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成人呼吸窘迫综合征(ARDS)的总死亡率60%.肺发生的ARDS,犹如肝脏发生暴发性肝衰竭,但血清转氨酶升高可提示急性肝坏死,而ARDS 至今尚缺乏早期诊断的单一试验,若有适用于所有患者的单一试验,将是很大进步,同时可试行早期治疗。ARDS 的基本异常是肺泡毛细血管膜的通透性增加.用带有放射性标记的二乙撑三胺五醋酸(DTPA)廓清试验,能测量其在肺水肿发生前从肺泡到肺循环的转移率,廓清率增加意味着肺泡上皮有漏出,此可与左心衰竭所致的肺水肿相鉴别。然而,吸烟者此结果无
The overall mortality of ARDS is 60%. ARDS in the lungs is like fulminant hepatic failure in the liver, but elevated serum aminotransferases may indicate acute hepatic necrosis. ARDS, however, still lacks a single trial of early diagnosis, A single trial for all patients will be a big step forward with early treatment trials. The basic abnormality of ARDS is the increase of the permeability of alveolar capillary membrane.Detection of alveolar to pulmonary circulation before pulmonary edema can be measured by radiolabeled diethyltriaminepentaacetic acid (DTPA) clearance test, An increase in the clearance rate means that the alveolar epithelium leaks, which can be differentiated from pulmonary edema due to left heart failure. However, smokers did not have this result