DOSAGE CALCULATIONS MADE
EASY
SOLVING PROBLEMS USING
DIMENSIONAL ANALYSIS
8TH EDITION
• AUTHOR(S)GLORIA PEARL
CRAIG
TEST BANK
,Question 1
Topic: Dimensional Analysis Fundamentals
A nurse is preparing to administer metoprolol 25 mg orally. The
medication is available as 50 mg tablets. How many tablets will
the nurse administer?
A. 0.25 tablet
B. 0.5 tablet
C. 1 tablet
D. 2 tablets
Correct Answer: B. 0.5 tablet
Rationale:
Step 1: Identify the desired dose (25 mg) and the available dose
(50 mg/tablet).
Step 2: Dimensional analysis setup:
text
25 mg × 1 tablet / 50 mg
Step 3: Cancel units (mg), multiply: 25/50 = 0.5 tablet
Medication Safety Note: Always verify that the calculated dose
is reasonable and within the prescribed range. Double-check
that the tablet can be safely split if required. Some medications
,should not be crushed or split; verify the formulation before
administration.
Question 2
Topic: Oral Dosage Calculations
The healthcare provider orders amoxicillin 0.75 g orally. The
medication is available as 250 mg tablets. How many tablets will
the nurse administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: C. 3 tablets
Rationale:
Step 1: Convert grams to milligrams: 0.75 g × 1000 mg/g = 750
mg
Step 2: Dimensional analysis setup:
text
750 mg × 1 tablet / 250 mg
Step 3: Cancel units (mg), divide: 750/250 = 3 tablets
Medication Safety Note: Always convert units to the same
system before calculating. Gram-to-milligram conversion (1 g =
, 1000 mg) is essential for safe medication administration. Verify
that the total number of tablets is appropriate and does not
exceed recommended single-dose limits.
Question 3
Topic: Unit Conversions
A nurse is calculating a patient's intake. The patient drank 8
ounces of water, 4 ounces of juice, and 6 ounces of milk. What
is the total intake in milliliters?
A. 180 mL
B. 360 mL
C. 540 mL
D. 720 mL
Correct Answer: C. 540 mL
Rationale:
Step 1: Calculate total fluid ounces: 8 + 4 + 6 = 18 ounces
Step 2: Apply conversion factor: 1 ounce = 30 mL
Step 3: Dimensional analysis setup:
text
18 oz × 30 mL / 1 oz = 540 mL
Medication Safety Note: Accurate intake and output
measurement is crucial for fluid balance assessment. The
EASY
SOLVING PROBLEMS USING
DIMENSIONAL ANALYSIS
8TH EDITION
• AUTHOR(S)GLORIA PEARL
CRAIG
TEST BANK
,Question 1
Topic: Dimensional Analysis Fundamentals
A nurse is preparing to administer metoprolol 25 mg orally. The
medication is available as 50 mg tablets. How many tablets will
the nurse administer?
A. 0.25 tablet
B. 0.5 tablet
C. 1 tablet
D. 2 tablets
Correct Answer: B. 0.5 tablet
Rationale:
Step 1: Identify the desired dose (25 mg) and the available dose
(50 mg/tablet).
Step 2: Dimensional analysis setup:
text
25 mg × 1 tablet / 50 mg
Step 3: Cancel units (mg), multiply: 25/50 = 0.5 tablet
Medication Safety Note: Always verify that the calculated dose
is reasonable and within the prescribed range. Double-check
that the tablet can be safely split if required. Some medications
,should not be crushed or split; verify the formulation before
administration.
Question 2
Topic: Oral Dosage Calculations
The healthcare provider orders amoxicillin 0.75 g orally. The
medication is available as 250 mg tablets. How many tablets will
the nurse administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: C. 3 tablets
Rationale:
Step 1: Convert grams to milligrams: 0.75 g × 1000 mg/g = 750
mg
Step 2: Dimensional analysis setup:
text
750 mg × 1 tablet / 250 mg
Step 3: Cancel units (mg), divide: 750/250 = 3 tablets
Medication Safety Note: Always convert units to the same
system before calculating. Gram-to-milligram conversion (1 g =
, 1000 mg) is essential for safe medication administration. Verify
that the total number of tablets is appropriate and does not
exceed recommended single-dose limits.
Question 3
Topic: Unit Conversions
A nurse is calculating a patient's intake. The patient drank 8
ounces of water, 4 ounces of juice, and 6 ounces of milk. What
is the total intake in milliliters?
A. 180 mL
B. 360 mL
C. 540 mL
D. 720 mL
Correct Answer: C. 540 mL
Rationale:
Step 1: Calculate total fluid ounces: 8 + 4 + 6 = 18 ounces
Step 2: Apply conversion factor: 1 ounce = 30 mL
Step 3: Dimensional analysis setup:
text
18 oz × 30 mL / 1 oz = 540 mL
Medication Safety Note: Accurate intake and output
measurement is crucial for fluid balance assessment. The
