CETP Pharmaceutical Calculations 3

Question 1

A 250 mg vancomycin dose is prepared in 250 mL of NS and must infuse over 90 minutes. What is the required infusion rate in mL/hr?

Accepted Answer

166.7 mL/hr

Answer

100 mL/hr

Answer

125 mL/hr

Answer

200 mL/hr

Question 2

Calculate the osmolarity of a solution containing 154 mEq/L of sodium and 154 mEq/L of chloride.

Accepted Answer

308 mOsm/L

Answer

154 mOsm/L

Answer

200 mOsm/L

Answer

410 mOsm/L

Question 3

A prescription requires hydrocortisone 2.5% cream, 60 g. How many grams of hydrocortisone active ingredient are needed to prepare this compound?

Accepted Answer

1.5 g

Answer

0.25 g

Answer

0.75 g

Answer

1.0 g

Question 4

A patient has a GFR of 30 mL/min. A drug is normally dosed at 500 mg every 8 hours for patients with normal renal function (GFR ≥ 90 mL/min). Using proportional dose reduction, what is the renally adjusted dose?

Accepted Answer

167 mg every 8 hours

Answer

83 mg every 8 hours

Answer

100 mg every 8 hours

Answer

250 mg every 8 hours

Question 5

How many mL of a 1:1000 epinephrine solution must be drawn up to administer a 0.5 mg dose?

Accepted Answer

0.5 mL

Answer

1.0 mL

Answer

5.0 mL

Answer

10.0 mL

Question 6

A pharmacist needs to prepare 200 mL of a 0.05% benzalkonium chloride solution using a 10% stock solution. How much stock solution is required?

Accepted Answer

1.0 mL

Answer

0.1 mL

Answer

5.0 mL

Answer

10.0 mL

Question 7

A patient is prescribed digoxin 0.25 mg once daily. The only available tablets are 0.125 mg. How many tablets should be dispensed per dose?

Accepted Answer

2 tablets

Answer

0.5 tablet

Answer

1 tablet

Answer

4 tablets