• Hongyong Liu, Yuqiu Ye, Yanbing Chen, Yunqiang Zhang, Shaomin Li, Wentao Hu, Rongqian Yang, Zhesi Zhang, Hongquan Peng, Linsheng Lv, and Xun Liu.
• Division of Nephrology, The Third Affiliated Hospital of Sun Yat-sen University, Yuedong Hospital, Meizhou, China.
• J. Investig. Med. 2019 Aug 1; 67 (6): 1002-1008.

AbstractAnemia is one of the major complications in predialysis patients with chronic kidney disease (CKD). A clearer cognition of the prognostic impact of hemoglobin (Hb) or hematocrit (Hct) target on the outcomes of predialysis patients with CKD is significant. This article aims to establish the suitable hemoglobin target to provide clinical guidance. MEDLINE, EmBase, the Cochrane Library and other databases were searched with both MeSH terms and keywords to gather researches that assessed all-cause mortality, stroke, treatment of renal replacement, and transfusion. The meta-analysis was accomplished via Revman 5.3 version. Totally, 13 eligible studies involving 7606 patients were included. There was a significantly lower risk of transfusion (risk ratio (RR) 0.59, 95% CI 0.52 to 0.67; p<0.00001) in the higher hemoglobin group than in the lower one. However, no significant difference was found in all-cause mortality (RR 1.10, 95% CI 0.98 to 1.23; p=0.11), stroke (RR 1.32, 95% CI 0.82 to 2.10; p=0.25) and treatment of renal replacement including hemodialysis, peritoneal dialysis and renal transplant (RR 1.08, 95% CI 0.95 to 1.22; p= 0.23) between the higher hemoglobin group and the lower one. The results favor the higher hemoglobin target. To target the higher hemoglobin when treating predialysis patients with CKD may decrease the risk of transfusion without increasing the risk of death, stoke, and treatment of renal replacement.© American Federation for Medical Research 2019. No commercial re-use. See rights and permissions. Published by BMJ.

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