# Calculations V: Exam - Style Math Practice

Term
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A pharmacist receives a prescription for a 1.5% w/w hydrocortisone cream using cold cream as the base. She will use hydrocortisone injection (100 mg/mL, SG 1.5) to prepare the prescription because she has no hydrocortisone powder in stock. How many grams of cold cream are required to compound 60 grams of the preparation? Round to the nearest one decimal place.
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Terms in this set (24)
A pharmacist receives a prescription for a 1.5% w/w hydrocortisone cream using cold cream as the base. She will use hydrocortisone injection (100 mg/mL, SG 1.5) to prepare the prescription because she has no hydrocortisone powder in stock. How many grams of cold cream are required to compound 60 grams of the preparation? Round to the nearest one decimal place.
A pharmacist will prepare an amoxicillin suspension to provide a 1600 mg daily dose for a child with an otitis media infection. The dose will be divided BID. To prepare amoxicillin 200 mg/5mL, the pharmacist should add 76 mL of water to the powder for a final volume of 100 mL. The pharmacist mistakenly adds too much water and finds that the final volume is 110 mL. The pharmacy has no other bottles of amoxicillin, so the pharmacist will dispense the bottle with extra water added. How many mL should the patient take twice daily to receive the correct dose? Round to the nearest whole number.
A patient is receiving D5 1/2NS with potassium chloride at 20 drops/min. After 10 hours, the patient has received a total of 40mEq of potassium chloride using tubing that delivers 15 drops/mL. What is the percentage concentration of potassium chloride in the patient's IV fluid? Round to 2 decimal places. MW of K = 39, MW of Cl = 36
An order is written for a dopamine drip in the ICU. The order reads "Start dopamine drip at 3 mcg/kg/min, titrate by 5 mcg/kg/min Q5 minutes to achieve SBP above 100 mmHg. Page the critical care resident for additional orders if maximum dose of 20 mcg/kg/min is reached. The patient weighs 165 pounds and the ICU stocks premixed dopamine drips (400 mg/250 mL) in the automated dispensing cabinet. What rate (mL/hr) should the dopamine drip be started at? round to the nearest whole number.
A 46 year old female with radiation enteritis is receiving 1800 kcal from her parenteral nutrition. The solution contains amino acids, dextrose, and electrolytes. There are 84.5 grams of protein in the PN and it is running at 85 mL/hr over 24 hours. What is the final concentration of dextrose in the PN solution? Express the answer as a percentage. Round to the nearest whole number.
A pharmacist in an oncology clinic receives the following prescription for a patient with Hodgkin's lymphoma: Prednisone 40 mg/m^2/day PO on days 1-14. The patient is 5'1'' and weighs 116 pounds. The hospital uses the following formula for BSA (m^2) = 0.007184 x height (cm)^0.725 *weight (kg)^0.425. How many 20 mg tablets should be dispensed?