Dosage Calculation – Examples Questions & Answers 100% Correct!

A nurse is providing instruction to a client who has a new prescription for cimetidine 150 mg PO every 12 hr. Available is 300 mg/5 mL. How many tsp should the nurse instruct the client to take per dose? (Round answer to nearest tenth). - ANSWERx tsp = 1 tsp/5mL X 5mL/300mg X 150mg/1 = 0.5 tsp A provider prescribes magnesium hydroxide 2.4 g PO daily. Available is 400mg/5mL. How many mL should the nurse administer? (Round answer to nearest whole number) - ANSWERx mL = 5mL/400mg X 1,000mg/1g X 2.4g/1 = 30 mL A nurse is reviewing instructions with a client who has a new order prescription for furosemide 75 mg PO daily. Available is 10mg/mL. The nurse should instruct the client to take how many tsp daily? (Round answer to nearest tenth) - ANSWERX tsp = 1tsp/5mL X 1mL/10mg X 75mg/1 = 1.5 tsp A provider prescribes sodium polystyrene sulfonate 4 oz PO every 6 hr. Available is 60 mL/unit dose. How many unit doses should the nurse administer every 6 hrs? (Round answer to nearest whole number) - ANSWERx unit doses = 1 unit dose/60 mL X 30mL/1oz X 4oz/1 = 2 unit doses A provider prescribes clonidine 200 mcg PO daily. Available is 0.2 mg/tablet. How many tablets should the nurse administer? Move the number of tablets into the medication cup. - ANSWERx tablet = 1tab/0.2mg X 1mg/1000mcg X 200mcg/1 = 1 tablet A provider prescribes magnesium hydroxide 2 oz PO daily. The amount available is 30mL/unit dose. How many unit doses should the nurse administer? (Round answer to nearest whole number) - ANSWERx unite doses = 1unit dose/30mL X 30mL/1oz X 2oz/1 = 2 unit doses A provider prescribes metronidazole 2g PO before discharge. Available is