Ever since Ashbaugh and coauthors described acute respiratory distress syndrome (ARDS) in 1967, attempts have been made to predict its outcome. This is not an easy task since there are no biological markers for ARDS, and appropriate diagnosis of the disease itself has been continually questioned. ARDS is a severe, generalised, inflammatory response of the respiratory system caused by either pulmonary or non-pulmonary insults, which does not resolve in a short period of time. Severe hypoxaemia caused by atelectasis, as a result of obesity, surgery, or trauma, or hypoxaemia caused by fluid overload or cardiogenic shock is not ARDS, and appropriate management of these patients results in a markedly different presentation 24 h after diagnosis to that of patients with ARDS.

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对ARDS结果的预测：我应该使用哪种工具？

自从Ashbaugh及其合著者在1967年描述急性呼吸窘迫综合征（ARDS）以来，就一直在尝试预测其结果。这不是一件容易的事，因为没有ARDS的生物学标记，并且对疾病本身的适当诊断一直受到质疑。ARDS是由肺部或非肺部损伤引起的严重的，全身性的呼吸系统炎性反应，这种反应在短期内无法解决。由肥胖，手术或创伤导致的肺不张导致的严重低氧血症，或因体液超负荷或心源性休克引起的低氧血症不是ARDS，对这些患者的适当治疗导致确诊后24 h的表现与患者明显不同与ARDS。