Lack of adequate predialyis care and previous hemodialysis, but not hemoglobin variability, are independent predictors of anemia-associated mortality in incident Brazilian peritoneal dialysis patients: results from the BRAZPD study

Abstract

Background/aims: The objective of this study was to analyze the prevalence of anemia and variability of hemoglobin (Hb) values in peritoneal dialysis (PD) patients, to establish its associated factors and their impact on clinical outcomes in a large cohort of patients starting PD treatment.

Methods: Data were collected monthly in incident patients, who were followed until the primary endpoint (death from all causes) or until leaving the study.

Results: 2,156 patients starting PD were included. The prevalence of Hb lower than 11 g/dl was 57% at baseline and decreased to 38% at the 4th month. Lack of adequate predialysis care and previous treatment with hemodialysis were the most important factors associated with anemia. Anemia was an independent predictor of mortality. There were no differences in patient survival throughout the different groups of Hb variability.

Conclusion: Our data point to the need of identifying other risk factors for anemia and aggressively interfere with the modifiable ones in order to correct anemia and decrease mortality in this group of high-risk patients.