ATI DOSAGE CALCULATIONS – 100% CORRECT SOLUTION GUIDE

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DOSAGE CALCULATION PRACTICE PROBLEMS

1. The order is to give 60 mg of Garamycin (gentamicin) IM every 8hr. The vial is

labeled 80 mg/ 2 mL. How many mL will you give?_______________

? mL = 2mL/80 mg X 60 mg/(1) = 12/8 = 1.5 mL

2. The patient is to receive 65 Units of a drug. The vial is labeled 50 Units per 2 mL.

How many mL will you give?__________

? mL = 2 mL/50 units X 65 units/(1) = 130/50 = 2.6 mL

3.The patient is to receive 0.6 g of a drug. How many mg will you give?__________

? mg = 1000 mg/1 g X 0.6 g/(1) = 600/1 = 600 mg

4.The patient received 400 mL of fluid. How many L did she receive?__________

? L = 1 L/1000 mL X 400 mL/(fluid) = 4/10 = 0.4 L

6.The patient weighs 160 pounds. How many Kg does he weigh?__________

? kg = 1 kg/2.2 lbs X 160 lbs/(patient) = 160/2.2 = 72.7 kg

8.The patient is to receive 50 mg of a drug. How many g will you give? ________

? g = 1 g/1000 mg X 50 mg/(drug) = 5/100 = 0.05 g

9.The physician has ordered 300 mg of a drug. The vial is labeled 150 mg / 2 mL.

How many mL will you give?__________

? mL = 2 mL/150 mg X 300 mg/(some drug) = 60/15 = 4 mL

10. If the patient receives 45 mL of a drug, How many ounces does he

receive?__________

? ozs = 1 oz/30 mL X 45 mL/(drug) = 45/30 = 1.5 oz

11. You have an order to give 120 Units of Vitamin D. If the vitamin comes in

capsules containing 60 Units, how many capsules will you give?__________

? caps = 1 cap/60 units X 120 units/(Vit.D) = 12/6= 2 capsules

12. The patient is to receive 450 mg of an antibiotic. The vial contains a powder to be

, reconstituted. The label of the vial reads: Kefzol (cefazolin) 1 g. To reconstitute:

Add 2.5 mL sterile water for injection to provide a volume of 3mL. How many

mL of solution are needed to provide the patient with the prescribed

dose?__________

? mL = 3 mL/1 g X 1 g/1000 mg X 450 mg/(some ABX) = 135/100 = 1.4 mL

13. You have an order of 5 mg / kg dose of medication for a patient weighing 22

pounds. How many mg will you give?__________

? mg = 5 mg/kg X 1 kg/2.2 lbs X 22 lbs/(patient) = 110/2.2 = 50 mg

15. The doctor orders 5 mg of Valium (diazepam) for the patient. The vial reads:

20 mg per 2 mL How many mL will you give?__________

? mL = 2 mL/20 mg X 5 mg/(Valium) = 10/20 = 0.5 mL

16. The patient is to receive 500 mL of D5W over 6 hours . What is the drip rate per

minute if the tubing provides 12 gtts per mL?__________

? gtts/min = 12 gtts/1 mL X 500 mL/6 hrs X 1 hr/60 mins = 600/36 = 16.7 = 17 gtts/min

17. The patient is to be given 20 units of a drug. The vial is labeled 50 units/ 2 mL.

How many mL will you give?__________

? mL = 2 mL/50 units X 20 units/(drug) = 4/5 = 0.8 mL

18. The patient has an order for 1.2 g of a drug. How many mg will you give?

__________

? mg = 1000 mg X 1.2 g/(drug) = 1200/1 = 1200 mg

20. The patient is to receive 40 mg of a drug in 50 mL of NS (Sodium Chloride) over

one half hour. What is the drip rate per minute if the tubing provides 15 gtts per

ml?_________

? gtts/min = 15 gtts/1 mL X 50 mL/30 mins = 75/3 = 25 gtts/min

21. The patient has Demerol 75 mg ordered. for complaint of pain. The drug is