Dosage Calculations Made Easy: Solving Problems Using Dimensional Analysis, 8th Edition Test Bank | Chapter-by-Chapter Exam Prep

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




TEST BANK

,Question 1 (Easy)
A provider prescribes 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
Rationale:
Step 1: Set up dimensional analysis.
650 mg×1 tablet325 mg650\;mg \times
\frac{1\;tablet}{325\;mg}650mg×325mg1tablet
Step 2: Cancel mg.
=650325=2=\frac{650}{325}=2=325650=2
Step 3: Administer 2 tablets.
Medication Safety Note:
Always verify tablet strength before administration to avoid
underdosing or overdosing.


Question 2 (Easy)

,A prescription reads amoxicillin 500 mg PO. The suspension
available contains 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
Rationale:
Step 1:
500 mg×5 mL250
mg500\;mg\times\frac{5\;mL}{250\;mg}500mg×250mg5mL
Step 2:
=2500250=10 mL=\frac{2500}{250}=10\;mL=2502500=10mL
Step 3: Administer 10 mL.
Medication Safety Note:
Shake suspensions well and use an oral syringe for accurate
measurement.


Question 3 (Easy)

, Convert 1.5 grams to milligrams.
A. 15 mg
B. 150 mg
C. 1,500 mg
D. 15,000 mg
Correct Answer: C
Rationale:
Step 1:
1.5 g×1000 mg1
g1.5\;g\times\frac{1000\;mg}{1\;g}1.5g×1g1000mg
Step 2:
=1500 mg=1500\;mg=1500mg
Medication Safety Note:
Always convert units before calculating medication doses.


Question 4 (Easy)
A provider orders 0.25 mg digoxin PO. Available tablets contain
125 mcg each. How many tablets should the nurse administer?
A. ½ tablet
B. 1 tablet