Enteral & parenteral nutrition calculations worksheet with answers

Free printable Enteral & parenteral nutrition calculations worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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1.Easy
1.5 kcal/mL1800 kcal/day? mL/h16 h/day

Practice exercise (made-up values, not clinical guidance). A patient needs 1800 kcal a day from a tube feed that provides 1.5 kcal/mL. The feed runs by pump for 16 hours a day. At what rate R do you set the pump, in mL/h? Round to the nearest whole number.

1800 kcal/day1.5 kcal/mL16 h
R = mL/h
2.Easy
1.5 kcal/mL63 g protein/L35 mL/h16 h/dayP = ? g/day

Practice exercise (made-up values, not clinical guidance). A tube feed with 63 g of protein per litre runs at 35 mL/h for 16 hours a day. How many grams of protein P does the patient receive per day? Round to one decimal place.

35 mL/h16 h/day63 g/L
P = g/day
3.Medium
68 g/L1.2 g/kg/day70 mL/h85 kg18 h/dayΔP = ? g

Practice exercise (made-up values, not clinical guidance). An 85 kg patient needs 1.2 g of protein per kg a day. The tube feed contains 68 g of protein per litre and runs at 70 mL/h for 18 hours a day. How many grams of extra protein ΔP a day are still needed? Round to one decimal place.

85 kg1.2 g/kg/day68 g/L70 mL/h · 18 h
ΔP = g/day
4.Medium
1.5 kcal/mL25 kcal/kg/day? mL/h74 kg20 h/day

Practice exercise (made-up values, not clinical guidance). A 74 kg adult (BMI below 30) needs 25 kcal/kg/day. The tube feed provides 1.5 kcal/mL and runs by pump for 20 hours a day. At what rate R do you set the pump, in mL/h? Round to the nearest whole number.

74 kg25 kcal/kg/day1.5 kcal/mL20 h
R = mL/h
5.Hard
107 kg175 cmmanBMI = kg/m²P = ? g/day

Practice exercise (made-up values, not clinical guidance). A critically ill man is 175 cm tall and weighs 107 kg. The practice protocol gives 2 g of protein per kg of ideal body weight (Devine) per day if the BMI is 30 to under 40 kg/m², and 2.5 g/kg of ideal body weight per day if the BMI is 40 kg/m² or more. Find the protein goal P in g/day. Round to the nearest whole number.

175 cm107 kgmanBMI 30–40: 2 g/kg IBWBMI ≥ 40: 2.5 g/kg IBW
P = g/day
6.Hard
24 hdextrose 25%1000 mLamino acids 6%1000 mLlipid 10%250 mL · 1.1 kcal/mLN = protein/6.25NPC : N = ? : 1

Practice exercise (made-up values, not clinical guidance). Over 24 hours a patient receives 1000 mL of parenteral nutrition with final concentrations of 25% dextrose and 6% amino acids, plus 250 mL of 10% lipid emulsion (1.1 kcal/mL). Find the non-protein kilocalorie to nitrogen ratio NPC : N (the number x in x : 1). Round to the nearest whole number.

1000 mLdextrose 25%amino acids 6%lipid 250 mL · 1.1 kcal/mL
NPC : N =

Answer key

  1. 1. R = 75 mL/h
  2. 2. P = 35.3 g/day
  3. 3. ΔP = 16.3 g/day
  4. 4. R = 62 mL/h
  5. 5. P = 141 g/day
  6. 6. NPC : N = 117

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