慢性阻塞性肺疾病(COPD)可由一定的诱发因素出现急性呼吸衰竭或慢性呼吸衰竭加重。传统的有创机械通气治疗因需气管插管及费用原因,使众多病人及家属难以接受,从而延误治疗时机。近年来,在COPD研究中有关呼吸肌疲劳等问题的提出,使Ⅱ型呼吸衰竭无创性通气日益受到重视[1]。我院 Chronic obstructive pulmonary disease (COPD) may be due to certain triggers of acute respiratory failure or worsening of chronic respiratory failure. Traditional invasive mechanical ventilation due to tracheal intubation and cost reasons, so many patients and their families unacceptable, thus delaying the timing of treatment. In recent years, the COPD study on respiratory muscle fatigue and other issues raised, so that non-invasive ventilation of respiratory failure Ⅱ more and more attention [1]. Our hospital