VTNE Medical Calculations Exam
Questions and Answers 2023/2024
How many milligrams of a drug should be given to a patient who weighs 22 lb if the
dose is 0.2 mg/kg? - ANSWER 22 lb÷2.2 lb/kg×0.2 mg/kg=
answer: 2 mg
A 75-lb dog must be dewormed. If the daily dose of the dewormer is 1 tsp/25 lb of
body weight for 3 days, approximately how much should be given each day? -
ANSWER 1 tbs = 3 tsp
answer: 1 tbs
A cat on intravenous fluids must receive 30 ml/hr normal saline. If this cat has a
drip set that provides 60 drops/ml, what should the drip rate be? - ANSWER (30
ml/h)×(60 dr/sec)÷(3600 sec/h)=
answer: 0.5 drop/sec or 1 drop/2 sec
The concentration of furosemide (Lasix) is 5%. How many milligrams are in 0.5 ml?
- ANSWER 5%=50 mg/1 ml or 25 mg/0.5 ml
answer: 25
How many milliliters of a drug with a concentration of 100 mg/ml should be given
to a 75-lb dog at a dose of 1 mg/lb? - ANSWER 75 lb×1 mg/lb÷100 mg/ml=
answer: 0.75 ml
A prescription in which 3 ml of lactulose are given orally twice daily will require
how many ounces to last at least 30 days? - ANSWER (3 ml×2 per day)×30 days=180
ml÷30 ml/oz=
answer: 6oz
A commercial dog food is 420 kcal/cup. A dog weighing 60 lb fed at a rate of 70
kcal/lb/day should be fed how many cups at each meal if you feed him twice a day?
- ANSWER (60 lb)×(70 kcal/lb/day)÷(420 kcal/cup)÷2 feedings/day=
answer: 5 cups
A cockatiel needs 100 mg/kg piperacillin via intramuscular injection. If the bird
,2
weighs 80 g, and the concentration of piperacillin is 100 mg/ml, how many
,3
milliliters should be given? - ANSWER 80 g÷1000 g/kg×100 mg/kg÷100 mg/ml=
answer: 0.08 ml
A rabbit needs 300 μg/kg of a 1% ivermectin solution. If the rabbit weighs 8 lb, how
many milliliters of ivermectin should be given? - ANSWER 8 lb÷2.2 lb/kg×300
μg/kg÷1000 μg/mg÷10 mg/ml=
answer: 0.1 ml
How many milliliters of a 50% dextrose solution are needed to make 1000 ml of a
5% dextrose solution? - ANSWER 5%=50 mg/ml×1000 ml/L=50,000 mg/L; 50,000
mg/L÷500 mg(50% = 500 mg/ml)=
answer: 100 ml
(100 ml 50% dextrose + 900 ml water = 1000 ml of 5% dextrose)
Six 12-oz puppies need deworming medication. If the dose is 1 ml/lb, how many
milliliters do you dispense? - ANSWER 12 oz÷16 oz/lb×1 ml/lb×6 puppies=
answer: 4.5 ml
To make a solution with a concentration of 15 mg/ml, how many milliliters of
sterile water should be added to 30 g of powdered drug? - ANSWER 30 g×1000
mg/g÷15 mg/ml=
answer: 2000 ml
How many tablets would you dispense for a 30-day supply of a drug with a dose of
one and one-half tablets three times daily? - ANSWER 1.5 tablets/dose×3
doses/day×30 days=
answer: 135 tablets
One gram of powdered drug diluted with how many milliliters of sterile water will
make a concentration of 20 mg/ml? - ANSWER 1 g×1000 mg/g÷20 mg/ml=
answer: 50 ml
You regularly order six 10-ml vials per month of a drug that has a concentration of
50 mg/ml. Now that same drug is available in only 20-ml vials of 10 mg/ml. How
many vials should you order this month to get the same total amount of drug? -
ANSWER 6 vials×10 ml×50 mg/ml=3000 mg; 20 ml×10 mg/ml= 200 mg; 3000÷200=
answer: 15 vials
, 4
If a dog that receives fluids at a rate of 120 ml/hr has a rate reduction of 20%, what
would be the new rate in milliliters per hour? - ANSWER 20% of 120
ml/hr=0.2×120 ml/hr=24 ml/hr; 120 ml/hr−24 ml/hr=
answer: 96 ml/hr
A cat that weighs 5 kg is given 0.1 ml of a drug with a concentration of 10 mg/ml.
What dose did this cat receive? - ANSWER 0.1 ml÷5 kg×10 mg/ml=
answer: 0.2 mg/kg
You give 5 mg of a drug to a 10-kg animal. What is the dose of the drug in mg/kg? -
ANSWER 5 mg÷10 kg =
answer: 0.5 mg/kg
A bird that weighs 50 g requires a particular drug at 4 mg/kg divided twice a day.
What is the morning dose? - ANSWER 50 g÷1000 g/kg×4 mg/kg=0.2 mg÷2=
answer: 0.1 mg
How long will it take to give a whole blood transfusion of 60 ml at a rate of 2
ml/min? - ANSWER 60 ml÷2 ml/min÷60 min/hr=
answer: 1/2 hour
If a prescription calls for one tablet to be given for 3 days bid, then one tablet for 5
days sid, then one-half tablet given every other day for 2 weeks, how many tablets
should be dispensed? - ANSWER 6+5+(7×0.5)=
answer: 14.5
Fifty milliliters of a solution of 50% dextrose is added to a liter of 0.45% NaCl with
2.5% dextrose to yield a solution with a final dextrose concentration of what
percent? - ANSWER (500 mg/ml×50 ml)+(25 mg/ml×1000 ml)=(50,000 mg)/1050
L=47.6 mg/ml=
answer: 4.76%
A dog consumes five bowls of water in a 24-hour period. Each bowl contained
exactly 100 ml. If you collect 475 ml of urine over the same 24-hour period,
approximately how many milliliters constitute insensible loss? - ANSWER
500−475 =
answer: 25
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