Jirapinyo P, Muangsri S, Komoltri J, Chaichanwatanakul K, Limsathayourat N
Department of Pediatrics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.
J Med Assoc Thai. 1992 Mar;75(3):163-7.
The correlation between osmolality and specific gravity of parenteral nutrition solutions containing various concentrations of amino acid and glucose were studied. There is good correlation between osmolality and specific gravity up to 1,000 mOsmol/kg H2O and 1.050, respectively. There are strong correlations between osmolality and amino acid concentration at each concentration of glucose. An equation which can be applied for quick calculation of osmolality of the solution from amino acid and glucose concentrations is: Osmolality (mOsmol/kg H2O) = 74.36 G + 163.91 A - 36.56. The results of this study can be adopted by all physicians for quick assessment of the osmolality of the PNS before administration to patients.
研究了含有不同浓度氨基酸和葡萄糖的肠外营养溶液的渗透压与比重之间的相关性。分别在渗透压高达1000 mOsmol/kg H₂O和比重高达1.050时，渗透压与比重之间存在良好的相关性。在每种葡萄糖浓度下，渗透压与氨基酸浓度之间都存在强相关性。一个可用于根据氨基酸和葡萄糖浓度快速计算溶液渗透压的方程为：渗透压（mOsmol/kg H₂O）= 74.36G + 163.91A - 36.56。本研究结果可供所有医生在给患者输注肠外营养溶液前快速评估其渗透压时采用。
