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目的探讨慢性心力衰竭患者早期诊断中采用红细胞分布宽度检验的临床应用。方法入选我院符合标准的慢性心力衰竭患者117例，按照患者心力衰竭程度Ⅱ级、Ⅲ级、Ⅳ级的不同分为三组，每组39例，另选取39例同期体检健康人群作为对照组，采用红细胞分布宽度检验四组患者，分析其与慢性心力衰竭的关系，对比三组患者的病死率情况。结果研究显示，随着心力衰竭疾病程度的加重，患者红细胞分布宽度水平逐渐上升，四组间相比较，结果具有统计学差异（<0.05）。随着红细胞分布宽度的增加，患者的病死率逐渐升高，三组间相比较，结果具有统计学差异（<0.05）。结论红细胞分布宽度检验在慢性心力衰竭患者早期诊断中，对于临床明确其疾病程度起到重要的作用。“,”Objective To explore the clinical application of red blood cel distribution width detection in the early diagnosis of chronic cardiac failure.Methods 117 patients with chronic cardiac failure in our hospital were selected and divided into three groups according to Grade I ,Grade II and Grade IV of chronic cardiac failure,39 cases each group.In addition,39 healthy check-ups were selected as control group.The cor elation of red blood cel distribution width detection with chronic cardiac failure was analyzed and the fatality rate of three groups was compared.Results The results showed that the red blood cel distribution width of four groups was gradual y increased with the higher severity of chronic cardiac failure( <0.05);as the red blood cel distribution width was increased, the fatality rate of three groups was also higher ( <0.05).Conclusion In the early diagnosis of chronic cardiac failure,the detection of red blood cel distribution width is significant to confirm the severity of il ness in clinical practices.