Ray C, Miodownik S, Carlon G, Groeger J, Howland W S
Crit Care Med. 1984 Sep;12(9):711-2. doi: 10.1097/00003246-198409000-00004.
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.
一种气电回路模拟用于描述高频喷射通气在存在大气道中断时维持通气和氧合的两种不同机制。频率依赖性机制基于与电容性电抗等效的气动变化。压力依赖性机制在压控电阻器上模拟肺部缺陷。该电路模型还用于解释高频喷射通气期间导致气体潴留和意外呼气末正压的因素。
