高频通气(HFV)是1927年由Heijman首先用于临床麻醉,近年来国内外将HFV用于呼吸支持,在Ⅰ型呼吸衰竭的救治中取得了明显疗效,可以迅速提高动脉氧分压(PaO_2),而不造成CO_2潴留,对慢阻肺所致Ⅱ型呼吸衰竭,国内外报道较少且意见尚不统一,为此我们对45例COPDⅡ型呼吸衰竭患者进行了HFJV治疗的观察,报告如下. High Frequency Ventilation (HFV) was first used by Heijman for clinical anesthesia in 1927. In recent years, HFV has been used in respiratory support both at home and abroad. Obvious curative effect has been achieved in the treatment of type Ⅰ respiratory failure, which can rapidly increase the arterial partial pressure of oxygen (PaO_2 ), Without causing CO_2 retention, type Ⅱ respiratory failure caused by chronic obstructive pulmonary disease, few reports at home and abroad and the opinion is not uniform, so we observed 45 cases of COPD type Ⅱ respiratory failure patients HFJV treatment, the report is as follows .