PHARMACEUTICAL CALCULATION COMPILED QUESTIONS AND ANSWERS

PHARMACEUTICAL CALCULATION PACOP COMPILED Subject: PHARMACEUTICAL CALCULATIONS (VIOLET) QUESTIONS AND ANSWERS 1. A 15-g tube of Triamcinolone acetonide 0.025% is prescribed for one of your patients. How much triamcinolone acetonide is present in the preparation? A. 3.75 g B. 3.75 mg C. 3.5 g D. 0.375 g E. 0.025 mg 2. If a 1-lb jar of ointment contains 55 g of active ingredient, what is the percent concentration of active ingredient in preparation? A. 12% B. 15% C. 5.5% D. 10% E. 55% 3. A medication order calls for 750 mL of D5W to be infused over a 10-hour period. If an IV administration set that delivers 10 drops/mL is to be used, how many drops per minute should be delivered to the patient? A. 11 drops B. 10 drops C. 13 drops D. 7.5 drops E. 8 drops 4. An oral solution contains 75mg of active drug per ml. How many milligrams of active drug would there be in calculated dose 0.5mL? A. 37.5 mg B. 50 mg C. 75 mg D. 7.5 mg E. 0.5 mg 5. A patient is prescribed a potassium chloride elixir that contains 20 mEq of potassium ion in each 15 mL of elixir. How many milliliters should the patient take to provide 40 mEq of potassium ion? A. 20 mL B. 15 mL C. 30 mL D. 40 mL E. 50 mL 6. The recommended dose for drug is 5 mg per kg of a patient’s weight. If the drug comes in a preparation containing 15mg/5ml, what would be the dose, in mL, for a patient weighing 15 kg? A. 30 mL B. 25 mL C. 15 mL D. 10 mL E. 20 mL 7. An injectable drug contains 2.5 mg of dug per 5 ml vial. If patient’s dose id determined to be 150 mcg, how many mL of the drug should be administered to the patient? A. 0.3 mL B. 0.5 mL C. 0.1 mL D. 0.2 mL E. 0.4 mL 8. How many grams of digoxin would be required to make 15,000 tablets each containing 250 mcg of digoxin? A. 500 g B. 3.75 g C. 2.5 g D. 5 g E. 15 g 9. An injection contains 40mg/0.8 mL of drug. How many mL should be administered to provide 75 mg of the drug? A. 1.5 mL B. 2 mL C. 7.5 mL D. 0.4 mL E. 0.8 mL 10. An oral inhalation for asthma contains 100 mcg of mometasone furoate and 5 mcg of formoterol fumarate per inhalation. If the patient is directed to use the inhaler as “two inhalations twice daily”, what would be the amount of each drug inhaled daily? The answers should be expressed in mg. A. 0.2 mg mometasone, 0.1 mg formoterol B. 0.4 mg mometasone, 0.2 mg formoterol C. 0.6 mg mometasone, 0.3 mg formoterol D. 0.8 mg mometasone, 0.04 mg formoterol E. 1 mg mometasone, 0.05 mg formoterol 11. A prefilled syringe contains 2 mg of active drug in 5 ml of solution. How many micrograms of drug is administered by injecting 0.5 ml of the solution? A. 0.2 mcg B. 400 mcg C. 0.4 mcg D. 200 mcg E. 215 mcg 12. A salbutamol inhaler contains 75 mcg of drug per inhalation. How many inhalation does could be delivered if the inhaler contains 20 mg of salbutamol? A. 267 inhalations B. 250 inhalations C. 325 inhalations D. 472 inhalations E. 752 inhalations 13. What does the abbreviation p.r.n. means? A. As needed B. By mouth C. Repeat D. At bedtime E. As directed 14. An otic solution contains 0.2 mg of active ingredient in 2.5 mL containers. What is the percent strenght of the active ingredient in the solution? A. 0.08% w/v B. 0.008% w/v C. 0.04% w/v D. 0.95% E. None of these 15. Rx Potassium permanganate 0.03% Purified water ad. 250 mL Sig. As directed Determine the amount of potassium permanganate that should be used to compound the prescription. A. 30 g B. 0.075 g C. 0.3 g D. 7.5 g E. 260 g