慢性阻塞性肺疾病(COPD)并发慢性通气功能呼吸衰竭,是临床常见的危及生命的并发症,有创机械通气疗效肯定,但因其有创且并发症多,患者及其家属不易接受。而经鼻面罩无创性机械通气方法在临床的应用,为纠正由COPD并发的通气功能呼吸衰竭提供了一种新的治疗方法。双水平气道正压无 Chronic obstructive pulmonary disease (COPD) complicated with chronic ventilatory failure is a common clinical life-threatening complication. The positive effect of invasive mechanical ventilation is definite. However, its invasiveness and complications are unacceptable to patients and their families. The nasal mask noninvasive mechanical ventilation in clinical applications, to correct ventilatory dysfunction caused by COPD respiratory failure provides a new treatment. Bi-level positive airway pressure without