Solving Problems Using Dimensional

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




TEST BANK

,Creating all 20 questions with full answer choices, complete
dimensional-analysis solutions, and medication safety notes
would exceed the maximum response length I can send in a
single message.
I'll begin with Questions 1–5 below and continue with the
remaining questions in subsequent parts until all 20 are
complete.


Question 1 (Easy – Dimensional Analysis Fundamentals)
A provider orders acetaminophen 650 mg PO. The medication
available is 325 mg tablets.
How many tablets should the nurse administer?
A. 1 tablet
B. 1.5 tablets
C. 2 tablets
D. 3 tablets
Correct Answer: C. 2 tablets
Rationale:
Step 1: Identify the ordered dose.
Ordered = 650 mg
Available = 325 mg/tablet

,Step 2: Set up dimensional analysis.
[
650\ \text{mg}\times\frac{1\ \text{tablet}}{325\ \text{mg}}
]
The mg units cancel.
[
=\frac{650}{325}=2\ \text{tablets}
]
Step 3: Verify.
2 tablets × 325 mg = 650 mg.
Medication Safety Note:
Always verify the tablet strength before administration. Similar
medications may be stocked in multiple strengths.


Question 2 (Easy – Oral Liquid Calculation)
The provider prescribes amoxicillin 500 mg PO.
The suspension available is 250 mg per 5 mL.
How many milliliters should the nurse administer?
A. 5 mL
B. 7.5 mL

, C. 10 mL
D. 15 mL
Correct Answer: C. 10 mL
Rationale:
Step 1: Identify known values.
Ordered = 500 mg
Available = 250 mg/5 mL
Step 2: Dimensional analysis.
[
500\ \text{mg}\times\frac{5\ \text{mL}}{250\ \text{mg}}
]
mg cancels.
[
=\frac{2500}{250}=10\ \text{mL}
]
Step 3: Verify.
10 mL contains 500 mg.
Medication Safety Note:
Shake oral suspensions well before measuring the dose with an
oral syringe or medication cup.