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The absence of protein--sparing effects utilizing crystalline amino acids in stressed patients.

Abstract
The protein-sparing effects of the peripheral infusion of crystalline amino acids (PAA) was studied metabolically in selected surgical patients subjected to various degrees of stress. Twenty-one patients (sixteen cancer patients receiving chemotherapy and/or radiotherapy, three with major abdominal traumatic injuries and four with paralytic ileus) were infused with 2 1/24 hours of a solution of 4.2% Travasol amino acids with only 5% glucose as a source of nonprotein calories. One-half of the cancer patients were also allowed ad libitum oral intake of a regular hospital diet or Vivonex-HN. The nutritional status was evaluated by measuring changes in body weight, serum albumin levels and nitrogen balance. Body weight decreased in only the trauma patients. When these solutions were the sole source of nutrients all patients were in negative nitrogen balance and had significant decreases in their serum albumin levels. Serum albumin levels were preserved only when extra sources of calories were provided. The infusion of the crystalline amino acids without adequate levels of nonprotein energy did not conserve protein in these stressed patients.
AuthorsN Ching, C J Mills, C Grossi, J W Angers, G Jham, H Zurawinsky, T F Nealon Jr
JournalAnnals of surgery (Ann Surg) Vol. 190 Issue 5 Pg. 565-70 (Nov 1979) ISSN: 0003-4932 [Print] United States
PMID116604 (Publication Type: Comparative Study, Journal Article, Research Support, U.S. Gov't, P.H.S.)
Chemical References
  • Amino Acids
  • Fatty Acids, Nonesterified
  • Proteins
  • Serum Albumin
  • Nitrogen
Topics
  • Abdominal Injuries (metabolism)
  • Amino Acids (administration & dosage)
  • Body Weight
  • Energy Intake
  • Energy Metabolism
  • Fatty Acids, Nonesterified (blood)
  • Humans
  • Intestinal Pseudo-Obstruction (metabolism)
  • Neoplasms (metabolism)
  • Nitrogen (metabolism)
  • Parenteral Nutrition
  • Proteins (metabolism)
  • Serum Albumin (analysis)
  • Stress, Physiological (metabolism)
  • Wounds, Gunshot (metabolism)

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