呼吸衰竭是由于呼吸生理功能障碍 ,临床上根据气体交换异常发生持续的时间可分为急性与慢性两类。又根据病理生理和血气分析结果将呼吸衰竭分为Ⅰ型呼吸衰竭和Ⅱ型呼吸衰竭。关于呼吸衰竭的发病机制尚不十分清楚 ,近年来 ,国内外学者从细胞分子水平进行了较深入的研究 ,并对呼 Respiratory failure is due to respiratory physiology dysfunction, clinically based on the abnormal gas exchange occurs for a sustained period can be divided into two categories of acute and chronic. According to the results of pathophysiology and blood gas analysis of respiratory failure will be divided into type Ⅰ respiratory failure and type Ⅱ respiratory failure. On the pathogenesis of respiratory failure is not yet fully understood, in recent years, scholars at home and abroad from the cellular and molecular level conducted a more in-depth study, and call