本文观察 HFV 用于慢阻肺或合并肺性脑病者12例,能够:(1)迅速大幅度提高PaO_2,较快改善病情,优于低流量吸氧,且不加重 CO_2潴留,也不降低动脉血 pH.(2)不增加胸内压,对呼衰合并心衰者更适用,优于常规机械通气。(3)可不中断 HFV 而从另一侧鼻孔吸痰,避免发生低血氧症.(4)对患者的 R、P、Bp 等均无影响. In this paper, 12 cases of chronic obstructive pulmonary disease or pulmonary encephalopathy were observed in this study. They were able to: (1) rapidly and significantly improve PaO 2, improve the disease faster than low-flow oxygen inhalation without increasing CO 2 retention, Blood pH. (2) do not increase intrathoracic pressure, respiratory failure associated with heart failure is more applicable, superior to conventional mechanical ventilation. (3) without interruption of HFV suction from the other side of the nose, to avoid hypoxemia (4) the patient’s R, P, Bp and so had no effect.