Erythropoiesis-stimulating protein therapy and the decline of renal function: a retrospective analysis of patients with chronic kidney disease

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Abstract
Background/Aims: Previous studies have hinted at possible associations between anemia and progression of renal disease. The study objective was to determine whether treatment with erythropoiesis-stimulating proteins (ESPs) can curb the rate of decline in renal function in pre-dialysis patients with chronic kidney disease (CKD).Methods: Observational, before/after analysis using electronic medical records from the Veterans Administration (VA). Included patients had at least two measurements of serum creatinine levels before and after ESP treatment initiation. The Cockcroft–Gault formula was used to derive estimates of glomerular filtration rate (GFR). Rate of renal function decline prior to and following initiation of therapy were compared.Results: One hundred and twenty two patients with renal impairment levels of Stage 3 (moderate) or Stage 4 (severe) at ESP treatment initiation were identified. Over 80% of patients initiated therapy with either Grade 1 or Grade 2 anemia. The rate of renal functi...