Dosage Calculations - Practice Questions and answers

A patient has amantadine (Symmetrel) ordered for relief of symptoms associated with Parkinson's disease. The phyisican orders Amantadine 100 mg p.o. t.i.d. and the suppy is 50 mg/5mL syrup. How many mLs do you need? 10 mL A patient is has phenobarbital (Luminal) ordered for a sleep disturbance. The doctor orders Luminal at 0.1 g p.o. hs. The supply is at 20 mg/5mL. How many mL should be given? 25 mL A patient has diclofenac (Cataflam) ordered for rheumatoid arthritis pain relief. The doctor orders Cataflam 75 mg p.o. t.i.d.. The supply is 50 mg scored tablets. How many tablets do you give? 1.5 Tablets A patient has dexamethasone (Decadron) ordered as an anti-inflammatory agent for obstructive airway disease. The doctor orders Dexamethasone 750 mcg p.o. b.i.d.. The supply is 0.75 mg scored tablets. How many tablets should you give? 1 Tablet Doctor orders Dilantin 0.1 g p.o. daily. The supply is Dilatin 100 mg capsules. How many capsules do you administer? 1 Capsule Doctor orders Lanoxin 0.125 mg p.o. daily. The supply is Lanoxin 0.25 mg tablets. How many tablets do you give? 0.5 Tablet Doctor orders Tranxene 7.5 mg p.o. b.i.d.. The supply is Tranxene 3.75 mg capsules. How many capsules do you administer? 2 Capsules Doctor orders codeine 60 mg p.o. q 4 hr prn pain. Supply is Codein 30 mg tablets. How many tablets do you give? 2 Tablets Doctor orders Snythroid 0.05 mg p.o. daily. Supply is 50 mcg tablets. How many tablets do you give? 1 Tablet Doctor orders Benadryl 30 mg p.o. t.i.d.. Supply is Benadryl 12.5 mg per 5 mL. How many mL do you give? 12 mL Doctor orders Nystatin 450,000 units p.o. q.i.d. Supply is Nystatin 100,000 units per mL. How many mL do you give? 4.5 mL Doctor orders 20 mg p.o. b.i.d. Supply is Pepcid 40 mg per 5 mL. How many mL do you give? 2.5 mL Doctor orders Vancomycin 200 mg p.o. t.i.d. Supply is Vancomycin 250 mg/5mL 4 mL A patient has a stat order of glycopyrrolate (robinul) to minimize bradycardia during intubation. The order is Robinul 300 mcg IM stat. The supply is 0.2 mg/mL. How many mL do you give? 1.5 mL A patient has streptomycin injections to treat tuberculosis. The doctor order Arixtra 2.5 mg SQ daily. The supply is 5 mg/0.4 mL. How many mL do you give? 0.2 mL The doctor orders Phenergan 15 mg IM q4h p.r.n.. The supply is 25 mg/ml. How many mL do you give? 0.6 mL Doctor orders streptomycin 0.8 g IM twice weekly. The supply is 500 mg/mL. How many mL do you give? 1.6 mL How many kilograms does a boy weigh if he is 89 pounds? 40.4 lb 89/2.2 = 40.3697 = 40.4 lb How many milliliters are in 10 ounces? How many tablespoons? Answer: 300 mL and 20 T 1 oz = 30 mL