Prognostic value of red cell distribution width in elderly patients undergoing maintenance hemodialysis

摘要

cqvip:Objective:To investigate the predictive value of red blood cell distribution width(RDW)for all-cause mortality in elderly patients undergoing maintenance hemodialysis(MHD).Methods:We retrospectively analyzed the data of 172 elderly patients who initiated maintenance hemodialysis from June 2013 to June 2018.Basic data on demographic,dialysis,laboratory data and clinic outcomes were recorded.Compare the basic information of death and survival groups,such as general characteristics baseline laboratory data,baseline RDW and time average RDW during the follow-up;Cox regression analysis was used to analyze the risk factors of all-cause mortality,and predictive value of RDW for all-cause death in elderly maintenance hemodialysis patients.Results:A total of 172 elderly MHD patients were inrolled in this study with age of(66.3±6.1)years old and the dialysis duration of(27.3±15.3)months,including 94 males(54.6%).37 patients died during the follow-up period.Non-survivors had higher levels of RDW at baseline,higher time-average RDW,higher blood PTH,higher blood C-reactive protein(CRP),higher blood brain natriuretic peptide(BNP)(P<0.05)and lower albumin(P<0.05).Multivariate Cox regression analysis suggested that RDW,serum albumin,serum CRP,and serum BNP were independent risk factors for all-cause mortality in elderly patients with MHD.The receiver operating characteristic curve(ROC)showed that RDW=14.75%was the best cut-off point for predicting all-cause mortality in elderly patients undergoing MHD(P<0.01).Conclusions:High RDW is an independent risk factor for all-cause mortality in elderly patients with MHD,and it has important value for prognosis.