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本文着重介绍高频通气的气体交换机制及其通气效应的影响因素等方面的问题。一、高频通气期间肺内气体的运输与交换传统的呼吸生理观点认为:每次呼吸周期中,吸入潮气量应当大于解剖死腔量,从而使吸入的新鲜气流能到达具有气体交换功能的肺区,才能维持足够的肺泡通气。高频通气以其较小的潮气量能成功地维持机体正常通气的事实表明,用传统的呼吸生理机制难
This article focuses on the gas exchange mechanism of HF aeration and the influencing factors of aeration effects. First, the transport and exchange of intrapulmonary gas during high-frequency ventilation Traditional respiratory physiology point of view: each breath cycle, the tidal volume should be inhaled more than anatomic dead space, so that the inhalation of fresh air can reach the lungs with gas exchange function District, in order to maintain adequate alveolar ventilation. High-frequency ventilation with its smaller tidal volume can successfully maintain the normal ventilation of the body shows that the traditional respiratory physiology is difficult