目的研究肺表面活性蛋白A（SP-A）在肺出血新生儿支气管肺泡灌洗液（BALF）中的变化及其与预后的关系。

Objective To study the change of surfactant protein A(SP-A)in bronchoalveolar lavage fluid(BALF)and the relationship with prognosis in newborns with pulmonary hemorrhage.

youdao

目的研究肺表面活性蛋白A（SP-A）在肺出血新生儿支气管肺泡灌洗液（BALF）中的变化及其与预后的关系。

Objective To study the change of surfactant protein A(SP-A)in bronchoalveolar lavage fluid(BALF)and the relationship with prognosis in newborns with pulmonary hemorrhage.

youdao