True or false: Before calculating how much medication to give, the ordered dose and the dose on hand must be expressed in the same units.
2 Oral Medication Dosage Calculations Online Quiz Questions
Use this free practice quiz with 20 questions to review 2 Oral Medication Dosage Calculations, test your knowledge, and prepare for your next test or exam.
In the basic dosage relationship, multiply the ratio of ordered dose to dose on hand by the .
An oral liquid contains 250 mg in 5 mL. If the ordered dose is 125 mg, what volume should be calculated?
- A
1.25 mL
- B
2.5 mL
- C
5 mL
- D
10 mL
The order is 0.5 g, and each tablet contains 250 mg. How many tablets does the calculation give?
- A
0.5 tablets
- B
2 tablets
- C
2.5 tablets
- D
500 tablets
The order is 0.75 g, and each capsule contains 250 mg. How many capsules does the calculation give?
True or false: A capsule may be split to obtain a fractional capsule dose when the calculation results in less than one capsule.
- A
True
- B
False
Select all statements that follow safe decimal notation.
- A
Write 0.5 mL, not .5 mL.
- B
Write 5.0 mg to make the dose look more precise than 5 mg.
- C
Write 5 mg, not 5.0 mg, when the zero is unnecessary.
A liquid contains 120 mg in 5 mL. For an ordered dose of 180 mg, the calculated volume is mL.
A liquid contains 120 mg in 5 mL. For an order of 160 mg, calculate the volume and round the final answer to the nearest tenth of a milliliter.
Which tool is appropriate for measuring a prescribed volume of oral liquid?
- A
A suitably marked oral dosing device with mL markings
- B
A kitchen teaspoon
- C
An unmarked household cup
- D
A dinner spoon
Select all sound practices for rounding dosage calculations.
- A
Keep the full calculated result until the final answer is rounded.
- B
Always round every dose to the nearest whole number.
- C
Follow the rounding instructions in the problem or applicable policy.
- D
Round intermediate values to make the calculation easier.
An order is for 375 mg, and the available tablets contain 250 mg each. The product must not be split. What is the appropriate response?
- A
Give 1 tablet because fractional tablets are not permitted.
- B
Give 2 tablets to avoid splitting the product.
- C
Do not give this calculated amount with the stated product; obtain an appropriate formulation or clarify the order.
- D
Split the tablet because the arithmetic requires a fractional amount.
An oral liquid contains 30 mg/mL, and the ordered dose is 90 mg. Show the calculation, give the result with its unit, and explain why the result is a volume rather than a mass.
Which notation follows safe decimal-writing guidance for a dose of half a milliliter?
- A
.5 mL
- B
0.5 mL
- C
0.50 mL
- D
5 mL
A liquid dose is calculated using an order of 60 mg and a supply of 20 mg in 5 mL. What unit should the calculated amount to give use?
- A
mg
- B
mL
- C
tablets
- D
capsules
A calculated dose requires a fraction of a capsule. The capsule may be split to provide that fractional dose.
- A
True
- B
False
The order is 420 mg, and each tablet contains 140 mg. How many tablets does the calculation give?
- A
2 tablets
- B
3 tablets
- C
4 tablets
- D
0.3 tablets
The order is 72 mg, and the liquid contains 24 mg/mL. What volume should the calculation give? Enter your answer in milliliters.
Which is the appropriate choice for measuring an oral liquid dose?
- A
A suitable marked oral dosing device with metric markings
- B
A kitchen teaspoon
- C
An unmarked household spoon
- D
A household cup without volume markings
A calculation indicates that part of a tablet would be needed. What product-specific property must be confirmed before splitting it?