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American Journal of Clinical Nutrition, Vol 31, 1841-1853, Copyright © 1978 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Criteria for choosing amino acid therapy in acute renal failure

GL Blackburn, G Etter and T Mackenzie

Metabolic studies were performed on 19 patients with acute renal failure. Therapy included intravenous hyperalimentation using 15 to 20 g of essential amino acids or 20 to 40 g of essential plus nonessential amino acids and hypertonic glucose (37 to 50%). The effect of this parenteral feeding appears to be primarily pharmacological. Hypertonic glucose promotes the hyperinsulinemia important to be membrane function, the operation of the sodium pump, and cell metabolism. Administration of high biological value crystalline amino acdis potentiates the effect of insulin by inhibiting protein breakdown and promoting protein synthesis, particularly in muscle. This reduces tissue catabolism and urea formation, and promotes potassium, magnesium, and phosphate homeostasis. The branched-chain ketogenic amino acids valine, leucine, and isoleucine may be of particular importance. When indicated, administration of renal failure hyperalimentation and peritoneal or hemodialysis can be expected to complement each other and accelerate recovery. This intravenous fluid therapy, in turn, must be coordinated with proper hemodynamics, usually requiring a colloidal solution to maintain intravascular volume, and cardiotrophic agents such as digitalis and dopamine. Early use of renal failure can be expected to demonstrate the most striking response in terms of survival, early recovery from acute renal failure, and the preservation of physiological homeostasis.


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