Pharmacy Dosage Calculations 3

Question 1

A patient weighs 88 kg and is prescribed 5 mg/kg/day of a medication divided into two doses. What is each dose in mg?

Accepted Answer

220 mg

Answer

110 mg

Answer

176 mg

Answer

440 mg

Question 2

How many grams of dextrose are in 500 mL of D5W (5% dextrose in water)?

Accepted Answer

25 g

Answer

5 g

Answer

10 g

Answer

50 g

Question 3

A prescription reads: metformin 1,000 mg PO BID × 30 days. How many tablets of 500 mg strength are needed to fill this prescription?

Accepted Answer

120 tablets

Answer

60 tablets

Answer

90 tablets

Answer

180 tablets

Question 4

An ointment requires 3% salicylic acid. The pharmacy has 6% and 1% preparations. Using alligation, what ratio of 6% to 1% is needed?

Accepted Answer

2:3

Answer

1:1

Answer

2:1

Answer

3:2

Question 5

Convert 2.5 tablespoons to mL. (1 tablespoon = 15 mL)

Accepted Answer

37.5 mL

Answer

25 mL

Answer

30 mL

Answer

45 mL

Question 6

A solution contains 250 mcg/mL. A patient needs 0.5 mg. How many mL should be administered?

Accepted Answer

2 mL

Answer

0.5 mL

Answer

1 mL

Answer

5 mL