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divide the total grams of protein by 6.25 to find out gm of nitrogen. Calculate the total number of non protein calorie. Divide the total # of NPC by gm of nitrogen will bw the answer.

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Q: How do you calculate non-protein calories to nitrogen ratio?
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What is the nonprotein calorie to nitrogen ratio of a patient receiving TPN consisting of the following parentral nutrition solution 500ml 30 dextrose 500ml 20lipid 500ml 8.5 amino acid?

To calculate the nonprotein calorie to nitrogen ratio of the TPN solution, first determine the nonprotein calories by adding the total calories from dextrose and lipid. Next, calculate the total grams of nitrogen from the amino acids. Divide the nonprotein calories by the grams of nitrogen to get the ratio. In this case, you would calculate (500ml x 3.4 kcal) + (500ml x 2 kcal) = total nonprotein calories. Then, calculate 500ml x 8.5g = total grams of nitrogen. Finally, divide the total nonprotein calories by the total grams of nitrogen to get the ratio.


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