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Anemia management in chronic kidney disease: what have we learned after 17 years?

David M Spiegel1

  • 1Division of Renal Diseases and Hypertension, University of Colorado Health Sciences Center, Denver, Colorado 80262, USA. david.spiegel@uchsc.edu

Seminars in Dialysis
|August 9, 2006
PubMed

Insights

Anemia management in chronic kidney disease (CKD) is complex. While retrospective data link higher hemoglobin to better outcomes, prospective trials show potential harm, suggesting caution with erythropoietin therapy.

Area of Science:

  • Nephrology
  • Hematology
  • Internal Medicine

Background:

  • Anemia is common in chronic kidney disease (CKD).
  • Retrospective studies suggest higher hemoglobin levels correlate with improved patient outcomes.
  • Prospective trials investigating higher hemoglobin targets have yielded concerning results.

Purpose of the Study:

  • To analyze the conflicting evidence regarding anemia management in CKD patients.
  • To evaluate the safety and efficacy of targeting higher hemoglobin levels.
  • To inform current guidelines for anemia treatment in CKD.

Main Methods:

  • Review of retrospective data analyses.
  • Examination of results from two large prospective trials in CKD patients.
  • Comparative analysis of outcomes between different hemoglobin target groups.

Main Results:

  • Retrospective data show a correlation between high hemoglobin and better outcomes (mortality, hospitalization, LVH, quality of life).
  • Prospective trials were halted due to trends toward worsening outcomes in higher hemoglobin groups.
  • Patients achieving high hemoglobin with low/no erythropoietin may differ from the general CKD population.

Conclusions:

  • Targeting hemoglobin levels above current recommendations with intermittent erythropoietin is not supported by current evidence.
  • Further randomized prospective trials are needed to demonstrate safety and efficacy.
  • Anemia management in CKD requires careful consideration of conflicting data.

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