Determinants of N-terminal pro-brain natriuretic peptide variation in hemodialysis patients and prediction of survival.
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CitationBlood Purif. 2014, 37(2):138-45
AbstractN-Terminal pro-brain natriuretic peptide (NT-proBNP) is a predictor of cardiac events and death in the general population and in chronic kidney disease. There is limited information on how natriuretic peptides vary in dialysis patients. The aim of this study was to analyze NT-proBNP variability, factors predicting its variability and survival related to NT-proBNP variability.
A prospective 3-month observational study of prevalent hemodialysis patients with monthly measurements of NT-proBNP was carried out. A total of 211 hemodialysis patients were included, and mortality was recorded during 52 months of follow-up.
Inflammation was the strongest predictor of NT-proBNP variability. Patients with constantly high NT-proBNP had an increased risk of death adjusting for age, sex, dialysis vintage and comorbidity but not when also adjusting for nutritional status.
Longitudinal changes in NT-proBNP are associated with changes in inflammation, nutritional status, age and comorbidity. Due to strong interactions with predictors of mortality such as nutritional status, we were unable to confirm NT-proBNP as an independent marker for mortality in dialysis patients.
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