The Predictive Value Of Red Cell Volume Distribution Width In Long-term Prognosis Of Patients With Acute Non ST Segment Elevation Myocardial Infarction Undergoing Percutaneous Coronary Intervention

Objective: To investigate the predictive value of red cell volume distribution width(RDW)in the long-term prognosis of patients with acute non ST segment elevation myocardial infarction(NSTEMI)undergoing percutaneous coronary intervention(PCI).Methods: A total of 879 patients suffering from NSTEMI treated by PCI diagnosed in Shengjing Hospital of China Medical University from December 1 2012 to October 31 2014 were enrolled for the study.On the basis of the optimal threshold of the ROC,the patients were divided into low RDW group(n=482,RDW?14.28)and high RDW group(n=397,RDW>14.28).The Kaplan-Meier method was used to assess the survival rate of two groups of patients without cardiovascular events and compared with Log-rank test.The predictive value of RDW in long-term prognosis of NSTEMI patients undergoing PCI was then analyzed by Cox regression analysis.Results: There was significant difference between the two groups in the survival rate of non all-cause death and cardiac death events(P<0.05).Cox analysis indicated that RDW was a independent risk predictor for all cause mortality and cardiac mortality in such patients.Conclusion: RDW is a simple and effective clinical index for predicting the long-term prognosis of NSTEMI patients undergoing percutaneous coronary intervention,when RDW is over 14.28,the mortality increases significantly and the long-term prognostic is poor.