DOSAGE CALCULATION
PRACTICE EXAM 1
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This Exam contains: Dosage Calculation Practice
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, Question 1
A patient has an order for Chloromycetin, 500 mg every 6 hours. The drug comes in 250 mg capsules. What would the
nurse administer?
Correct Answer
2 tabs
Rationale:
To determine the correct dosage, the nurse needs to divide the ordered 500 mg by the available 250 mg capsules, resulting in 2
capsules per dose. The nurse will administer 2 capsules, which corresponds to 2 tabs, to meet the prescribed 500 mg every 6 hours.
Question 2
A nurse is to administer 150 mg of a drug intramuscularly. The label on the multidose vials reads 100 mg/mL. How
much would the nurse give?
Correct Answer
1.5 mL
Rationale:
To find the correct volume of the drug, the nurse must divide the total amount of the drug needed (150 mg) by the concentration of
the drug in the vial (100 mg/mL), which will provide the volume in milliliters. This calculation (150 mg / 100 mg/mL) results in 1.5 mL,
indicating that the nurse needs to administer 1.5 mL of the drug to administer the required 150 mg.
Question 3
A nurse is to administer 30 mg of furosemide (Lasix) to a client with congestive heart failure (CHF). The vial contains
40 mg/mL. Which is the correct dose to administer?
Correct Answer
0.75 mL
Rationale:
To determine the correct dose, the nurse needs to calculate the volume required to administer 30 mg of furosemide from a vial
containing 40 mg/mL by dividing 30 mg by 40 mg/mL, which results in 0.75 mL. This calculation ensures that the correct amount of
medication is administered by using the correct volume from the vial, thereby aligning with the prescribed dose of 30 mg.
Question 4
The nurse is providing discharge teaching for a client who has been prescribed 600 mg of an oral liquid medication.
The mother shows the nurse the label of the medication, which reads: 250 mg/mL. The nurse would instruct the
mother to give how many milliliters?
Correct Answer
2.4 mL
Rationale:
To find the correct dosage, the nurse must divide the prescribed amount (600 mg) by the concentration of the medication (250
mg/mL), which will yield the volume of medication needed in milliliters, resulting in the calculation 600 mg / 250 mg/mL = 2.4 mL.
This calculation is based on the key concept of converting a specific dose to its corresponding volume by dividing the prescribed dose
by the concentration of the medication.
Trusted by thousands of students and professionals worldwide Page 2 of 7
PRACTICE EXAM 1
20+ (Fully Updated 2026) Exam
Questions + Verified & Rationalized
Answers | A+ Graded
100% Guarantee Pass
This Exam contains: Dosage Calculation Practice
✓ Exam 1
✓ 100% Accurate Questions and Answers
✓ 100% Guarantee Pass - Verified by Experts
✓ Each Question Includes The Correct Answer
✓ Expert-Verified
Trusted by thousands of students and professionals worldwide Page 1 of 7
, Question 1
A patient has an order for Chloromycetin, 500 mg every 6 hours. The drug comes in 250 mg capsules. What would the
nurse administer?
Correct Answer
2 tabs
Rationale:
To determine the correct dosage, the nurse needs to divide the ordered 500 mg by the available 250 mg capsules, resulting in 2
capsules per dose. The nurse will administer 2 capsules, which corresponds to 2 tabs, to meet the prescribed 500 mg every 6 hours.
Question 2
A nurse is to administer 150 mg of a drug intramuscularly. The label on the multidose vials reads 100 mg/mL. How
much would the nurse give?
Correct Answer
1.5 mL
Rationale:
To find the correct volume of the drug, the nurse must divide the total amount of the drug needed (150 mg) by the concentration of
the drug in the vial (100 mg/mL), which will provide the volume in milliliters. This calculation (150 mg / 100 mg/mL) results in 1.5 mL,
indicating that the nurse needs to administer 1.5 mL of the drug to administer the required 150 mg.
Question 3
A nurse is to administer 30 mg of furosemide (Lasix) to a client with congestive heart failure (CHF). The vial contains
40 mg/mL. Which is the correct dose to administer?
Correct Answer
0.75 mL
Rationale:
To determine the correct dose, the nurse needs to calculate the volume required to administer 30 mg of furosemide from a vial
containing 40 mg/mL by dividing 30 mg by 40 mg/mL, which results in 0.75 mL. This calculation ensures that the correct amount of
medication is administered by using the correct volume from the vial, thereby aligning with the prescribed dose of 30 mg.
Question 4
The nurse is providing discharge teaching for a client who has been prescribed 600 mg of an oral liquid medication.
The mother shows the nurse the label of the medication, which reads: 250 mg/mL. The nurse would instruct the
mother to give how many milliliters?
Correct Answer
2.4 mL
Rationale:
To find the correct dosage, the nurse must divide the prescribed amount (600 mg) by the concentration of the medication (250
mg/mL), which will yield the volume of medication needed in milliliters, resulting in the calculation 600 mg / 250 mg/mL = 2.4 mL.
This calculation is based on the key concept of converting a specific dose to its corresponding volume by dividing the prescribed dose
by the concentration of the medication.
Trusted by thousands of students and professionals worldwide Page 2 of 7
