pulmonary edema 區分cardiogenic pulmonary edema or acute lung injury

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2819058/?report=abstract

Determining the Etiology of Pulmonary Edema by the Edema Fluid-to-Plasma Protein Ratio


使用 suction catheter 到distal airway, 取得edema fluid
再測 edema fluid 和plasma 的total protein

EF/PL ratio > 0.84 favor acute lung injury
EF/PL ratio > = 0.65 higher mortality