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慢阻肺Ⅱ型呼吸衰竭(COPD-Ⅱ-RF)是指慢性阻塞性肺疾患(COPD)所引起的呼吸功能损害,导致缺氧和二氧化碳潴留,由此产生一系列生理功能紊乱及代谢障碍的临床综合征。由于其呼吸衰竭发生缓慢,持续时间较长,呼吸中枢适应了高碳酸血症的内环境,此时仅靠缺氧刺激外周化学感受器来维持通气,所以氧疗较Ⅰ型呼吸衰竭更为复杂。本文就Ⅱ型呼吸衰竭患者的氧疗作一介绍。 1 氧疗的适应症 适应症 PaCO_2>6.0Okpa.PaO_2<6.65kpa.静脉混合血的氧张压(PVO_2)<4.66gkpa。
Chronic obstructive pulmonary disease (COPD-Ⅱ-RF) refers to the respiratory dysfunction caused by chronic obstructive pulmonary disease (COPD), resulting in hypoxia and carbon dioxide retention, resulting in a series of physiological dysfunction and metabolic disorders Clinical syndrome. Because of its respiratory failure occurs slowly, longer duration, the respiratory center to adapt to the hypercapnia in the environment, this time rely on hypoxia to stimulate the peripheral chemoreceptor to maintain ventilation, so oxygen therapy is more complex than type Ⅰ respiratory failure. In this paper, patients with type Ⅱ respiratory failure to make an introduction of oxygen therapy. 1 Indications of oxygen therapy Indications PaCO_2> 6.0Okpa.PaO_2 <6.65kpa. Intravenous oxygen pressure (PVO_2) <4.66gkpa.