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红细胞分布宽度-易被忽视的预后标志物 被引量:23

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摘要 红细胞分布宽度(red blood cell distribution width,RDW)是全血细胞常规检测项目之一,直接反应了循环红细胞体积大小的变异程度.通过血液分析仪内小孔的一瞬间,计数电路得到一个细胞体积大小相应的脉冲,通过计算脉冲信号,得到相应的体积及细胞数,经处理而得RDW[1].临床上常根据该指标并结合红细胞平均容积(mean corpuscular volume,MCV)进行贫血的鉴别诊断,如缺铁性贫血患者,可因无效造血导致红细胞体积变异度增加,RDW增高.而单纯VitB12缺乏的大细胞性贫血患者,RDW并无改变[2].一直以来,若血常规未提示贫血,临床医生几乎从来不会关注这项指标.
作者 孙星河 杜昕
出处 《心肺血管病杂志》 CAS 2014年第3期449-452,共4页 Journal of Cardiovascular and Pulmonary Diseases
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