Calculations
Author(s): Prince Shelly J
Issue: Mar/Apr 2000 - Compounding for Diabetes Patients
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Page(s): 145
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Abstract: The reader is shown how to perform calculations to solve seven problems. The first shows how to calculate the concentration of the normal fasting blood-glucose level into millimoles per liter. The second involves a dose of an oral glucose challenge for a pediatric patient and shows how to calculate how much Tru-Glu containing 10 g of glucose/oz should be administered to a child of a specific weight. The third shows how to calculate the quantity of Glutose gel containing dextrose 40% w/w that should be administered for a dose for a hypoglycemic patient. The fourth shows how to calculate the quantity of sucrose that could be used to provide the dose of glucose in the preceding problem. The fifth involves a total parenteral nutrition solution for a patient with diabetes who is a specified height and weight. The reader is shown how to calculate, using the Harris-Benedict Equation, the number of calories that the patient will need per day; the quantity of protein that the patient should receive and the quantity of a 7% amino acid solution needed to supply this amount of protein; and the quantity of 50% dextrose solution and 10% lipid emulsion the patient should receive. The sixth involves an error, when a patient with diabetes received the wrong intravenous solution (D5NS instead of normal saline). The reader is shown how to calculate the amount of dextrose the patient received, given a specified time when the solution was started. The seventh involves a total parenteral nutrition solution and amounts of solution lost due to adsorption to the polyvinyl chloride. The reader is shown how to calculate the amount of insulin the patient receives per day if a specified amount is placed in a 1-L bag running at a certain rate.