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Lancet Infect Dis:新冠肺炎死亡患者肺尸检特征研究

2020-06-09 MedSci原创 MedSci原创

在COVID-19患者中,肺病变的主要模式是弥漫性肺泡损伤,肺透明膜形成和肺细胞不典型增生比较常见的。重要的是,患者常伴有小动脉血管中血小板-纤维蛋白血栓,这一凝血病特征应是治疗的主要靶点之一

COVID-19主要特征为呼吸系统症状,有相当大比例的患者恶化为呼吸衰竭,住院患者中多达三分之一需要重症监护。近日研究人员就COVID-19死亡患者肺组织的病理学特征进行考察。
 
 
研究人员系统分析了意大利北部两家医院,2020年2月29日至3月24日期间死亡的38例COVID-19患者肺组织样本。平均每个肺组织中取出7个样本,在10%福尔马林中至少固定48小时。使用苏木精和伊红染色进行组织评估,使用炎性浸润和细胞成分免疫组化染色(包括用抗CD68、CD3、CD45、CD61、TTF1、p40和Ki-67的抗体染色)和电子显微镜病毒定位。
 
所有病例均表现为弥漫性肺泡损伤,处于渗出期和增殖期,包括毛细血管充血(所有病例)、肺细胞坏死(所有病例)、透明膜(33例)、间质和肺泡内水肿(37例)、II型肺细胞增生(所有病例),鳞状上皮化生伴异型性(21例),血小板-纤维蛋白血栓(33例)。所有病例均可见炎性浸润,主要由肺泡腔巨噬细胞(24例)和间质淋巴细胞(31例)组成。电镜显示病毒颗粒主要分布在肺细胞内。
 
在COVID-19患者中,肺病变的主要模式是弥漫性肺泡损伤,肺透明膜形成和肺细胞不典型增生比较常见的。重要的是,患者常伴有小动脉血管中血小板-纤维蛋白血栓,这一凝血病特征应是治疗的主要靶点之一。
 
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    2021-04-23 howi
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    2020-08-27 14818eb4m67暂无昵称

    学习了

    0

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    2020-06-11 zhouqu_8
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    2020-06-09 公卫新人

    新冠肺炎,疫情何时才能消失

    0

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    2020-06-09 goodbing

    顶刊就是不一样,质量很高,内容精彩!学到很多

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