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Ati nurs 4th sem dosage calculation exam ( 25 Questions)
Question 1 of 25 :
A nurse is providing discharge teaching to the parent of a child who is prescribed diphenhydramine 25 mg elixir every 4 hr as needed. The amount available is diphenhydramine elixir 12.5 mg/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 10
Calculation:
Desired dose = 25 mg.
Available concentration = 12.5 mg / 5 mL
= 2.5 mg/mL.
- Calculate the volume to administer in milliliters (mL).
Volume to administer (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 25 mg / 2.5 mg/mL
= 10 mL.
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