Deck 18: Performing, Dispensing, and Compounding Calculations

Question 1

Which of the following pieces of information is not necessary to calculate the amount of medication to be dispensed?

A) days' supply needed
B) physician's name
C) number of doses per day
D) amount of a single dose

Answer 1

physician's name

Question 2

For which of the following medications might a pharmacist dispense more medication than is called for in a prescription?

A) Humalog 100 units per mL
B) Lexapro 20 mg tablets
C) Zemplar 2 mcg capsules
D) Synthroid 0.1 mg tablets

Answer 2

Humalog 100 units per mL

Question 3

Ordered: Cephalexin 500 mg po 3 times a day for 10 days
On hand: Cephalexin 500 mg capsules
How many capsules should be dispensed?

A) 10 capsules
B) 20 capsules
C) 30 capsules
D) 40 capsules

Answer 3

30 capsules

Question 4

Ordered: Furosemide 60 mg po daily for 90 days
On hand: Furosemide 40 mg/5 mL oral solution
What is the amount to dispense?

A) 200 mL
B) 300 mL
C) 450 mL
D) 675 mL

Question 5

Ordered: Amoxicillin 300 mg tid for 7 days
On hand: See label
Note: Partial bottles are not dispensed.
How much amoxicillin should be dispensed?

A) 105 mL
B) 100 mL
C) 126 mL
D) 200 mL

Question 6

Ordered: Amoxicillin 250 mg tid for 7 days
On hand: See label
Note: Partial bottles are not dispensed.
How much amoxicillin should be dispensed?

A) 1 bottle
B) 2 bottles
C) 3 bottles
D) 4 bottles

Question 7

Ordered: Citalopram 15 mg po bid for 60 days
On hand: Citalopram oral solution 10 mg/5 mL
What is the amount to dispense?

A) 450 mL
B) 600 mL
C) 900 mL
D) 1,800 mL

Question 8

Ordered: Clozaril 75 mg bid for 4 days
On hand: See label
What is the amount to dispense?

A) 8 tablets
B) 12 tablets
C) 18 tablets
D) 24 tablets

Question 9

Ordered: Clozapine 50 mg po qid for 7 days
On hand: See label
What is the amount to dispense?

A) 28 tablets
B) 56 tablets
C) 175 tablets
D) 350 tablets

Question 10

Ordered: Zemplar 4 mcg 3 times a week for 12 weeks
On hand: See label
What is the amount to dispense?

A) 36 capsules
B) 48 capsules
C) 72 capsules
D) 144 capsules

Question 11

Ordered: Insulin lispro 24 units subcut 4 times daily, with meals and at bedtime, for 90 days.
On hand: 1,000 unit vials of insulin lispro
Note: Partial vials are not dispensed.
What is the amount to dispense?

A) 3 vials
B) 7 vials
C) 8 vials
D) 9 vials

Question 12

The number of days a medication order should last is commonly called the

A) days' supply.
B) amount to administer.
C) insurance limit.
D) unit dose.

Question 13

Which of the following pieces of information is not necessary to calculate the days' supply of a medication?

A) quantity of medication in one bottle
B) amount of medication dispensed
C) number of doses per day
D) amount of a single dose

Question 14

Karen is an 8-year-old child who weighs 56 lb. Her mother called the pediatrician because Karen feels miserable due to a common cold. The pediatrician prescribed acetaminophen 320 mg every 4 to 6 hours as needed for fever and pain. Her mother purchased the medication shown here. If Karen receives 320 mg every 6 hours, how many full days will this bottle last?

A) 3 days
B) 6 days
C) 8 days
D) 16 days

Question 15

Ordered: nine 1,000 unit vials of insulin lispro; inject 38 units subcutaneously 4 times a day, with meals and at bedtime. How many days will this order last the patient?

A) 26 days
B) 27 days
C) 59 days
D) 60 days

Question 16

Ordered: Erythromycin Base Filmtab 250 mg 28; take 1 tab po q6h
What is the days' supply?

A) 4 days
B) 5 days
C) 7 days
D) 28 days

Question 17

Ordered: Artane 2 mg/5 mL, disp 16 fl oz; take 6 mg po daily
What is the days' supply?

A) 16 days
B) 96 days
C) 32 days
D) 48 days
E) 96 days.

Question 18

Ordered: Phenazopyridine 100 mg tablets 12, 1 tab po tid after meals
What is the days' supply?

A) 3 days
B) 4 days
C) 6 days
D) 12 days

Question 19

Ordered: Diltiazem 120 mg tablets 56; take 2 tabs once daily
What is the days' supply?

A) 14 days
B) 28 days
C) 56 days
D) 120 days

Question 20

Mrs. Peterson has been diagnosed with oropharyngeal and esophageal candidiasis. The physician has determined that an oral suspension is the best route of administration and has ordered fluconazole 40 mg/mL, disp 25 mL. She instructed Mrs. Peterson to take 200 mg on the first day, then 100 mg once daily until the medicine is gone. What is the days' supply?

A) 5 days
B) 8 days
C) 9 days
D) 10 days

Question 21

To calculate the amount of medication to _______________, the pharmacist or pharmacy technician needs to know the amount to administer for each dose, the number of doses per day, and the days' supply needed.

Question 22

When a licensed practitioner prescribes a medication for a patient, the number of days the prescription should last the patient is called the _______________.

Question 23

Ordered: Vistaril oral suspension 25 mg bid for 30 days
On hand: See label

Calculate the amount to dispense: _______________.

Question 24

Ordered: Vistaril oral suspension 75 mg qid for 14 days
On hand: See label

Calculate the amount to dispense: _______________.

Question 25

Ordered: Norvir 200 mg po q12h with meals for 21 days
On hand: See label

Calculate the amount to dispense: _______________.

Question 26

For an HIV-positive patient, the physician has ordered ritonavir 600 mg twice daily with meals. According to the label shown here, one bottle of Norvir would be enough to supply this patient for _______________.

Question 27

Ordered: Ranitidine 150 mg tablets #60; 1 tab po q6h

Calculate the days' supply: _______________

Question 28

Ordered: Gemfibrozil 600 mg tabs #120; take 1 tab po q12h

Calculate the days' supply: _______________.

Question 29

Ordered: 330 mL Acyclovir 200 mg/5 mL; take 400 mg po tid

Calculate the days' supply: _______________.

Question 30

James is a 12-year-old child who recently received a painful knee injury while playing basketball. At the walk-in clinic, the licensed practitioner said that the knee was badly twisted, but not broken, and suggested over-the-counter pain medications and rest. His parents gave him ibuprofen every 6 hours for pain. Two weeks later, James was taken back to the clinic. His knee was better, but he complained of nausea and "burning" in his abdomen. After further testing, it was determined that James had a gastric ulcer caused by the ibuprofen. The licensed practitioner prescribed ranitidine 15 mg/mL syrup, 120 mg twice a day by mouth for 28 days. Calculate the amount to dispense: _______________.

Question 31

Ordered: Tylenol 120 mg/5 mL, disp 300 mL; take 60 mg po q4h prn
Calculate the days' supply: _______________.

Question 32

Ordered: Allopurinol 300 mg tablets #90; take 1 tab po bid

Calculate the days' supply: _______________.

Question 33

Ordered: 2 Symbicort inhalers; take 1 puff every 12 hours.

Note: Each inhaler contains 100 inhalations.

Calculate the days' supply: _______________.

Question 34

Ordered: two 150 mL bottles of Tussionex ; take 1 ½ tsp q12h

Calculate the days' supply: _______________.

Question 35

Ordered: Neurontin 400 mg #120; take 1 capsule po tid

Calculate the days' supply: _______________.

Question 36

Ordered: three 10 mL vials of human chorionic gonadotropin; inject 1.25 mL once a day, at bedtime

Calculate the days' supply: _______________.

Question 37

Ordered: 6 fl oz doxycycline 80 mg/5 mL; take 1 tsp by mouth every 12 hours

Calculate the days' supply: _______________.

Question 38

Ordered: Amoxicillin 275 mg po tid for 10 days
On hand: See label

Note: Partial bottles are not dispensed.

Calculate the number of containers to dispense: _______________.

Question 39

Ordered: Zyrtec 2.5 mg po daily for 90 days
On hand: Zyrtec syrup 1 mg/mL

Calculate the amount to dispense: _______________.

Question 40

Ordered: Xanax 2 mg po bid for 14 days
On hand: See label

Calculate the amount to dispense: _______________.

Question 41

Ordered: Xanax 1 mg po bid for 21 days
On hand: See label (tablets are scored)

Calculate the amount to dispense: _______________.

Question 42

Ordered: Zoloft 100 mg po daily for 7 days
On hand: See label

Calculate the amount to dispense: _______________.

Question 43

Ordered: Novolin 70/30 insulin 32 units subcut 4 times a day, with meals and at bedtime, for 60 days.
On hand: See label

Calculate the number of vials to dispense: _______________.

Question 44

Ordered: Ibuprofen 800 mg po qid for 30 days
On hand: Ibuprofen 400 mg tablets

Calculate the amount to dispense: _______________.

Question 45

Ordered: Lasix 60 mg by mouth once a day, in the morning, for 30 days
On hand: Lasix 20 mg scored tablets

Calculate the amount to dispense: _______________.

Question 46

Ordered: Advair Diskus 250/50, 1 puff bid for 120 days
On hand: Advair Diskus 250/50, each Diskus provides 60 puffs

Calculate the number of Diskuses to dispense: _______________.

Question 47

Ordered: Vantin 200 mg q12h for 14 days
On hand: Vantin oral suspension 50 mg/5 mL

Calculate the amount to dispense: _______________.

Question 48

The patient is a 6-year-old child who weighs 45 lb.

Ordered: Cefprozil 7.5 mg/kg po q12h for 10 days
On hand: See label

Note: Partial bottles are not dispensed.


Calculate the number of bottles to dispense: _______________.

Question 49

The patient is a 3-year-old child who weighs 31 lb.

Ordered: Cefprozil 20 mg/kg po daily for 10 days
On hand: See label

Note: Partial bottles are not dispensed.

Calculate the number of bottles to dispense: _______________.

Question 50

Ordered: Insulin Lispro 16 units qid subcut before each meal and at bedtime for 60 days
On hand: See label

Calculate the number of vials to dispense: _______________.

Question 51

Ordered: Insulin Lispro 33 units qid subcut before each meal and at bedtime for 90 days

On hand: See label

Calculate the number of vials to dispense: _______________.

Question 52

Ordered: Elavil 100 mg po at bedtime for 30 days
On hand: Elavil 50 mg tablets

Calculate the amount to dispense: _______________.

Question 53

Ordered: Baclofen 15 mg po tid for 30 days
On hand: Baclofen 10 mg scored tablets

Calculate the amount to dispense: _______________.

Question 54

Ordered: Trileptal 300 mg po bid for 14 days
On hand: See label

Calculate the amount to dispense: _______________.

Question 55

The patient is a 10-year-old child who weighs 72 lb.

Ordered: Trileptal 4 mg/kg po bid for 21 days
On hand: See label

Calculate the amount to dispense: _______________.

Question 56

Ordered: Symbicort 2 inhalations q12h for 30 days
On hand: Symbicort inhalers; each inhaler contains 120 inhalations

Calculate the number of inhalers to be dispensed: _______________.

Question 57

Ordered: 140 mL Benadryl 12.5 mg/5 mL; take 2.5 mL po q6h

Calculate the days' supply: _______________.

Question 58

Ordered: 160 mL Benadryl 12.5 mg/5 mL; take 40 mg po q8h

Calculate the days' supply: _______________.

Question 59

Ordered: Lodine 300 mg #42; take 1 cap po bid

Calculate the days' supply: _______________.

Question 60

Ordered: Coumadin 1 mg scored tablets #63; take 1.5 mg po 3 times daily

Calculate the days' supply: _______________.

Question 61

Ordered: four 1,000 unit vials of Levemir insulin; inject 25 units subcut daily

Calculate the days' supply: _______________.

Question 62

A patient with obsessive-compulsive disorder is taking Zoloft 50 mg po twice a day. The bottle of medication shown here will last the patient _______________.

Question 63

An epileptic patient is taking Trileptal 600 mg po twice a day. The bottle of medication shown here will last the patient _______________.

Question 64

Ordered: 2 Atrovent inhalers; take 2 inhalations every 6 hours. Each inhaler contains 200 inhalations. Calculate the days' supply: _______________.

Question 65

Ordered: Two Lantus U-100, 10 mL vials; administer 18 units subcut once daily

Calculate the days' supply: _______________.

Question 66

Ordered: Four 10 mL vials of Humalog U-100; inject 32 units subcut 4 times a day, before meals and at bedtime

Calculate the days' supply: _______________.

Question 67

A patient has been ordered to take Amoxicillin 500 mg every 12 hours. One bottle of the medication shown here would last the patient _______________.

Question 68

The patient is a 4-year-old child who weighs 35 lb.

Ordered: Amoxicillin 12.5 mg/kg q12h for 14 days
On hand: See label

Calculate the amount to dispense in mL: _______________.

Question 69

Ordered: Amoxicillin 875 mg q12h for 14 days
On hand: See label

Calculate the amount to dispense in mL: _______________.

Question 70

Ordered: Cephalexin 500 mg po 3 times a day for 14 days
On hand: Cephalexin 500 mg capsules

Calculate the amount to dispense: _______________.

Question 71

Ordered: Fosamax 70 mg po once per week for 20 weeks
On hand: Fosamax 70 mg tablets

Calculate the amount to dispense: _______________.

Question 72

Ordered: Celexa 15 mg po bid for 60 days
On hand: Celexa oral solution 10 mg/5 mL

Calculate the amount to dispense: _______________.

Question 73

Ordered: Clozaril 25 mg po q6h for 14 days
On hand: See label

Calculate the amount to dispense: _______________.

Question 74

Ordered: Lexapro 20 mg once daily for 45 days
On hand: Lexapro 10 mg tablets

Calculate the amount to dispense: _______________.

Question 75

Ordered: Prandin 1 mg by mouth 3 times daily before meals for 30 days
On hand: Prandin 0.5 mg tablets

Calculate the amount to dispense: _______________.