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什么是阿瑟反应
更新时间: 2020-09-17 00:00:00  

1、阿瑟反应是指接种乙肝疫苗引发的不良反应。通常接种处局部明显红肿,可见数个淤血点,局部皮温升高。

2、此反应的发生机制是前几次注射的异种血清刺激机体产生大量抗体,当再次注射相同抗原时,由于抗原不断由皮下向血管内渗透,血流中相应的抗体由血管壁向外弥散,两者相遇于血管壁,形成沉淀性的免疫复合物,沉积于小静脉血管壁基底膜上,导致坏死性血管炎甚至溃疡。当局部出现时,若静脉内注射同种抗原,则可引起过敏性休克。

关键词: 什么 反应

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