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一、常规呼吸和高频呼吸常规呼吸机模拟人肺自然呼吸,参数设定和正常呼吸大致相仿。而高频呼吸机的工作频率10倍于常规呼吸机,潮气量小于生理死腔。这二点和传统观念是背道而驰的。通气过程分宏观、微观两个过程:呼吸运动推动气道内气体作集团移动的宏观过程和分子籍布朗运动穿过肺泡称的散过程。传统观念认为前者是人工呼吸机用武之地,而后者必需由膜肺、人工心肺机等来完成。因而对小于生理死腔的潮气量
First, the conventional breathing and high-frequency breathing Conventional breathing machine to simulate natural lung breathing, parameter setting and normal breathing roughly the same. The high-frequency ventilator operating frequency of 10 times the conventional ventilator, tidal volume less than physiological dead space. These two points run counter to traditional concepts. Ventilation process is divided into macro and micro two processes: the respiratory movement to promote airway gases for the group to move the macroscopic process and the molecular motion of Brownian lungs through the alveolar said the process. The traditional view that the former is the use of artificial respirators, and the latter must be membrane lungs, artificial heart-lung machine to complete. Thus less than the physiological dead space tidal volume