A total parenteral nutrition (TPN) order calls for 500 mL of 10% Travasol, 250 mL of 50% dextrose in 250 mL of sterile water. What is the final concentration of the Travasol?
A) 0.5%
B) 3%
C) 5%
D) 8%

Question

Quizplus · Accepted Answer

The final concentration of Travasol is calculated by dividing the volume of Travasol by the total volume of the solution. The total volume of the solution is 500 mL (Travasol) + 250 mL (dextrose) + 250 mL (water) = 1000 mL. The concentration of Travasol is (500 mL / 1000 mL) * 100 = 50%, not its dilution in the final mixture. The question seems to be aiming at understanding the dilution effect, but the calculation provided directly calculates the percentage of the volume of Travasol in the total solution, which would be 50% based on the volumes given. However, given the options and the typical approach to such questions, there seems to be a misunderstanding in the interpretation. The correct approach to find the "final concentration" in the context of such questions usually involves calculating how the components contribute to the overall nutritional or chemical concentration, not just their volume ratios. Without specific details on how Travasol's concentration changes with dilution in this context, the direct volume ratio calculation doesn't accurately reflect a change in nutritional concentration. The question as stated doesn't provide a clear path to any of the given answer choices based on standard calculations for dilution or concentration adjustments.

A Total Parenteral Nutrition (TPN) Order Calls for 500 ML