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  • Title: [Effect of amino acid infusions on fructose-induced chemical blood changes in intensive care patients].
    Author: Förster H, Dudziak R, Steuer A, Boecker S.
    Journal: Infusionsther Klin Ernahr; 1976 Aug; 3(4):228-35. PubMed ID: 821861.
    Abstract:
    Influence of the infusion of amino acid solutions on metabolic changes caused by parenteral nutrition with fructose. In eleven unconscious polytraumatized patients of the intensive care station, intravenous infusions with fructose (0.5 g/kg bodyweight and hour) were performed. During the last 24 hours of the 72 hours infusion period, amino acid solutions (1.0 g/kg bodyweight and 24 hours) were given in addition to fructose. The investigations were initiated after an eight hour "starvation period" preinfusion. During this time only electrolytes were given. For comparison 48 hours intravenous infusions with fructose (0.5 g/kg B.W. and hour) were performed with six healthy volunteers. In both groups of subjects the intravenous fructose was metabolized very well, renal losses were less than 2% of the whole amount given. Considering the metabolic healthy volunteers, the blood glucose concentration remained unaltered despite the high dosage carbohydrate infusion. The patients of the intensive care station showed a slight increase of blood glucose values which were elevated already before infusion. Additionally, during fructose infusions, the increase in blood lactate concentration was more pronounced in the intensive care patients than in healthy volunteers. However, in contrast to the healthy volunteers, no increase in serum bilirubin concentration and only a slight increase in serum uric acid concentration was observed in the intensive care patients, despite the high-dose fructose infusion for 72 hours. Additionally, the fructose-induced hypertriglyceridemia was of a minor degree in the intensive care patients. In volunteers the increase in triglyceride concentration was 200% in 48 hours, whereas only a 50% increase was observed in intensive care patients during 72 hours. The pronounced nitrogen sparing effect of fructose in healthy volunteers was not seen in the intensive care patients to the same degree. The most prominent side effect of the fructose infusions in intensive care patients was the strong decrease in serum phosphate concentration seen in some patients. The additional infusion of amino acid solutions lead to a further diminution of the slight alterations caused by fructose infusions. In conclusion, it can be stated that total parenteral nutrition with fructose and amino acid solutions is possible in intensive care patients without danger of side effects. However, it should be mnetioned that hyperalimentation can cause fatty liver.
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