The prescription is 20 mg. The stock solution contains 10 mg in 1 mL. What volume V do you draw up?
Dosage calculations worksheet with answers
1.Easy
20 mg10 mg/1 mL
V = mL
2.Easy
The prescription is 155 mg. The stock solution contains 250 mg in 5 mL. Draw up the dose in the syringe: what volume V do you give?
155 mg250 mg/5 mL
V = mL
3.Medium
A child weighing 14 kg is prescribed 3 mg/kg of a drug. The stock solution contains 10 mg/mL. Draw up the dose: what volume V do you give?
14 kg3 mg/kg10 mg/mL
V = mL
4.Medium
A patient weighing 41 kg has a body surface area of 1.27 m². The prescription is 375 mg/m². Find the dose D in mg.
41 kgBSA = 1.27 m²375 mg/m²
D = mg
5.Hard
A patient is 109 cm tall and weighs 23 kg. The prescription is 60 mg/m². Using the Mosteller formula BSA = √(height (cm) × weight (kg)/3600), find the dose D in mg.
109 cm23 kg60 mg/m²
D = mg
6.Hard
The prescription is 220 units of a drug that comes as 1000 units/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?
220 units1000 units/mL
V = mL
Answer key
- 1. V = 2 mL
- 2. V = 3.1 mL
- 3. V = 4.2 mL
- 4. D = 476.3 mg
- 5. D = 50.07 mg
- 6. V = 0.22 mL
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