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Nat Rev Nephrol. 2011 Nov 1;8(1):57-60. doi: 10.1038/nrneph.2011.172.

Effluent volume and dialysis dose in CRRT: time for reappraisal.

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  • 1Division of Nephrology, University of São Paulo, Avenida Doutor Enéas de Carvalho Aguiar 255, CEP 05403-000, São Paulo, Brazil.

Abstract

The results of several studies assessing dialysis dose have dampened the enthusiasm of clinicians for considering dialysis dose as a modifiable factor influencing outcomes in patients with acute kidney injury. Powerful evidence from two large, multicenter trials indicates that increasing the dialysis dose, measured as hourly effluent volume, has no benefit in continuous renal replacement therapy (CRRT). However, some important operational characteristics that affect delivered dose were not evaluated. Effluent volume does not correspond to the actual delivered dose, as a decline in filter efficacy reduces solute removal during therapy. We believe that providing accurate parameters of delivered dose could improve the delivery of a prescribed dose and refine the assessment of the effect of dose on outcomes in critically ill patients treated with CRRT.

PMID:
22045240
DOI:
10.1038/nrneph.2011.172
[PubMed - indexed for MEDLINE]
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