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Intensive Care Medicine
Published in: Intensive Care Medicine 11/2005

01-11-2005 | Original

Impact of anemia on outcome in critically ill patients with severe acute renal failure

Authors: Damien du Cheyron, Jean-Jacques Parienti, Mohamed Fekih-Hassen, Cédric Daubin, Pierre Charbonneau

Published in: Intensive Care Medicine | Issue 11/2005

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Abstract

Objective

To evaluate the prognostic value of hemoglobin levels in critically ill patients with acute renal failure (ARF) requiring dialysis.

Design and setting

A prospective observational cohort study in two adult medical ICUs.

Patients

206 consecutive patients with ARF who required dialysis. Overall 28-day mortality was 48%.

Measurements and results

At ICU admission mean hemoglobin level was 9.1±2.1 g/dl. By ROC curve analysis the threshold value of hemoglobin with the highest sensibility/specificity was 9 g/dl. At baseline 63% of patients had anemia, defined as initial hemoglobin below 9 g/dl. Kaplan-Meier analysis showed that these patients had lower survival rate than those with hemoglobin above 9 g/dl. By multivariable analysis three factors were independently associated with 28-day death: hemoglobin lower than 9 g/dl (adjusted odds ratio 2.4, 95% CI 1.1–5.2), age, and SOFA score. Based on age and SOFA a matched cohort analysis of 67 pairs of ARF patients with or without anemia found similar results regarding the negative impact of anemia on outcome. Finally, a multivariable logistic regression analysis on matched cohort identified hemoglobin level below 9 g/dl (adjusted odds ratio 1.32, 95%CI 1.15–1.46), continuous renal replacement therapy, and vasoactive therapy as independent predictors of 28-day death.

Conclusions

These results suggest that initial hemoglobin level could be helpful in identifying patients with ARF requiring dialysis at high risk of death.
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Metadata
Title
Impact of anemia on outcome in critically ill patients with severe acute renal failure
Authors
Damien du Cheyron
Jean-Jacques Parienti
Mohamed Fekih-Hassen
Cédric Daubin
Pierre Charbonneau
Publication date
01-11-2005
Publisher
Springer-Verlag
Published in
Intensive Care Medicine / Issue 11/2005
Print ISSN: 0342-4642
Electronic ISSN: 1432-1238
DOI
https://doi.org/10.1007/s00134-005-2739-5

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