Objective the purpose of this study is to investigate the correlation of RDW and different pathological types of acute appendicitis(AA).Methods According to the pathological classification,AA can be divided into pure,suppurative and gangrenous AA.The RDW values were compared among the 3 kinds of AA patients,and compared with control group.Correlation analysis were performed in patients with the 3 types of AA respectively.ROC was used to analyse RDW′s the diagnosic value for different types of AA.Results In patients with pure and suppurative AA,RDW values were statistically different from those in control group(P <0.05),and weren′t correlated with WBC count(P >0.05);while in patients with gangrenous AA,RDW values were not statistically different from those in control group,and were positively correlated with WBC count(r=0.646,P <0.05).Conclusion The decline RDW is correlated with simple and suppurative AA,and can provide some reference for the diagnosis of simple and suppurative AA,but not be used as diagnostic indicator because the sample quantity is not enough in the study.

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