[The role of glucose-1-phosphate in total parenteral nutrition protocols]

The results of a clinical study to evaluate the use of glucose-1-phosphate for phosphate supplementation to a group of 8 surgical patients receiving standardized total parenteral nutrition are presented. Average phosphate (p + 0.001), calcium (NS) and magnesium (NS) plasma concentrations increased during total parenteral nutrition. Positive average daily balances were obtained: 8.1 + 14.8, 4.5 + 4.3 and 1.8 + 3.3 mmol/day for phosphate, calcium and magnesium respectively. These findings support the hypothesis of higher bioavailability of glucose-1-phosphate with respect to inorganic phosphate. On the other hand, hyperphosphatemia was a frequent situation (45.8%); this fact suggests the need for reviewing phosphate daily requirements when supplied in the form of glucose-1-phosphate.