急性肺损伤或急性呼吸窘迫综合征 (ＡＬＩ/ＡＲＤＳ)是指由心源性以外的各种肺内外致病因子导致的急性、进行性缺氧性呼吸衰竭。由肺内炎症细胞 (如中性粒细胞、巨噬细胞等 )为主导的肺内炎症反应失控导致的肺泡毛细血管膜损伤是形成肺毛细血管通透性增高的病理基础。目前国内 Acute lung injury or acute respiratory distress syndrome (ALI / ARDS) refers to acute and progressive hypoxic respiratory failure caused by a variety of extrapulmonary and causal factors other than cardiogenic origin. Pulmonary alveolar capillary membrane damage caused by the inflammatory reaction in the lung, such as neutrophils, macrophages, etc., is a pathological basis for the formation of pulmonary capillary hyperpermeability. At present