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Related : Drug dosage calculations #1 - answers with explanation

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1. A drug 150g is prescribed it is available as 5 g tablets. How many tablets need to be administered?

• 7.5 tablets
• 22 tablets
• 35 tablets
• 30 tablets

2. Calculate the flow rate if 1.2L is to be infused over 24 hours.

• 72 ml/hr
• 28.8 ml/hr
• 50 ml/hr
• 20 ml/hr

3. A dose of 100 ml of injection Metronidazole is to be infused over half an hour. How much amount of the medicine will be given in an hour?

• 50 ml
• 150 ml
• 200 ml
• 300 ml

4. A patient is prescribed 3g of sulphadiazine, the stock contains 600mg/5mL. How much stock should be given to the patient?

• 18 ml
• 15 ml
• 25 ml
• 2 ml

5. You have 1 gram of drug in 20 ml of fluid. What is the concentration in mg/ml?

• 5 mg/ml
• 40 mg/ml
• 50 mg/ml
• 20 mg/ml

6. A solution contains 12.5 g of glucose in 0.25 L; what is the percentage concentration (%) of this solution?

• 5%
• 10%
• 15%
• 20%

7. A child requires 50 milligrams of Phenobarbitone. If stock ampoules contain 200 milligrams in 2mL, how much will you draw up?

• 0.7ml
• 55.55ml
• 0.8ml
• 0.5ml

8. A litre bag of 5% Glucose is prescribed over 4 hours. If a standard giving set is used, at what rate should the drip be set?

• 83
• 60
• 24
• 20

9. An infusion of 24 mg of Inj. Furosemide is ordered for 12 hrs. How much dose is infused in an hour?

• 4 mg/hr
• 2 mg/hr
• 3 mg/hr
• 1 mg/hr

10. The doctor prescribes 25mg of a drug to be given by injection. It is a drug dispensed in a solution of strength 50mg/ml. How many ml should you administer?

• 2ml
• 1.5 ml
• 0.5 ml
• 1ml

11. A doctor prescribes an injection of 200 micrograms of drug. The stock bottle contains 1mg/ml. How many ml will you administer? Bear in mind: The 2 dose values must be in the same unit 1mg=1000mcg , 200mcg=0.2mgthen doseprescribed:dose/ml –0.2:1=0.2

• 20 ml
• 2 ml
• 0.2 ml
• 0.1 ml

12. An infusion is to run for 30 minutes and is to deliver 200mL. What is the rate of the infusion in mL/h?

• 600 ml/hr
• 400 ml/hr
• 200 ml/hr
• 800 ml/hr

13. 500mg of Amoxicillin is prescribed to a patient three times a day, 250mg tablets are available. How many tablets for single dose?

• 6
• 4
• 2
• 8

14. How much is drawn from a patient ordered an injection of 80mg of pethidine? Each stock ampoule contains 100mg per 1 mL.

• 0.8ml
• 8ml
• 40ml
• 12.5ml

15. An injection of fentanyl 225 micrograms is prescribed. Stock on hand is 500 micrograms in 2ml. What volume of stock should be given?

• 4.4ml
• 0.9ml
• 1.3ml
• 1.4ml

16. 500ml is to infuse over a 5 hour period. Find the flow rate in mL/h.

• 250 ml/hr
• 25 ml/hr
• 1000 ml/hr
• 100 ml/hr

17. 500 mg of amoxicillin powder is dissolved in 25 ml of water. What is the concentration in mg/ml?

• 20 mg/ml
• 2 mg/ml
• 5 mg/ml
• 55.55 mg/ml

18. Paracetamol 1gm is ordered. It is available as 500mg. How many tablets need to be administered?

• 1 tablets
• 4 tablets
• 2.5 tablets
• 2 tablets

19. Mr Bond is to receive 800mL of an antibiotic via an IV infusion over 15 hours. Calculate the flow rate to be set.

• 53.3 ml/hr
• 55.55 ml/hr
• 67 ml/hr
• 25 ml/hr

20. Doctor order: ¼ L of D%W to infuse over 2 hr 45 min; Drop factor: 60 gtt/mL. How many gtt/min will you regulate the IV?

• 91 gtt/min
• 96 gtt/min
• 125 gtt/min
• 142 gtt/min

21. What volume is required for the injection if a patient is ordered 500mg of capreomycin sulphate, & each stock ampoules contains 300mg/mL?

• 0.7ml
• 1.7ml
• 0.8ml
• 0.5ml

22. A patient with burns is given anesthesia using 50% oxygen and 50% nitrous oxide to reduce pain during dressing. How long this gas is to be inhaled to be more effective?

• 30 sec
• 60sec
• 1-2min
• 3-5min

23. Mr Smith will require 10 mgs of oromorph. The stock comes in 5 mg/2ml. How much will you draw up from the bottle?

• 4 ml
• 10 ml
• 6 ml
• 8 ml

24. The doctor prescribes a dose of 9 mg of an anticoagulant for a patient being treated for thrombosis. The drug is being supplied in 3mg tablets. How many tablets should you administer?

• 3 tablets
• 1.5 tablets
• 6 tablets
• 2.5 tablets

25. A drug 8.25mg is ordered, it is available as 2.75mg. Calculate the dose.

• 2.5 tablets
• 5.5 tablets
• 0.3 tablets
• 3 tablets

26. Over a period of 9 hours a patient is to receive half a litre of dextrose 4% in 1/5 normal saline via a volumetric infusion pump. At what flow rate should the pump be set?

• 180ml
• 36ml
• 55.55ml
• 50.5ml

27. You need to give 40mg tablet, available is 2.5mg tablets. How much tablets will you give?

• 16 tablets
• 100 tablets
• 12 tablets
• 10 tablets

28. 1000 mg dose to be given thrice a day. 250 mg tabs available. No. of tabs in single dose?

• 2.5 tablets
• 2 tablets
• 4 tablets
• 8 tablets

29. If 1000mg of chloramphenicol is given & stock on hand contains 250mg/10mL in suspension, calculate the volume required.

• 50 ml
• 25 ml
• 10 ml
• 40 ml

30. 900mg of penicillin is to be given orally. Stock mixture contains 250mg/5ml. Calculate the volume of mixture to be given.

• 36ml
• 3.6ml
• 18ml
• 48ml

31. A doctor prescribes an injection of 200 micrograms of drug. The stock bottle contains 1mg/ml. How many ml will you administer?

• 20 ml
• 2 ml
• 0.2 ml
• 0.1 ml

32. A patient needs 5000mg of medication. Stock solution contains 1g per 1mL. What volume is required?

• 5ml
• 0.5 ml
• 0.55 ml
• 5.5 ml

33. 2.5 mg tablet. 5 mg to be given. How many tablets to be given?

• 2 tablets
• 1 tablets
• 3 tablets
• 1.5 tablets

34. A syringe contains 20 mg of morphine in 4 ml. What is the concentration in mg/ml

• 8 mg/ml
• 5 mg/ml
• 16 mg/ml
• 4 mg/ml

35. An order states that 500mL albumin 5% is to be given in 4 hours. What is the flow rate that should be set?

• 25 ml/hr
• 400 ml/hr
• 50 ml/hr
• 125 ml/hr

36. A patient requires 0.2 mg of 1 in 1000 mg adrenaline. How many ml do you give?

• 5 ml
• 2 ml
• 0.5 ml
• 0.2 ml