Effects on Renal Function of a Low-Nitrogen Diet Supplemented with Essential Amino Acids and Ketoanalogues and of Hemodialysis and Free Protein Supply in Patients with Chronic Renal Failure

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Abstract
Creatinine clearance has been repeatedly measured in three groups of chronic uremics. In the first control group (31 cases), following a conventional low-protein diet, creatinine clearance declined linearly with time. In the second group (12 cases), following a very low nitrogen diet supplemented with essential amino acids and ketoanalogues, creatinine clearance remained practically constant with only one exception in which it continued to decline. In the third group of uremics (13 cases) on repeated dialysis therapy, the deterioration of creatinine clearance was markedly accelerated. The possible explanations and the practical implications of these findings are discussed.