CALCULATION OF DRUG
DOSAGES: A WORK TEXT
12TH EDITION
AUTHOR(S)SHEILA J. OGDEN;
LINDA FLUHARTY
TEST BANK
1) Reference
Fractions — Simplifying a medication fraction
Clinical Stem
A nurse is preparing an oral medication order that is written as
4/8 tablet. The pharmacy label shows the tablet may be safely
,split. Before administration, the nurse simplifies the fraction to
confirm the dose amount. What is the simplified fraction?
Options
A. 1/2 tablet
B. 2/4 tablet
C. 4/6 tablet
D. 1/4 tablet
Correct Answer
A. 1/2 tablet
Rationale
Correct Answer: 4/8 reduces to 1/2 by dividing the
numerator and denominator by 4. This helps the nurse verify
the ordered dose accurately before administration.
B: 2/4 is equivalent to 1/2, but it is not the simplified form.
C: 4/6 does not equal 4/8 and would change the dose.
D: 1/4 is too small and would underdose the patient.
Teaching Point
Simplify fractions first to verify the ordered dose correctly.
Citation
Ogden, S. J., & Fluharty, L. (n.d.). Calculation of Drug Dosages:
A Work Text. Chapter 1: Fractions.
,2) Reference
Fractions — Identifying an equivalent dose fraction
Clinical Stem
A pediatric patient is prescribed 1/2 dose of a medication. The
nurse checks the dose against a preparation chart that lists
several fraction equivalents. Which fraction is equivalent to
1/2?
Options
A. 2/4
B. 1/3
C. 2/3
D. 3/8
Correct Answer
A. 2/4
Rationale
Correct Answer: 2/4 is equivalent to 1/2 because both
simplify to the same value. Equivalent fractions represent the
same dose amount.
B: 1/3 is smaller than 1/2 and would not match the
ordered dose.
C: 2/3 is larger than 1/2 and would be unsafe if given as a
, substitute.
D: 3/8 is less than 1/2 and is not equivalent.
Teaching Point
Equivalent fractions represent the same dose, even when
written differently.
Citation
Ogden, S. J., & Fluharty, L. (n.d.). Calculation of Drug Dosages:
A Work Text. Chapter 1: Fractions.
3) Reference
Fractions — Adding fractions in a dose schedule
Clinical Stem
A nurse is reviewing a liquid medication schedule that requires
the patient to take 1/4 mL in the morning and 1/4 mL at night.
What is the total daily dose?
Options
A. 1/2 mL
B. 1/4 mL
C. 2/8 mL
D. 1 mL
DOSAGES: A WORK TEXT
12TH EDITION
AUTHOR(S)SHEILA J. OGDEN;
LINDA FLUHARTY
TEST BANK
1) Reference
Fractions — Simplifying a medication fraction
Clinical Stem
A nurse is preparing an oral medication order that is written as
4/8 tablet. The pharmacy label shows the tablet may be safely
,split. Before administration, the nurse simplifies the fraction to
confirm the dose amount. What is the simplified fraction?
Options
A. 1/2 tablet
B. 2/4 tablet
C. 4/6 tablet
D. 1/4 tablet
Correct Answer
A. 1/2 tablet
Rationale
Correct Answer: 4/8 reduces to 1/2 by dividing the
numerator and denominator by 4. This helps the nurse verify
the ordered dose accurately before administration.
B: 2/4 is equivalent to 1/2, but it is not the simplified form.
C: 4/6 does not equal 4/8 and would change the dose.
D: 1/4 is too small and would underdose the patient.
Teaching Point
Simplify fractions first to verify the ordered dose correctly.
Citation
Ogden, S. J., & Fluharty, L. (n.d.). Calculation of Drug Dosages:
A Work Text. Chapter 1: Fractions.
,2) Reference
Fractions — Identifying an equivalent dose fraction
Clinical Stem
A pediatric patient is prescribed 1/2 dose of a medication. The
nurse checks the dose against a preparation chart that lists
several fraction equivalents. Which fraction is equivalent to
1/2?
Options
A. 2/4
B. 1/3
C. 2/3
D. 3/8
Correct Answer
A. 2/4
Rationale
Correct Answer: 2/4 is equivalent to 1/2 because both
simplify to the same value. Equivalent fractions represent the
same dose amount.
B: 1/3 is smaller than 1/2 and would not match the
ordered dose.
C: 2/3 is larger than 1/2 and would be unsafe if given as a
, substitute.
D: 3/8 is less than 1/2 and is not equivalent.
Teaching Point
Equivalent fractions represent the same dose, even when
written differently.
Citation
Ogden, S. J., & Fluharty, L. (n.d.). Calculation of Drug Dosages:
A Work Text. Chapter 1: Fractions.
3) Reference
Fractions — Adding fractions in a dose schedule
Clinical Stem
A nurse is reviewing a liquid medication schedule that requires
the patient to take 1/4 mL in the morning and 1/4 mL at night.
What is the total daily dose?
Options
A. 1/2 mL
B. 1/4 mL
C. 2/8 mL
D. 1 mL
