Solving Problems Using Dimensional

DOSAGE CALCULATIONS MADE
EASY
SOLVING PROBLEMS USING
DIMENSIONAL ANALYSIS
8TH EDITION
• AUTHOR(S)GLORIA PEARL
CRAIG




TEST BANK

,Question 1 (Easy) – Oral Tablet Calculation
A patient is prescribed amoxicillin 500 mg orally. The pharmacy
supplies 250 mg tablets. How many tablets should the nurse
administer?
A. 1 tablet
B. 1.5 tablets
C. 2 tablets
D. 2.5 tablets
Correct Answer: C
Rationale:
Step 1:
Set up dimensional analysis:
500 mg × (1 tablet / 250 mg)
Step 2:
= 2 tablets
Step 3:
Administer 2 tablets.
Medication Safety Note:
Always verify tablet strength before administration to avoid
underdosing or overdosing.

,Question 2 (Easy) – Liquid Medication
A provider orders acetaminophen 650 mg orally. The available
suspension contains 325 mg per 10 mL. How many milliliters
should the nurse administer?
A. 10 mL
B. 15 mL
C. 20 mL
D. 25 mL
Correct Answer: C
Rationale:
Step 1:
650 mg × (10 mL / 325 mg)
Step 2:
= 20 mL
Step 3:
Administer 20 mL.
Medication Safety Note:
Use an oral dosing syringe or medicine cup for accurate liquid
measurement.

, Question 3 (Easy) – Metric Conversion
Convert 2.5 g to milligrams.
A. 25 mg
B. 250 mg
C. 2,500 mg
D. 25,000 mg
Correct Answer: C
Rationale:
Step 1:
1 g = 1,000 mg
Step 2:
2.5 g × (1,000 mg / 1 g)
= 2,500 mg
Step 3:
The correct conversion is 2,500 mg.
Medication Safety Note:
Incorrect unit conversions are a common source of medication
errors.


Question 4 (Easy) – Injectable Medication