Nutrition and mortality in hemodialysis.

Journal of the American Society of Nephrology : JASN
J Bergström

Abstract

Protein-energy malnutrition is present in a large proportion of maintenance hemodialysis (HD) patients, and it is associated with increased morbidity and mortality. The protein requirements are increased because of the presence of endocrine and metabolic factors related to loss of renal function, the HD procedure, and comorbidity factors, which all stimulate net protein catabolism. The intake protein and energy are frequently reduced because of the underlying disease, psychosocial factors, and uremic anorexia. However, the extent to which underdialysis contributes to anorexia and malnutrition is still not well defined. Malnutrition is generally not recognized as a common direct cause of death as reflected in health statistics, except in the highest age groups. Anthropometric and biochemical signs of malnutrition are associated with increased mortality. A low serum albumin level is a strong predictive risk factor that may reflect not only or mainly protein malnutrition but also the influence of several other morbidity factors (overhydration, infection, chronic disease and others) that may entail an increased risk of death. Low levels of serum creatinine (low muscle mass), serum cholesterol (energy depletion), and BUN and low ure...Continue Reading

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