CSPT - Compounded Sterile Preparation Technician Sterile Compounding Calculations Questions and Answers 2

Question 1

A physician orders 1,000 mL of D5W with 20 mEq of potassium chloride to infuse at 125 mL/hr. How long will the infusion take?

Accepted Answer

8 hours

Answer

1,000 mL divided by 125 mL/hr equals 8 hours.

Question 2

How many milligrams of vancomycin are in 200 mL of a 5 mg/mL solution?

Accepted Answer

1,000 mg

Answer

5 mg/mL times 200 mL equals 1,000 mg.

Question 3

A 70-kg patient requires dopamine at 5 mcg/kg/min. The concentration is 400 mg in 250 mL D5W. What is the infusion rate?

Accepted Answer

13.1 mL/hr

Answer

Dose is 350 mcg/min. Concentration is 1,600 mcg/mL. Rate equals 350 divided by 1,600 times 60 equals 13.1 mL/hr.

Question 4

What is the final concentration in percent (w/v) of 5 g of dextrose in 100 mL?

Accepted Answer

5%

Answer

Percent w/v equals grams per 100 mL, so 5 g per 100 mL equals 5%.

Question 5

Ampicillin 500 mg IV every 6 hours for 24 hours. How many total milligrams are needed?

Accepted Answer

2,000 mg

Answer

24 hours divided by 6 hours equals 4 doses. 500 mg times 4 equals 2,000 mg.

CSPT - Compounded Sterile Preparation Technician Practice Test