The prescription is 112 mg. The stock solution contains 40 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?
Dosage calculations worksheet with answers
1.Easy
112 mg40 mg/1 mL
V = mL
2.Easy
The prescription is 75 mg. The stock solution contains 100 mg in 5 mL. What volume V do you draw up?
75 mg100 mg/5 mL
V = mL
3.Medium
A vial contains 500 mg of powder. The label says: add 9.6 mL of water for injection to give a total volume of 10 mL. The prescription is 75 mg. What volume V of the reconstituted solution do you give?
500 mg+ 9.6 mL → 10 mL75 mg
V = mL
4.Medium
A patient weighs 12 kg and is prescribed 25 mg/kg as a single dose. Find the dose D in mg.
12 kg25 mg/kg
D = mg
5.Hard
A child weighing 16 kg is prescribed 15 mg/kg per dose of an oral suspension that contains 250 mg in 5 mL. What volume V do you give?
16 kg15 mg/kg250 mg/5 mL
V = mL
6.Hard
A child weighing 12 kg is prescribed 15 mg/kg per dose of an oral suspension that contains 200 mg in 5 mL. What volume V do you give?
12 kg15 mg/kg200 mg/5 mL
V = mL
Answer key
- 1. V = 2.8 mL
- 2. V = 3.75 mL
- 3. V = 1.5 mL
- 4. D = 300 mg
- 5. V = 4.8 mL
- 6. V = 4.5 mL
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