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本文观察了高频喷射通气(HFJV)治疗慢性阻塞性肺疾病(COPD)Ⅱ型呼吸衰竭,频率和驱动压改变对通气效果的影响。结果:不同频率或驱动压治疗后均能使氧分压(PaO_2)明显上升,频率或驱动压过高易造成二氧化碳潴留加重。结论:HFJV治疗COPDⅡ型呼吸衰竭时,频率应低于120次/分,驱动压应小于0.1kPa/cm~2,这样既能保证动脉血充分氧合又能防止二氧化碳潴留加重。
This article investigates the effects of high frequency jet ventilation (HFJV) on ventilatory response to chronic obstructive pulmonary disease (COPD) type Ⅱ respiratory failure with changes in frequency and driving pressure. Results: After treatment at different frequencies or driving pressure, the partial pressure of oxygen (PaO_2) increased obviously, and the increase of frequency or driving pressure could lead to the increase of carbon dioxide retention. Conclusion: The frequency of HFJV in treating respiratory failure of COPD type Ⅱ should be less than 120 beats per minute and the driving pressure should be less than 0.1 kPa / cm 2, so as to ensure adequate arterial blood oxygenation and prevent carbon dioxide retention.