Drug Dosage Calculations Practice Exam
(Quiz 25 Questions and Correct Answers)
with Rationales
1. 1. Question
A home health nurse is caring for a 72-year-old patient with a history of
gastroesophageal reflux disease (GERD). The patient has been prescribed
magnesium hydroxide/aluminum hydroxide (Maalox) 30 mL PO to alleviate
symptoms. However, the patient does not have any calibrated medication
measuring devices at home. The nurse must instruct the patient on how to
measure the dose using ordinary household measuring devices accurately. How
will you instruct the patient to measure the dose using ordinary household
measuring devices?
Fill in the blanks. Record your answer to the nearest whole number.
Answer: BLANK 1 of 1 tbsp.
Answer: Fill in the blank 1 of 1 (2) tbsp.
Correct answer:
2 tbsp.
Computation
30mL×1tbsp15mL=2tbsp30mL×15mL1tbsp=2tbsp
, One tablespoon is equal to 15 mL.
Convert 30 mL to tablespoons by multiplying it by one tablespoon.
Then, divide 30 by 15 mL to get the final answer of 2 tbsp.
2. 2. Question
A 66-year-old patient with a history of deep vein thrombosis (DVT) is currently on
warfarin (Coumadin) therapy. The patient has a bottle of Warfarin (Coumadin) 5
mg tablets at home. After reviewing the patient’s most recent international
normalized ratio (INR) results, the healthcare provider calls the patient and
instructs them to adjust their daily dosage to 7.5 mg/day. The patient is unsure
about how to adjust their tablet intake to achieve the new dosage. As a nurse,
you are asked to guide the patient on the correct number of tablets they should
take. Considering the patient has scored tablets, how many tablets should the
patient take daily?
Fill in the blank and record your answer using one decimal place.
Answer: BLANK 1 of 1 tablet(s)
Answer: Fill in the blank 1 of 1 (1.5) tablet(s)
Correct answer
1.5 tablet
Formula
Desired(D)×Vehicle(V)On Hand(H)=amount to administerOn Hand(H)Desi
red(D)×Vehicle(V)=amount to administer
Computation
(Quiz 25 Questions and Correct Answers)
with Rationales
1. 1. Question
A home health nurse is caring for a 72-year-old patient with a history of
gastroesophageal reflux disease (GERD). The patient has been prescribed
magnesium hydroxide/aluminum hydroxide (Maalox) 30 mL PO to alleviate
symptoms. However, the patient does not have any calibrated medication
measuring devices at home. The nurse must instruct the patient on how to
measure the dose using ordinary household measuring devices accurately. How
will you instruct the patient to measure the dose using ordinary household
measuring devices?
Fill in the blanks. Record your answer to the nearest whole number.
Answer: BLANK 1 of 1 tbsp.
Answer: Fill in the blank 1 of 1 (2) tbsp.
Correct answer:
2 tbsp.
Computation
30mL×1tbsp15mL=2tbsp30mL×15mL1tbsp=2tbsp
, One tablespoon is equal to 15 mL.
Convert 30 mL to tablespoons by multiplying it by one tablespoon.
Then, divide 30 by 15 mL to get the final answer of 2 tbsp.
2. 2. Question
A 66-year-old patient with a history of deep vein thrombosis (DVT) is currently on
warfarin (Coumadin) therapy. The patient has a bottle of Warfarin (Coumadin) 5
mg tablets at home. After reviewing the patient’s most recent international
normalized ratio (INR) results, the healthcare provider calls the patient and
instructs them to adjust their daily dosage to 7.5 mg/day. The patient is unsure
about how to adjust their tablet intake to achieve the new dosage. As a nurse,
you are asked to guide the patient on the correct number of tablets they should
take. Considering the patient has scored tablets, how many tablets should the
patient take daily?
Fill in the blank and record your answer using one decimal place.
Answer: BLANK 1 of 1 tablet(s)
Answer: Fill in the blank 1 of 1 (1.5) tablet(s)
Correct answer
1.5 tablet
Formula
Desired(D)×Vehicle(V)On Hand(H)=amount to administerOn Hand(H)Desi
red(D)×Vehicle(V)=amount to administer
Computation
