If 31.2 mL of water is added to 0.8 mL of drug A, what is the ratio and the percentage of the strength of the solution?
0.8 / (31.2+0.8) = 0.8 / 32 = 1/40. This means the percentage is 2.5% and the ratio is 1:39
A medication order calls for two tablets q.i.d. the first day, one tablet b.i.d. the second and third days, and one tablet q.d. thereafter for a total of two weeks. How many tablets must be dispensed in total?
QID is 4x a day, BID is 2x a day, and QD is 1x a day. 2*4*1+1*2*2+1*1*(14-3) = 8+4+11=23
A medication order calls for 1.5 liters of glucose solution to be administered by IV over a 10-hour period. What will be the flow rate if the drop factor is 10?
If you remove 75 milliliters, 1.2 liters, 400 milliliters, and 1/4 liter from a container of solution, how many milliliters did you remove in total?
75 + 1200 + 400 + 250 = 1925 ml
A 45 kg patient requires a 450 mg dose of a particular drug. A solution contains 150 mg of the drug per teaspoon. How many mL of the solution should be given to the patient to deliver the required dose of drug?
450 / 150 = 3 tsp. 1 tsp = 5 ml, so 15 ml dose.
How many grams of a drug must be used to prepare 3 liters of a 2% solution?
3 * 0.02 = 0.06 g
A particular drug is supplied in tablets of 600-mg strength. A 90 lb patient requires a one-week supply of this drug at a dose of 20 mg/lb every 12 hours. How many tablets are required in total?
An animal is to receive 250 mg metronidazole by IV every 12 hours and to give over 60 minutes. The metronidazole comes in 5 mg/mL. What is the flow rate in drops per minute if the drop factor is 10?
If 425 grams of sucrose are dissolved in enough water to make 2,000 milliliters of solution, what is the percentage strength of the solution?
425 / 2000 = 21.25%
A doctor administers 2 mL of a 50 mg/mL sedative to a 180 lb patient. What is the equivalent dose in mg/kg?
If there's 1.2 g of codeine in 125 mL of a particular cough syrup, how many milligrams are contained in 1 teaspoon of the syrup?
If a 176 lb patient must be given 1 mL/kg of a drug every 8 hours for 7 days, what is the total volume of drug that must be administered?
Your patient needs 0.6 grams of Quinidine q.i.d. You have 200 mg tablets on hand. How many tablets are needed at each dosage time?
0.6 g = 600 mg, so 3 tablets are needed each time.
Ketamine is available in a 100 mL vial that contains 100 mg/mL. If 1 mL of ketamine is diluted 1:50, how many mg are in 5 mL of diluted solution?
Since 100 mL has 100 mg, 1 mL has 1 mg. If it is diluted 1:50, then 1 mg is in 51 mL. This means that there is 5/51 mg in 5 mL
One tablet contains 8 mg of a particular drug. A medication order calls for three and one-half tablets to be given to a 150 lb patient. What dose of the drug is given to this patient, in mg/kg?
If an IV solution contains 8% mannitol, how many mL of the solution should be administered to provide a patient with 50 grams of mannitol?
Since each mL contains 8 g, you need 50/8 = 6.5 mL
You're ordered to give your patient 20 mg of Lasix IV. You have on hand a 10 mL vial containing 100 mg. What is the correct dosage?
20/100=1/5 so use 1/5 of 10 mL so 2 mL will do it.