 separate mechanisms by which high-frequency jet ventilators sustain ventilation and oxygenation in the presence of large airway disruptions. The frequency-dependent mechanism is based on variations in the pneumatic equivalent to capacitive reactance. The pressure-dependent mechanism models lung defects on a voltage-controlled resistor. The electrical circuit model is also used to explain the factors leading to gas trapping and inadvertent positive end-expiratory pressure during high-frequency jet ventilation.
D000403:Airway Resistance; D001983:Bronchial Fistula / Q000503:physiopathology; D005402:Fistula / Q000503:physiopathology; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008170:Lung Compliance; D008954:Models, Biological; D010995:Pleural Diseases / Q000503:physiopathology; D011175:Positive-Pressure Respiration; D012121:Respiration, Artificial / Q000379:methods*