Reconstitution Calculations Quizzes

A 30 lb child has to take clindamycin 4 mg/kg TID for 14 days. The pharmacy has clindamycin 150 mg/5 mL in stock. How many milliliters will be needed to fill the prescription? Round answer to the nearest tenth. Do not include units.

A patient brings in a prescription to the pharmacy for amoxicillin 250 mg BID x 10 days. You dispensed 4 ounces of amoxicillin 125 mg/5 ml. How many days short was the prescription filled? Round answer to the nearest whole number. Do not include units.

A pediatric antibiotic is to be administered to a 60-lb child in three divided doses of 60 mg/kg/day. If the pharmacy has a 1 g vial in stock and label instructions indicate to add 2.5 mL diluent to obtain a final volume of 3 mL, how many milliliters of the reconstituted antibiotic does the child need per dose? Round answer to the nearest hundredth. Do not include units.

A doctor writes a prescription for Augmentin 500 mg PO BID x 7 days. Pharmacy stock contains Augmentin 400 mg/5 ml and there are 200 ml bottles. The prescription is filled with 100 mL and the patient goes home. The patient calls back a week later wondering why they have medication left over. How much medication is left over after the 7 days of therapy? Round answer to the nearest tenth. Do not include units.

A cephalexin bottle contains 400 mg/5 ml when reconstituted with 97 ml for a final volume of 100 ml. if 100 ml was accidently added, how much cephalexin will be in 7 ml? Round answer to the nearest tenth. Do not include units.

Label instruction for an antibiotic dry powder for oral suspension direct the pharmacist to add 95 mL of sterile water for injection (SWFI) to the powder to obtain 120 mL of a suspension containing 200 mg of antibiotic in each 5 mL prepared. If the correct dose of the antibiotic is 6 mg/kg of body weight, how many milliliters of SWFI should be used to dilute the dry powder to obtain the recommended dose in each teaspoonful for a 50-lb child? Round answer to the nearest whole number. Do not include units.

A medication order calls for the following prescription for an ophthalmic ointment:

Cyclosporine 1% (w/w)
Sterile water for injection q.s.
Hydrophilic ointment ad 10 g

In stock is a 500 mg vial of dry powder which upon constitution results in a solution with a concentration of 50 mg/mL. How many milliliters of the reconstituted medication should be used to compound the prescription? Round answer to the nearest whole number. Do not include units.

If 93 ml of sterile water is added to 10 g of vancomycin for a final volume of 100 ml, how many milliliters contains 250 mg of vancomycin? Round answer to the nearest tenth. Do not include units.

The label instructions for KEFUROX specifies that when 77 mL of sterile water is added to a 7.5 g vial, the resulting 80 mL solution has a Cefuroxime concentration of 468.75 mg per teaspoonful. How many milliliters of sterile water should be added to the dry powder so that a 55-lb child would received the recommended 6 mg/kg dose in each 5 mL of the suspension? Round answer to the nearest whole number. Do not include units.

The recommended dose for a pediatric antibiotic is 40 mg/m2. If the package insert instruction specifies that when 7 mL of diluent is added to the dry powder, a 10 mL suspension with a concentration of 250 mg per teaspoonful is obtained. How many milliliters of diluent should be added to the dry powder to obtain the recommended dose in 15 drops if a 20 drops/mL dropper is used and the patient has a body surface area of 0.5 m2? Round answer to the nearest hundredth. Do not include units.