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呼吸衰竭是由多种原因引起的肺通气或换气功能严重障碍,导致缺氧或伴有二氧化碳潴留,引起一系列生理功能紊乱和代谢障碍的临床综合征。按病程,呼衰可有急性与慢性之分。急性呼衰是指原来肺功能正常,由于某些突发因素,使呼吸功能发生明显障碍者;而慢性呼衰是在原有慢性阻塞性肺病基础上,又因某种原因,逐渐使肺功能障碍加重,而引起缺氧和二氧化碳潴留者。
Respiratory failure is caused by a variety of causes of severe pulmonary ventilation or ventilation dysfunction, leading to hypoxia or carbon dioxide retention, causing a series of physiological dysfunction and metabolic syndrome clinical syndrome. According to the course of disease, respiratory failure can have acute and chronic points. Acute respiratory failure refers to the original normal lung function, due to some unexpected factors, significant disability respiratory function who; chronic respiratory failure is based on the original chronic obstructive pulmonary disease, and for some reason, and gradually make the lung dysfunction Aggravate, and cause hypoxia and carbon dioxide retention.