急性呼吸窘迫综合征 (acuterespiratorydistresssyndrome,ARDS)是指心源性以外的各种肺内外致病因素所导致的急性、进行性缺氧性呼吸衰竭。脓毒症时体内大量炎症递质及细胞因子的释放,白细胞浸润导致急性肺损伤,肺泡及肺血管内皮受损,血管通透性增高,血液成分渗漏,肺间质水 Acute Respiratory Distress Syndrome (ARDS) refers to the acute and progressive hypoxic respiratory failure caused by a variety of pathogenic factors outside and outside the heart. A large number of inflammatory mediators and release of cytokines in sepsis, leukocyte infiltration lead to acute lung injury, impaired alveolar and pulmonary vascular endothelium, increased vascular permeability, leakage of blood components, interstitial lung water