EN and PN Calculations Worksheet/Mini Case
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Show your work for ALL calculations on every section. If you do not, points will be deducted.
Enteral Calculations: Part 1 (20 points): Complete the chart: for each of the following tube feeds, calculate the amount of kcals, protein, water, and fat provided daily.
Formula Feeding Water(ml) Energy (Kcals) Protein (g) Additional Free Water Needed to meet Designated Free Water Provision
Jevity 1.5
75 ml/hr x 18 hours
Free water needs of 2,025 ml
Glucerna 1.2
50ml/hr x 24 hours
Free water needs of 1440 ml
Pivot 1.5
40 ml/hr x 24 hours
Free water needs of 1440 ml
Osmolite 1.0
70ml/hr x 18 hours
Free water needs of 1260 ml
Nepro
6 cans daily
@ 237ml each
Free water needs of 1500 ml
.
Enteral Calculations: Part 2 (20 points)
Complete the chart: for each of the following tube feeds, calculate the amount of Na+, K+, Phos and Ca+ provided in 2000 kcal. **Hint – you need to first start by finding the volume of each formula needed to provide 2000 kcal.**
Na+(mg) K+(mg) Phos(mg) Ca(mg)
Jevity 1.5
Nepro
Suplena
Glucerna 1.5
Impact Peptide 1.5
Enteral Prescription (26 points)
A patient is 5’8″ tall and weighs 70kg. She needs 1890 kcal, 85g protein, and 1890 ml water daily. She is going to get Jevity 1.5 administered continuously over 24 hours via NGT.
Calculate the hourly rate of feeding to the nearest whole number (4 pt)
2.Determine total energy, protein and water provided by formula (6 pts)
3.Determine the total amount of additional water needed to meet her needs (6 pts)
4.Suggest a free water flush rate if provided 1.) hourly, 2.) every 3 hours, 3.) every 6 hours. Include all 3 answers. (10 points)
5.Convert the feeding to an 18-hour schedule: what is the hourly rate to the nearest whole number? (1 pt)
6. provide a complete enteral prescription for 18-hour administration of her tube feed at goal. Include any additional instructions you may have to ensure patient safety. (5 pts)
Parenteral Calculations
Calculate the total g of macronutrients and the calories provided by each. Indicate the total kcal provision of the solution.
(34 points total for all sections combined – 1 point per box)
Macronutrient Solution Volume g Kcal
Protein AA 10% 600 ml
CHO (dextrose) D70 300 ml
Lipid Lip 20% 375 ml
TOTAL
Macronutrient Solution Volume g Kcal
Protein AA 15% 400 ml
CHO (dextrose) D50 200 ml
Lipid Lip 10% 500 ml
TOTAL
2-in-one infusions with lipid piggyback (24 hour infusions)
22% dextrose, 9%AA @ 60 cc/hr with daily + 10% lipids piggyback @ 20 cc/hr
Note these concentrations are with respect to the total final formula
**First figure out how many ml of each component you’re going to have, based on how long the infusion is running. For example, if we said 15% dextrose, 8 %AA @ 40 cc/hr with daily + 10% lipids piggyback @ 25 cc/hr, we would first do 40 ml x 24 hrs = 960 ml of solution…from there you can figure out how many grams of protein will be provided if 8% of the solution is amino acids, and so on.**
Parenteral Prescription 1: macronutrients
A patient is 5’8″ tall and weighs 70kg. She needs 2000 kcal, 70g protein, and 2000 ml water daily. Configure a 3- in-one infusion using the following components, w/ a target macronutrient distribution of 14% protein, 56% carbohydrate, and 30% fat. You need to state the volume of each solution to be added to the IV bag.
Solution Volume (ml) kcal
AA 8%
Using a 1000 ml vial
Dextrose 70%
Using a 2000 ml vial
Lipid 20%
Using a 250 ml vial
Additional sterile water needed to be added to reach final goal volume. **Hint – final goal volume is equal to hydration needs.**
Total
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