慢性呼吸功能衰竭(呼衰)常由支气管肺疾患引起,病情复杂,治疗难度大,氧疗是重要治疗方法之一。我们在既往慢性呼衰氧疗中取得了一些成功的经验,同时也存在值得吸取的教训,现总结如下。1　氧疗浓度不当慢性呼衰属Ⅱ型,既有缺氧,又有二氧化碳潴留。此时呼吸中枢对二氧化碳的刺激 Chronic respiratory failure (respiratory failure) often caused by the bronchopulmonary disease, the condition is complicated, difficult to treat, oxygen therapy is one of the important treatment. We have had some successful experiences in previous chronic respiratory failure oxygen therapy, and there are also lessons worth learning from. We have summarized the findings below. An inappropriate oxygen concentration Chronic respiratory failure type Ⅱ, both hypoxia, there are carbon dioxide retention. The respiratory center at this time on carbon dioxide stimulation