CSPT CSPT - Compounded Sterile Preparation Technician Parenteral Nutrition and IV Admixture Preparation Questions and Answers 1 — Questions and Answers
Question 1: Which macronutrient in total parenteral nutrition (TPN) is the PRIMARY energy source and contributes 3.4 kcal per gram?
- Amino acids
- Dextrose (Correct answer)
- Lipid emulsion
- Electrolytes
Correct answer: Dextrose
Dextrose (glucose) in parenteral nutrition provides 3.4 kcal/g and is the primary carbohydrate energy substrate.
Question 2: What is the caloric density of a standard 20% lipid emulsion used in parenteral nutrition?
- 1.1 kcal/mL
- 2.0 kcal/mL (Correct answer)
- 3.4 kcal/mL
- 4.0 kcal/mL
Correct answer: 2.0 kcal/mL
A 20% lipid emulsion provides 2.0 kcal/mL, making it a calorie-dense component of TPN formulations.
Question 3: Which of the following electrolytes must be separated from calcium in TPN admixtures to avoid precipitation?
- Sodium chloride
- Potassium chloride
- Phosphate (Correct answer)
- Magnesium sulfate
Correct answer: Phosphate
Calcium and phosphate can form calcium phosphate precipitate, a dangerous incompatibility in TPN admixtures.
Question 4: What type of filter is recommended when administering a total parenteral nutrition solution that does NOT contain lipid emulsion?
- 0.22-micron filter (Correct answer)
- 1.2-micron filter
- 5-micron filter
- No filter required
Correct answer: 0.22-micron filter
A 0.22-micron filter is used for lipid-free TPN to remove particulates and microorganisms during administration.
Question 5: Which filter pore size is appropriate for administering a total nutrient admixture (3-in-1 TPN containing lipids)?
- 0.22 micron
- 0.45 micron
- 1.2 micron (Correct answer)
- 5 micron
Correct answer: 1.2 micron
A 1.2-micron filter is used for 3-in-1 TPN to allow lipid droplets to pass through while removing larger particulates.
Question 6: What is the recommended order of addition when compounding a TPN admixture to minimize calcium-phosphate precipitation?
- Phosphate last, calcium first
- Calcium last, phosphate first (Correct answer)
- Add both simultaneously
- Order does not matter
Correct answer: Calcium last, phosphate first
Phosphate should be added first and diluted well before calcium is added last, minimizing localized precipitation risk.
CSPT CSPT - Compounded Sterile Preparation Technician Parenteral Nutrition and IV Admixture Preparation Questions and Answers 1
Which macronutrient in total parenteral nutrition (TPN) is the PRIMARY energy source and contributes 3.4 kcal per gram?