对伴发高碳酸血症的慢性呼吸不全患者,病情急剧恶化时,常在服用各种药剂的同时还需采用插管下人工呼吸器。但是,脱离人工呼吸器有时是极其困难的,通常施行气管切开下的长期人工呼吸器控制。相反,非插管下辅助呼吸法,虽然其效果不如插管下人工呼吸法,但毋须插管,且应用较为简便。胸廓型负压呼吸(CNPV)是此类 For patients with chronic hypercapnia in patients with chronic respiratory disease, the condition deteriorated rapidly, often taking various agents also need to use intubation under the respirator. However, it is sometimes extremely difficult to break away from an artificial respirator, often with long-term respirator control under tracheotomy. In contrast, non-intubated assisted breathing, although less effective than intubated artificial respiration, does not require intubation and is easier to administer. Thoracic negative pressure breathing (CNPV) is such