Ngeow Y K, Mitzner W
J Appl Physiol Respir Environ Exerc Physiol. 1982 Dec;53(6):1638-42. doi: 10.1152/jappl.1982.53.6.1638.
We describe simple high-frequency oscillation systems that incorporate a CO2 absorber and supply O2 on a need basis. These systems have the advantage of easy control of mean airway pressure and airway hydration and negligible loss of oscillatory tidal volume. Experiments done at constant tidal volume showed that as frequency (and hence total ventilation) increased, arterial CO2 tension (PaCO2) decreased. The fall in PaCO2 occurred until frequency reached approximately 20 Hz; above 20 Hz further increases in frequency had little or no effect on PaCO2. Because of their practical advantages the techniques described here may be quite useful in a clinical setting where an oscillator, rather than jet-type high-frequency, ventilation system is desired.
我们描述了一种简单的高频振荡系统，该系统包含一个二氧化碳吸收器，并按需供应氧气。这些系统具有易于控制平均气道压力和气道水化作用以及振荡潮气量损失可忽略不计的优点。在恒定潮气量下进行的实验表明，随着频率（以及总通气量）增加，动脉血二氧化碳分压（PaCO2）降低。PaCO2一直下降，直到频率达到约20Hz；高于20Hz时，频率进一步增加对PaCO2几乎没有影响。由于其实际优势，这里描述的技术在需要使用振荡器而非喷射式高频通气系统的临床环境中可能非常有用。
