Examples · Oral dose - liquid
Worked example
Oral dose - liquid - practice problem 7
The prescriber orders 480 mg of acetaminophen oral suspension. The bottle is labeled 160 mg per 5 mL.
Ordered dose480 mg
Concentration160 mg per 5 mL
How many milliliters should the nurse give?
Answer: 15 mL
Step-by-step solution
1. Identify what you have and what you want
Have: 160 mg per 5 mL · Want: 480 mg
2. Set up dimensional analysis so mg cancels
480 mg × ( 5 mL ÷ 160 mg )
3. Cancel mg and solve
= ( 480 × 5 ) ÷ 160 mL
= 15 mL
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