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)
A nurse must administer acetaminophen 650 mg PO. The
tablets available are 325 mg each. 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:
Set up dimensional analysis.
650 mg ordered × (1 tablet / 325 mg)
Step 2:
650 ÷ 325 = 2 tablets
Step 3:
Administer 2 tablets.
Medication Safety Note:
Always verify that scored tablets may be split when partial
tablets are required.


Question 2 (Easy)

,A 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:
500 mg × (5 mL / 250 mg)
Step 2:
= (500 × 5) ÷ 250
= 10 mL
Step 3:
Administer 10 mL.
Medication Safety Note:
Use an oral syringe or medication cup for accurate
measurement.

, Question 3 (Easy)
A patient weighs 154 lb. What is the patient's weight in
kilograms?
A. 60 kg
B. 65 kg
C. 70 kg
D. 75 kg
Correct Answer: C. 70 kg
Rationale:
Step 1:
154 lb × (1 kg / 2.2 lb)
Step 2:
154 ÷ 2.2 = 70 kg
Step 3:
Document weight as 70 kg.
Medication Safety Note:
Weight-based medication orders should always use kilograms.


Question 4 (Easy)