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当前学科：新生儿常见疾病及诊治技术
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孕30周顺产，生后6小时出现青紫，进行性加重。查体：面色青灰，呼吸急促，呻吟，双肺深呼吸时偶闻细小水泡音，X线片示：双肺透明度减低，有细小颗粒，伴支气管充气征。主要治疗首选（）
A . A.抗痨治疗
B . 肺泡表面活性物质
C . 对症治疗和抗病毒
D . 用有效抗生素和对症治疗
E . 镇静、化痰、抗炎
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