慢性阻塞性肺病 (ＣＯＰＤ)患者常反复发生慢性呼吸衰竭 ,在临床上仅以常规鼻导管低流量持续吸氧及呼吸兴奋剂等治疗往往难以取得满意效果 ,通常需气管插管或气管切开行机械通气治疗 ,这不但会增加病人痛苦 ,产生许多合并症 ,而且由于患者呼吸肌疲劳对呼吸机产生依赖性 ,从而造 Chronic obstructive pulmonary disease (COPD) patients often recurrent chronic respiratory failure, in the clinical practice of conventional low-flow continuous nasal oxygen and respiratory stimulants and other treatment is often difficult to obtain satisfactory results, usually tracheal intubation or tracheostomy Mechanical ventilation, which will not only increase the patient’s pain, resulting in many comorbidities, but also because of respiratory muscle fatigue in patients with reliance on the ventilator to create