Pneumatic‐to‐electrical analog for high‐frequency jet ventilation of disrupted airways
作者:
COLE,
RAY SAUL,
MIODOWNIK GRAZIANO,
CARLON JEFFREY,
GROEGER WILLIAM,
期刊:
Critical Care Medicine
(OVID Available online 1984)
卷期:
Volume 12,
issue 9
页码: 711-712
ISSN:0090-3493
年代: 1984
出版商: OVID
数据来源: OVID
摘要:
A pneumatic-to-electrical circuit anàlog 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.
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