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Related Experiment Videos

Normalization of haemoglobin: why not?

C Jacobs1

  • 1Department of Nephrology, Hôpital de la Pitié Salpêtrière, Paris, France.

Nephrology, Dialysis, Transplantation : Official Publication of the European Dialysis and Transplant Association - European Renal Association
|May 20, 1999
PubMed
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Normalizing hemoglobin in chronic renal failure patients showed no safety differences but did not improve left ventricular function. High hematocrit targets increased mortality in heart failure patients.

Area of Science:

  • Nephrology
  • Cardiology
  • Hematology

Background:

  • Erythropoietin (EPO) therapy aims to normalize hemoglobin in anemic chronic renal failure (CRF) patients.
  • The benefits of complete hemoglobin normalization versus partial correction remain under investigation.

Purpose of the Study:

  • To evaluate the safety and efficacy of normalizing hemoglobin levels in patients with chronic renal failure.
  • To assess the impact of hemoglobin normalization on cardiac function and mortality.

Main Methods:

  • Four prospective randomized trials were analyzed.
  • Trials included hemodialysis, peritoneal dialysis, and pre-dialysis patients with varying comorbidities.
  • Hemoglobin targets ranged from subnormal levels to full normalization.

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Main Results:

  • No significant safety differences were observed between subnormal and normal hemoglobin targets in the Scandinavian trial.
  • The Canadian trial showed worsening left ventricular cavity volume in patients with normal LV volume at baseline when targeting higher hemoglobin.
  • The US trial (Normal Hematocrit Cardiac Trial) was stopped due to increased mortality in the high hematocrit group (42%) compared to the control group (30%).
  • Within the US trial, mortality decreased with increasing hematocrit, suggesting higher hematocrit itself wasn't the sole cause of increased mortality.

Conclusions:

  • Avoid targeting a hematocrit of 42% in hemodialysis patients with clinically evident ischemic heart disease or congestive heart failure.
  • Further research is needed to determine optimal hemoglobin targets for different patient groups.
  • Partial hemoglobin correction may be sufficient, and normalization might not benefit all CRF patients.