慢性阻塞性肺疾病(COPD)患者常合并Ⅱ型呼吸衰竭,临床常规以吸氧、抗感染、通畅气道等治疗难以获得满意的疗效。有创机械通气治疗效果虽肯定,但因其存在创伤性和并发症等问题,影响其应用。而双水平正压通气(BiPAP)无创通气通过面罩或鼻罩对有自主呼吸的患者提供吸气、呼气双水平气道正压的压力支持。BiPAP无创通气已成功用于 Patients with chronic obstructive pulmonary disease (COPD) are often associated with type II respiratory failure, clinical routine with oxygen, anti-infection, open airway and other treatment is difficult to obtain satisfactory results. Although invasive mechanical ventilation treatment effect is certainly, but because of its traumatic and complications and other issues, affecting its application. BiPAP noninvasive ventilation provides inhalation and expiratory bi-level positive airway pressure support for patients with spontaneous breathing through masks or nasal masks. BiPAP noninvasive ventilation has been used successfully