Math Calculations for Pharmacy Technicians: Medication and
Prescription Orders and Their Calculations - Practice Question
with verified answers
_______ are available as single and multidose, including those containing
powdered drugs for reconstitution; _______ are used to draw up medication from
an ampule due to the possibility of contaminating the medication with small
pieces of glass after breaking the ampule. Ans✓✓✓ Vials; filter needles
_______, such as heparin, are drugs that prolong the time it takes for a blood clot
to form. Ans✓✓✓ Anticoagulants
A doctor orders oral diphenhydramine once a day for a 70-lb. child. The dose is
0.3 mg/kg. What's the total daily amount to be given to the child? Ans✓✓✓ 9.54
mg
A doctor's order for atomoxetine is provided in grains. However, the stock
medication is as 25 mg tablets. What's the target measurement system for the
calculations? Ans✓✓✓ Metric system
A dose of 2.0 mg of Cogentin was ordered for IM injection daily. The medication
stock vial contains 4 mg of Cogentin. Can the dose volume be calculated with the
provided information? Ans✓✓✓ No, the volume containing the 4 mg is needed.
A medication vial containing 200 mg of cyclophosphamide for injection needs to
be prepared for a patient. The instructions on the vial say to add 10 mL of sterile
water and shake to dissolve the drug for single-dose use. What's the final drug
concentration? (Note: In this case, the difference between the final volume and
diluent volume is negligible.) Ans✓✓✓ 20 mg/mL
, A patient is to receive a subcutaneous parenteral dose of a medication at the
clinic. What's an appropriate upper limit volume for subcutaneous parenteral
doses? Ans✓✓✓ 1 mL to 2 mL
A patient needs to take 0.5 g po qam and 0.25 g po of a medication before
sleeping. How many 500 mg tablets must be dispensed for a 30-day supply?
Ans✓✓✓ 45 tablets
A prescription is sent to a pharmacy for a prednisone taper with the following
directions:Prednisone 10mg—take 4 tablets po qAM with breakfast for 3 days;
then take 3 tablets po qAM with breakfast for 3 days; then take 2 tablets po qAM
with breakfast for 3 days; then take 1 tablet po qAM for 3 days; then stop. How
many 10 mg prednisone tablets should this prescription be filled for? Ans✓✓✓
30
Before dispensing any drug, the pharmacist must evaluate the prescription or
medication for appropriateness, including which of the following? Select all that
apply. Ans✓✓✓ * Correct drug
* Correct route of administration
* Correct frequency
* Correct dosage form
Does 5 IU of epinephrine = 5 IU of ampicillin? Ans✓✓✓ No, because
measurement varies across different types of medications.
How many tablets of furosemide are needed to fill a prescription for 40 mg daily
po x 30 d with a stock medication available in 20-mg tablets? Ans✓✓✓ 60
Prescription Orders and Their Calculations - Practice Question
with verified answers
_______ are available as single and multidose, including those containing
powdered drugs for reconstitution; _______ are used to draw up medication from
an ampule due to the possibility of contaminating the medication with small
pieces of glass after breaking the ampule. Ans✓✓✓ Vials; filter needles
_______, such as heparin, are drugs that prolong the time it takes for a blood clot
to form. Ans✓✓✓ Anticoagulants
A doctor orders oral diphenhydramine once a day for a 70-lb. child. The dose is
0.3 mg/kg. What's the total daily amount to be given to the child? Ans✓✓✓ 9.54
mg
A doctor's order for atomoxetine is provided in grains. However, the stock
medication is as 25 mg tablets. What's the target measurement system for the
calculations? Ans✓✓✓ Metric system
A dose of 2.0 mg of Cogentin was ordered for IM injection daily. The medication
stock vial contains 4 mg of Cogentin. Can the dose volume be calculated with the
provided information? Ans✓✓✓ No, the volume containing the 4 mg is needed.
A medication vial containing 200 mg of cyclophosphamide for injection needs to
be prepared for a patient. The instructions on the vial say to add 10 mL of sterile
water and shake to dissolve the drug for single-dose use. What's the final drug
concentration? (Note: In this case, the difference between the final volume and
diluent volume is negligible.) Ans✓✓✓ 20 mg/mL
, A patient is to receive a subcutaneous parenteral dose of a medication at the
clinic. What's an appropriate upper limit volume for subcutaneous parenteral
doses? Ans✓✓✓ 1 mL to 2 mL
A patient needs to take 0.5 g po qam and 0.25 g po of a medication before
sleeping. How many 500 mg tablets must be dispensed for a 30-day supply?
Ans✓✓✓ 45 tablets
A prescription is sent to a pharmacy for a prednisone taper with the following
directions:Prednisone 10mg—take 4 tablets po qAM with breakfast for 3 days;
then take 3 tablets po qAM with breakfast for 3 days; then take 2 tablets po qAM
with breakfast for 3 days; then take 1 tablet po qAM for 3 days; then stop. How
many 10 mg prednisone tablets should this prescription be filled for? Ans✓✓✓
30
Before dispensing any drug, the pharmacist must evaluate the prescription or
medication for appropriateness, including which of the following? Select all that
apply. Ans✓✓✓ * Correct drug
* Correct route of administration
* Correct frequency
* Correct dosage form
Does 5 IU of epinephrine = 5 IU of ampicillin? Ans✓✓✓ No, because
measurement varies across different types of medications.
How many tablets of furosemide are needed to fill a prescription for 40 mg daily
po x 30 d with a stock medication available in 20-mg tablets? Ans✓✓✓ 60
