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The Pharmacy Technician Workbook & Certification Review Ch 6

### If a compounding order calls for Flagyl 125mg bid x 7 days and only 500 mg tablets are available, how many tablets will it take to fill the order?

3.5

###
How much talc is needed for an order of 120 gm of the following compound:

Nupercainal ointment 4%, zinc oxide 20%, talc 2%?

2400mg

### A prescription calls for 200mg of a drug that you have in 10mg/15ml concentration. How many ml of the liquid do you need?

10mg/15ml=200mg/x

10mg(x)=15ml(200mg)

x=300ml

### An IV requires the addition of 40 mEq potassium chloride (KCL). You have a vial of KCL at a concentration of 20mEq per 10ml. How many ml should be added?

20mg/10ml=40mg/x

20mg(x)=10ml(40mg)

x=20ml

### If 200 grams of dextrose is ordered using a 50% dextrose solution, how many ml are needed?

50%=50g/100ml

50g/100ml=200g/x

50g(x)=100ml(200g)

x=400ml

### A prescription calls for 0.36mg of a drug that you have in 50mcg/ml concentration. How many ml do you need?

0.36mg=360mcg

50mcg/1ml=360mcg/x

50mcg(x)=360mcg(1ml)

x=7.2ml

### The infusion rate of an IV is 300ml over 5 hours. What is the ml/minute rate?

300ml/5h=60min/x

300ml(x)=5h(60min)

x=1ml/min

### An IV calls for administration of 1.5ml/minute of a solution for four hours. How much solution will be needed?

1.5ml/min=x/240min

1.5ml(240min)=x(1min)

x=360ml

### If a physician orders 25% dextrose 1000ml and all you have is 70% dextrose 1000ml, how much 70% dextrose and how much sterile water will be used?

70%-25%=45 parts water

25%-0%=25 parts 70% dextrose

45+25=70 parts total

25/70 x 1000ml= 357ml 70% dextrose

45/70 x 1000ml=643ml sterile water

### If a physician orders 20% dextrose 1000ml and all you have is 70% dextrose 1000ml, how much 70% dextrose and how much sterile water will be used?

70%-20%=50 parts water

20%-0%=20 parts 70% dextrose

50+20=70 parts total

20/70 x 1000ml=286ml 70% dextrose

50/70 x 1000ml=714ml sterile water