急性呼吸窘迫综合征(ARDS)是多发生于心肺功能正常患者,由于肺外或肺内的严重疾病引起毛细血管炎症性损伤,通透性增加继发急性高通透性肺水肿和进行性缺氧性呼吸衰竭(Ⅰ型)的一种临床综合征,呼吸窘迫综合征发病急、发展迅速,如不及时救治,很快呼吸衰竭而死亡,其病死率高达50%～ Acute respiratory distress syndrome (ARDS) is a common occurrence in patients with normal cardiopulmonary function, due to severe pulmonary or pulmonary disease caused by capillary inflammatory injury, increased permeability secondary to acute high-permeability pulmonary edema and progressive lack of Oxygen respiratory failure (type Ⅰ) of a clinical syndrome, respiratory distress syndrome, acute onset, rapid development, if not timely treatment, respiratory failure and death soon, the mortality rate as high as 50% ~