Young J D, Sykes M K
Nuffield Department of Anaesthetics, Radcliffe Infirmary, Oxford.
Br J Anaesth. 1988 Nov;61(5):601-5. doi: 10.1093/bja/61.5.601.
A new method has been developed to measure tidal volume during high frequency jet ventilation. A pneumotachograph is placed in the expiratory limb of the breathing circuit. Using a model lung, the results from this method did not differ from the tidal volume calculated from pressure changes measured within the model lung. The results from the two methods correlated well (r = 0.99). The method enables the gas volumes entrained and spilled out of the airway during inspiration, true I:E ratios and mean driving pressures to be determined. The method is non-invasive and could easily be applied clinically.
已开发出一种新方法来测量高频喷射通气期间的潮气量。在呼吸回路的呼气支中放置一个呼吸速度描记器。使用模型肺，该方法的结果与根据模型肺内测量的压力变化计算出的潮气量没有差异。两种方法的结果相关性良好（r = 0.99）。该方法能够确定吸气期间气道内夹带和溢出的气体量、真实的吸呼比和平均驱动压力。该方法是非侵入性的，并且可以很容易地应用于临床。
