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本文以左室射血分数不同的117例心衰患者为观察对象，探讨红细胞分布宽度与临床心衰的联系。“,”In this clinical study,82 patients of heart failure with preserved LVEF and 35 patients of heart failure with reduced LVEF were included.RDW/HDW of each patient were determined,and association between that and severity of heart failure was assessed.Simple low-cost as the RDW/HDW test is,the results proved the usefulness of RDW/HDW to predict the severity of dif erent heart failure.