Clinical Calculations
500 mL = ___ L
0.5
500 mg = ___ g
0.5
Order: Dexamethasone 10 mg, IV Supply: Dexamethasone 2 mg/mL How many mL would you administer?
10 mg / 2 mg = 5 mL
Fenbendazole is an antiparasitic drug used in the treatment of roundworms, hookworms, whipworms, and some species of tapeworms. For dogs, the dosage is 50 mg/kg po for 3 days. Fenbendazole is packaged in a 10% solution. How many mg/ml is there in a 10% solution?
10 mg?
How many milliliters of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% Dextrose solution?
100
Order: 2000 mL LRS and 2.5% Dextrose Supply: 2 containers 1000 mL LRS and 250 mL D50W How much dextrose would be used to create this solution?
100 mL
1 L = ___ mL
1000
1 gm = ___ mg
1000
3.5 fluid ounces = ___ mL
105
Fenbendazole is an antiparasitic drug used in the treatment of roundworms, hookworms, whipworms, and some species of tapeworms. For dogs, the dosage is 50 mg/kg po for 3 days. If the dog you are treating weighs 50 lbs, how many mg would be given to that patient with each dose of Fendbendazole?
1136 mg
If a dog receives fluids at a rate of 120 ml/hr, and has a rate reduction of 20%, what would be the new rate in milliliters per hour?
120 / 0.2 = 24 = 120 - 24 = 96
Order: 2000 mL LRS and 2.5% Dextrose Supply: 2 containers 1000 mL LRS and 250 mL D50W How much LRS would be used to create this solution?
1900 mL LRS
How many milligrams of a drug should be given to a patient weighing 22 lbs, if the dose is 0.2 mg/kg?
2
If the dose of a drug is 5 mg, how many doses are contained in 10 mg?
2
Doxycycline has been chosen as a treatment for a 1 kg Amazon parrot. The rate of administration is 25 mg/kg, bid, for 7 days. The tablets on hand are 50 mg (scored). How many tablets will be given for each treatment?
0.5
Order: Ketamine 50 mg, IM Supply: Ketamine 100 mg/mL How many mL would you administer?
0.5 mL
You administer 5 mg of a drug to a 10 kg patient. What is the dose of the drug in mg/kg?
0.5 mg / kg
Order: Soloxine 0.4 mg PO BID Supply: Soloxine 0.8 mg tablets If the tablets are scored in half, how many tablets would you administer to the patient with each dose?
0.5 tablet
2% Lidocaine is prescribed for a 13-lb Beagle at a dose of 2 mg/kg IV. How many milliliters will you deliver?
0.6
Order: Diazepam 3.5 mg, IM, Q6H, PRN Supply: Diazepam 10 mg/2 ml How many ml would you administer?
0.7 mL
Order: Gentocin 75 mg IV Supply: Gentocin 100 mg/mL How much Gentocin would be administered to the patient?
0.8 mL
Order: 1500 mL D(5)LR IV to run for 12 hours Drop Factor: 20 gtt / min When preparing to administer the above fluids to your patient, what would be your flow rate?
42 gtt / min
If a feline patient needs 472 ml of fluid, per day, what would the drip rate be if you are using a pediatric administration set to administer the IV fluids?
472 / 1440 (minutes in 24 hrs) = 0.3277 x 60 (drip rate) = 19.6666 or 20 gtt / min
1 tsp = ___ mL
5 mL
One gram of powdered drug diluted with how many milliliters of sterile water will make a concentration of 20 mg/mL?
50
A bird weighing 50 g requires a particular drug at 4 mg/kg divided BID. What is the A.M. dose?
50 g to kg = 0.05 kg = 0.05 x 4 = 0.2 / 2 = 0.1 mg
An adult dog, weighing 50 lb, needs maintenance fluids. Calculate the amount of fluids this dog will need per hour for a 24 hour period. (Use the maintenance fluid value of 50 ml/kg/day)
50 lb / 2.2 = 22.727 x 50 ml/kg/ = 1136.363 / 24 hr = 47.347
Macro-drip Sets
Deliver 10 - 20 drops / mL Used for >7kg
Micro-drip Sets (Pediatric)
Deliver 60 drops / mL Used for <7kg
15 drops / mL: (mL/hr) / 4 =
Drops / minute
60 drops / mL: (mL/hr) / 1 =
Drops / minute
10 drops / mL: (mL/hr) / 6 =
Drops /minute
20 drops / mL: (mL/hr) / 3 =
Drops per minute
You will need to deworm 100 head of cattle with a pour-on product that is applied at a rate of 1 mL / 100 lb. This product is only sold in 250-mL bottles. The cattle will weigh 825 to 1050 lbs each. Approximately how many bottles of dewormer should you purchase?
4
68 kg = ___ lbs
149.6
If a prescription calls for one tablet to be given BID for 3 days, then one tablet SID for 5 days, then ½ tablet every other day for 2 weeks, how many tablets should be dispensed?
15
Order: Potassium Chloride 30 mEq added to 100 mL IV fluids Supply: 30 mL vial Potassium Chloride 2 mEq / mL Calculate the amount of Potassium Chloride that should be added to the 1000 mL IV bag to create the solution
15 mL
0.5 g = ___ mg
500
7.6 quarts are equal to how many pints?
15.2
1.5 kg = ___ g
1500
What would be the drip rate, per second, for 6 units of insulin (100 units/ml) administered over a 2-hour period using a 60-gtt/ml administration set?
not .5 or 1 ********
The order is 500 mg of Amoxicillin, and the tablets on hand are 250 mg. How many tablets will be administered?
Two 250 mg Amoxicillin tablets
Your patient is a 42-lb Shepherd cross with a history of vomiting. The order reads: Metoclopramide HCl (5 mg/ml) 0.3 mg/kg IM q6h prn. How many milliliters will you deliver?
1
Your patient is a 42-lbs shepherd cross with a history of vomiting. The order reads: Metoclopramide HCL (5 mg/mL) 0.3 mg/kg IM Q6H PRN. How many milliliters will you deliver?
1
Order: Cefatabs 100 mg PO, BID Supply: Cefatabs 0.1 g tablets How many tablets would be administered with each dose?
1 tablet
What is the fluid deficit for a 20-lb dog with 7% dehydration?
20 lb x (1 kg / 2.2 lbs) = 9.0909 x 0.07 = 0.636 L, or 636 mL
A 75-lbs 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?
1 teaspoon
How much water would you add to a 5g vial of drug powder to make a 2.5% solution?
200 mL
To make a solution with a concentration of 15 mg/mL, how many milliliters of sterile water should be added to 30g of powdered drug?
2000
An adult cat, weighing 14 lbs, is estimated to be 3% dehydrated is presented to the clinic. Calculate the replacement fluid volume and select the most appropriate volume for this patient.
210 mL fluid for day 1
If you have a total of 86g of medicine, and each dose of medicine is 400 mg, how many doses do you have?
215
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?
0.2 mg / kg
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?
0.2 mg/kg
The veterinarian orders Gentamycin 10 mg IM bid. The medication available is Gentamycin 40 mg/ml. How much Gentamycin should be administered to the patient with each dose?
0.25 mL
If one dose is 0.005 g, how many doses (in mg) are in each 100 mg of medicine?
(0.005 x 1000) = 5 = 100 / 5 = 20
A 78 lbs dog is to be administered ampicillin at a dose of 5 mg/lbs SC. The antibiotic has been reconstituted, and the concentration is 200 mg/mL. How many milliliters will be administered to this patient?
(78 lb x 5 mg) / 200 = 1.95 or 2 mL
A cockatiel needs 100 mg/kg piperacillin, IM. If the bird weighs 80 g and the concentration of piperacillin is 100 mg/ml, how many milliliters should be given?
0.08
A rabbit needs 300 µg/kg of a 1% ivermectin solution. If the rabbit weights 8 lbs, how man milliliters of ivermectin should be given?
0.1
You have just administered an injection of 0.02 mL of Acepromazine (10 mg/mL). How many milligrams did you give?
0.2
15 gtt = ___ mL
1 mL
Order: Antirobe 25 mg, PO, TID Supply: Antirobe Suspension 25 mg / mL How many mL would you administer?
1 mL
Order: Antirobe 25 mg, PO, TID Supply: Antirobe Suspension 25 mg/ml How many mL would you administer?
1 mL
The veterinarian orders Phenylbutazone to be administered to a 1500 lb horse at a dose of 5 mg / kg IV. The vial is labeled 200 mg/mL. How many milliliters will be administered?
17
The veterinarian orders phenylbutazone to be administered to a 1500 lb horse at a dose of 5 mg/kg IV. The vial is labeled 200 mg/ml. How many milliliters will be administered?
17
The dose of a drug is 0.05 mg per kg of body weight. How many mcg should be given to a cat weighing 17.6 kg?
17.6 x 0.05 = 0.88 = 880 mcg
20 gtt = ___ mL
1.3 mL
Translate 1:70 into a percent
1.4%
The order is 15 mg of Prednisone, and 10-mg (scored) tablets are on hand. How many tablets will be administered?
1.5 - 10 mg Prednisone tablets
Order: Gentamycin 60 mg, IM, Q8H Supply: Gentamycin 80 mg / 2 mL How many mL would you administer?
1.5 mL
The veterinarian orders 15 mg of Vitamin K. The vial is labeled 10 mg/ml. How many milliliters will be administered?
1.5 mL
ORDER: Lasix 60 mg po qd SUPPLY: Lasix 40 mg tablets How many tablets would be administered with each dose?
1.5 tablets
How many tablets would you dispense for a 1-month supply of a drug with a dose of one and one-half tablets 3 times daily?
1.5 x 3 = 4.5 x 30 = 135 tablet
0.01 g = ___ mg
10
A 78-lb dog is to be administered Ampicillin trihydrate at a dose of 5 mg/lb SC. The antibiotic has been reconstituted, and the concentration is 200 mg/ml. How many milliliters will be administered to the patient?
2 mL
The veterinarian prescribes Albon for a patient that has been diagnosed with Coccidia. Your patient is a puppy weighing 8 lbs and will need treatment for 21 days. The loading dose for Albon is 25 mg/lb and the maintenance does is 12.5 mg/lb and should be given SID. The drug is supplied at 250 mg/5 ml. How many milliliters will your patient receive for each maintenance dose?
2 mL
2500 mL = ___ L
2.5
The concentration of Furosemide is 5%. How many milligrams are in 0.5 ml?
25
You give a dog 5 bowls of water in a 24-hour period. Each bowl contains exactly 100 ml. If you collect 475 ml of urine over the same 24-hour period, approximately how many milliliters constitute insensible loss?
25
What drip rate should be used to deliver (over a 24-hour period) 2500 ml, to a 50 lb dog, using a standard IV administration set?
2500 / 50 = 50 - 24 (hrs) = 26 gtt / minute
3 qt = ___ L
3
6 T = ___ ounces
3
A patient requires 3 units of insulin every twelve hours. If the concentration of insulin is 100 units / mL, how many milliliters should be given?
3 / 100 = 0.03 mL
How much bleach would be used to prepare 1000 ml of a 1:32 solution?
31.25 mL
Approximately how many ounces of bleach diluted with water make 1 gallon of a 30% bleach solution? (Remember 1 quart = 32 oz)
38
A horse with colic is to receive 35 L of fluids over a 24 hour period. How long will a 5 L bag of fluids last for this patient?
3.4 hours
A 5% Dextrose solution is diluted with sterile water. The volume of the sterile water added is 40% of the volume of dextrose. What is approximately the new dextrose concentration?
3.6%
The veterinarian prescribes Albon for Coccidia. Your patient is a puppy weighing 8 lbs. The loading dose for Albon is 25 mg/lb and the drug is supplied in a concentration of 250 mg / 5 mL. How many milliliters will be given to the puppy?
4 mL
You have an injectable calcium solution that is 30 mg/ml. How much do you add to 1 liter of LRS to deliver 4 mg/hr Calcium at a rate of 30 ml/hr?
4 mg / hr at 30 mL / hr = 40 mg / 30 mL = 133.3 mg / 1000 mL; 133.3 mg / 30 mg/mL = 4.4
Order: Baytril 20 mg PO BID Supply: Baytril 5 mg tablets How many tablets do you administer to the patient for one dose?
4 tablets BID
If the medical order is 0.5 L of 0.9% Sodium Chloride, how many milliliters would be administered?
500 mL
What drip rate would you use to deliver 500 ml of LRS over a 3 hour period with a standard administration set (15 gtt/ml)?
500 mL / 3 hr = 166.67 x gtt per min = 2500 / 60 min = 41.667 or 42 gtt / min
The level of fluid in the liter IV gab reads halfway between the 4 and 5 mark. How much fluid REMAINS in the bag?
550 mL
Six 12-oz puppies need deworming medication. If the dose is 1 mL / lb, how many milliliters would you dispense?
4.5
The dose of a drug is 1 mg per kg of body weight. How many mg should be given to a rabbit weighing 10 pounds?
4.5 mg
The dose of a drug is 1mg per kg of body weight. How many mg should be given to a rabbit weighting 10 pounds?
4.5 mg
3 ounces = ___ T
6
A prescription in which 3 cc of lactulose is given orally, BID, will require how many ounces to last at least 30 days?
6
What drip rate would you use to administer 120 ml of 0.9% NaCl over a 2-hour period using a microdrip IV administration set (60 gtt/ml)?
60 gtt / minute
6 L = ___ mL
6000
7.5 cc = ___ mL
7.5
If the level of fluid in a liter fluid bag reads at the 700 mark. How much fluid has been administered to the patient?
700 mL
0.25 L = ___ oz
8
How many grams of Sodium Chloride are needed to make 1 L of 0.9% Sodium Chloride?
9 g
A prescription reads: Sig: 2 tab Q4H PO PRN until gone. This is interpreted as:
Instructions: 2 tablets to be taken every four hours by mouth, as needed, until all tablets are gone
