PT150
Week 5
Chapter 6
Chapter 11
Review
100
A physician ordered Prozac (fluoxetine) 20 mg qam for a 15-day trial period. Available stock is 10 mg capsules. How many capsules are needed to fill this prescription?
2 tabs x once a day x 15 days = 30 tabs
100
A physician orders 200 mcg of ATROPINE SULFATE IM stat and then every hour until poisoning symptoms subside. How many doses are in one 10-mL vial of ATROPINE SULFATE Injection 400 mcg/mL?
400mcg/mL 200mcg/X = 0.5mL/dose
10mL vial / 0.5mL dose = 20 doses in one vial
100
A physician orders Suprax 150 mg q12h until all medication has been taken. How many days will a 100-mL bottle of Suprax Oral Suspension 100 mg/5 mL last?
100mg/5mL 150mg/X = 7.5mL x 2 times a day = 15mL a day
100mL stock bottle / 15mL = 6.6 or 6 days
100
A physician ordered Septra DS for a urinary tract infection to be taken take bid × 10 days and then daily × 21 days. How many tablets should be dispensed?
1 tab x 2 times a day x 10 days = 20 tabs
1 tab x 21 days = 21 tabs
20 + 21 = 41 tabs
200
A prescription is received for ranitidine syrup 90 mg bid, dispense 16 oz.
The stock strength available is ranitidine 15 mg/mL syrup.
What is the days' supply to be entered for insurance purposes?
15mg/mL 90mg/X = 6mL per dose x 2 times a day = 12mL per day
16 oz bottle x 30mL = 480mL / 12mL = 40 days
200
A physician orders amoxicillin 500 mg tid × 14 days. How many 100-mL bottles of amoxicillin 250 mg/5 mL oral suspension are needed to fill this prescription?
250mg/5mL 500mg/X = 10mL/dose
10mL x 3 times a day x 14 days = 420mL needed to give the patient
420mL / 100mL stock bottle = 4.2 bottles needed or 5 bottles
300
A physician orders Cogentin (benztropine) 0.001 g qam and 0.5 mg qpm. How many 0.5 mg tablets are needed for a 3 month supply? Don't forget to convert g to mg is X1000
0.001g = 1mg = 2 tablets qam x 90 days = 180 tabs
0.5mg = 1 tablet qpm x 90 days = 90 tabs
180 tabs + 90 tabs = 270 tabs
300
A physician orders OXACILLIN SODIUM 500 mg IM q6h × 5 days. Once reconstituted, a 2-g vial of OXACILLIN for Injection contains 250 mg/1.5 mL.
What volume of medication should be administered q6h?
How many vials of medication are needed for the full order? Convert g to mg x1000
250mg/1.5mL 500mg/X = 3mL per dose x 4 times a day x 5 days = 60mL total needed
2g x 1000 = 2000mg per vial
250mg/1.5mL 2000mg/X = 12mL per vial
60mL / 12mL = 5 vials needed to give patient
300
A physician orders amoxicillin 125 mg tid, # 300 mL, Take Until Gone. The medication strength is amoxicillin 125 mg/5 mL. How many days will the prescription last?
5mL x 3 times a day = 15mL/day
300mL / 15mL = 20 days
300
A physician orders Keflex 62.5 mg qid × 12 days. How many 80-mL bottles of cephalexin oral suspension 125 mg/5 mL should be dispensed to fill this prescription?
125mg/5mL 62.5mg/X = 2.5mL x 4 times a day x 12 days = 120mL needed
120mL / 80mL bottle = 1.5 bottles or 2 bottles given to the patient
400
A physician orders Diflucan oral suspension 250 mg now followed by 150 mg daily for a total of two weeks for oropharyngeal candidiasis. How many 35-mL bottles of Diflucan (fluconazole) 10 mg/mL Suspension are needed to fill this prescription?
10mg/mL 250mg/X = 25mL
10mg/mL 150mg/X = 15mL x 13 days = 195mL
25mL + 195mL = 220mL / 35mL bottle = 6.28 or 7 bottles
500
A physician orders Lanoxin elixir 100 mcg daily for a child. The medication available is digoxin elixir 0.05 mg/mL. How many milliliters are needed for a one-month supply? Don't forget to convert mg to mcg x1000
50mcg/mL 100mcg/X = 2mL daily x 30 days = 60mL needed for one month
500
A physician orders Coumadin 5 mg on even days and Coumadin 
mg on odd days. The physician requests that the prescription be filled with only Coumadin 5 mg scored tablets.
How many tablets are needed on even days?
How many tablets are needed on odd days?
How many are needed for a 60-day prescription?
1 tab on even days x 30 days = 30 tabs
1.5 tabs on odd days x 30 days = 45 tabs
30 tabs + 45 tabs = 75 tabs for 60 days
500
A physician orders phenobarbital gr i tid for a patient with seizures. 60 mg tablets are available. How many tablets are needed for a one-month supply?
Use 60 mg = gr i
1 tab x 3 times a day x 30 days = 90 tabs
500
A physician orders HEPARIN SODIUM 2,500 units subcut q12h × 7 days. Stock:1-mL multi-dose vials of HEPARIN SODIUM 5,000 units/mL.
What volume of medication should be administered per dose?
How many doses of medication are in one vial of medication?
How many total vials of medication are needed for the medication order as written?
5,000u/mL 2,500u/X = 0.5mL per dose x 2 times a day x 7 days = 7mL total needed
There are 2 doses in each 1mL vial
7 vials will be given to the patient for the 7 days
500
A physician orders regular insulin 55 units qam and 35 units qpm for a person with diabetes. One vial contains 10 mL of U-100 regular insulin.
How many units are needed per day?
How many vials of medication are needed for a month's supply?
How many packages of insulin syringes (10 per package) are needed?
55u = 0.55mL qam + 35u = 0.35mL qpm
0.55mL + 0.35mL = 0.9mL per day
0.9mL x 30 days = 27mL / 10 mL vials = 2.7 or 3 vials
The patient needs 2 syringes a day x 30 days = 60 syringes / 10 syringe package = 6 packs