DOSAGE CALCULATIONS MADE
EASY
SOLVING PROBLEMS USING
DIMENSIONAL ANALYSIS
8TH EDITION
• AUTHOR(S)GLORIA PEARL
CRAIG
TEST BANK
,Question 1 (Easy)
A provider prescribes amoxicillin 500 mg PO. The medication
available is 250 mg capsules. How many capsules should the
nurse administer?
A. 1 capsule
B. 2 capsules
C. 3 capsules
D. 4 capsules
Correct Answer: B
Rationale:
Step 1: Set up dimensional analysis.
500 mg×1 capsule250 mg500\ \text{mg} \times \frac{1\
\text{capsule}}{250\ \text{mg}}500 mg×250 mg1 capsule
Step 2: Cancel mg.
=500250=2 capsules=\frac{500}{250}=2\
\text{capsules}=250500=2 capsules
Step 3: Administer 2 capsules.
Medication Safety Note: Always verify the tablet/capsule
strength before administration to avoid underdosing or
overdosing.
,Question 2 (Easy)
A patient is prescribed 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:
650 mg×1 tablet325 mg650\ \text{mg}\times\frac{1\
\text{tablet}}{325\ \text{mg}}650 mg×325 mg1 tablet
Step 2:
=650325=2=\frac{650}{325}=2=325650=2
Step 3: Administer 2 tablets.
Medication Safety Note: Confirm the total prescribed dose
before splitting or combining tablets.
, Question 3 (Easy)
A medication order reads 30 mL of cough syrup. Using
household equivalents, this volume equals:
A. 1 teaspoon
B. 2 teaspoons
C. 1 tablespoon
D. 2 tablespoons
Correct Answer: D
Rationale:
Step 1: Recall:
• 1 teaspoon = 5 mL
• 1 tablespoon = 15 mL
Step 2:
30 mL×1 tbsp15 mL=2 tbsp30\ \text{mL}\times\frac{1\
\text{tbsp}}{15\ \text{mL}}=2\ \text{tbsp}30 mL×15 mL1 tbsp
=2 tbsp
Medication Safety Note: Use metric measuring devices
whenever possible for medication administration.
Question 4 (Easy)
EASY
SOLVING PROBLEMS USING
DIMENSIONAL ANALYSIS
8TH EDITION
• AUTHOR(S)GLORIA PEARL
CRAIG
TEST BANK
,Question 1 (Easy)
A provider prescribes amoxicillin 500 mg PO. The medication
available is 250 mg capsules. How many capsules should the
nurse administer?
A. 1 capsule
B. 2 capsules
C. 3 capsules
D. 4 capsules
Correct Answer: B
Rationale:
Step 1: Set up dimensional analysis.
500 mg×1 capsule250 mg500\ \text{mg} \times \frac{1\
\text{capsule}}{250\ \text{mg}}500 mg×250 mg1 capsule
Step 2: Cancel mg.
=500250=2 capsules=\frac{500}{250}=2\
\text{capsules}=250500=2 capsules
Step 3: Administer 2 capsules.
Medication Safety Note: Always verify the tablet/capsule
strength before administration to avoid underdosing or
overdosing.
,Question 2 (Easy)
A patient is prescribed 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:
650 mg×1 tablet325 mg650\ \text{mg}\times\frac{1\
\text{tablet}}{325\ \text{mg}}650 mg×325 mg1 tablet
Step 2:
=650325=2=\frac{650}{325}=2=325650=2
Step 3: Administer 2 tablets.
Medication Safety Note: Confirm the total prescribed dose
before splitting or combining tablets.
, Question 3 (Easy)
A medication order reads 30 mL of cough syrup. Using
household equivalents, this volume equals:
A. 1 teaspoon
B. 2 teaspoons
C. 1 tablespoon
D. 2 tablespoons
Correct Answer: D
Rationale:
Step 1: Recall:
• 1 teaspoon = 5 mL
• 1 tablespoon = 15 mL
Step 2:
30 mL×1 tbsp15 mL=2 tbsp30\ \text{mL}\times\frac{1\
\text{tbsp}}{15\ \text{mL}}=2\ \text{tbsp}30 mL×15 mL1 tbsp
=2 tbsp
Medication Safety Note: Use metric measuring devices
whenever possible for medication administration.
Question 4 (Easy)
