Black A M, Seegobin R D
Anaesthesia. 1981 May;36(5):498-511. doi: 10.1111/j.1365-2044.1981.tb10286.x.
The general relationships between the pressure inside an endotracheal tube cuff, the pressure exerted by that cuff on the tracheal wall and the airway pressure have been re-examined in a model system. In relatively recent literature, the tracheal wall pressure at a given cuff volume has been calculated as the difference between intracuff pressures at that volume when the cuff is inflated inside the trachea and when it is inflated whilst suspended freely in air. This has been used as a general relationship, as an alternative to direct measurement in real and model tracheas. In this study, the directly measured pressure was not generally equal to the pressure as calculated above.
在一个模型系统中，对气管内导管套囊内部压力、该套囊对气管壁施加的压力以及气道压力之间的一般关系进行了重新研究。在相对近期的文献中，给定套囊容积下的气管壁压力被计算为套囊在气管内充气时和在空气中自由悬挂充气时该容积下的套内压力之差。这已被用作一种一般关系，作为在真实和模型气管中进行直接测量的替代方法。在本研究中，直接测量的压力通常不等于上述计算得出的压力。
