The prescription is 0.0375 mg by injection. The ampoule is labelled 50 micrograms per mL. What volume V do you draw up?
Dosage calculations worksheet with answers
1.Easy
0.0375 mg50 mcg/mL
V = mL
2.Easy
The prescription is 100 mg. The stock solution contains 200 mg in 5 mL. What volume V do you draw up?
100 mg200 mg/5 mL
V = mL
3.Medium
A patient weighs 30 kg. The prescribed dose is 20 mg/kg per day, given in 4 equal doses. How many milligrams D are given per dose?
30 kg20 mg/kg/day4× per day
D = mg
4.Medium
A patient weighing 119 kg has a body surface area of 2.11 m². The prescription is 175 mg/m². Find the dose D in mg.
119 kgBSA = 2.11 m²175 mg/m²
D = mg
5.Hard
An infusion contains 25000 units of a drug in 250 mL. The prescription is 800 units per hour. At what rate R do you set the pump, in mL/h?
25000 units/250 mL800 units/h
R = mL/h
6.Hard
An infusion contains 20000 units of a drug in 250 mL. The prescription is 1500 units per hour. At what rate R do you set the pump, in mL/h?
20000 units/250 mL1500 units/h
R = mL/h
Answer key
- 1. V = 0.75 mL
- 2. V = 2.5 mL
- 3. D = 150 mg
- 4. D = 369.3 mg
- 5. R = 8 mL/h
- 6. R = 18.75 mL/h
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