FREE NMC-CBT Drug Calculations and Numeracy Questions and Answers

Question 1

A patient is prescribed 1 litre of Normal Saline to be infused over 8 hours. The giving set has a drop factor of 20 drops/mL. At what rate should the infusion be set in drops per minute (gtt/min)?

Accepted Answer

42 gtt/min

Answer

21 gtt/min

Answer

35 gtt/min

Answer

50 gtt/min

Question 2

A patient is prescribed 120 mg of paracetamol suspension. The stock available is 250 mg in 5 mL. What volume in mL should you administer?

Accepted Answer

2.4 mL

Answer

2.0 mL

Answer

4.8 mL

Answer

5.2 mL

Question 3

An infusion pump must be set to deliver 500 mg of an antibiotic in 100 mL of fluid over 30 minutes. What rate should the pump be set to in mL/hour?

Accepted Answer

200 mL/hr

Answer

50 mL/hr

Answer

100 mL/hr

Answer

150 mL/hr

Question 4

A patient is prescribed 0.5 g of amoxicillin. The tablets available are 250 mg. How many tablets should be administered?

Accepted Answer

2 tablets

Answer

0.5 tablets

Answer

1 tablet

Answer

4 tablets

Question 5

A patient weighing 72 kg is prescribed a drug at a dose of 5 mg per kg. What is the total dose required in mg?

Accepted Answer

360 mg

Answer

14.4 mg

Answer

77 mg

Answer

720 mg

Question 6

You need to administer 30 mg of a drug that is available as a 50 mg/2 mL solution. What volume in mL do you need to draw up?

Accepted Answer

1.2 mL

Answer

0.6 mL

Answer

1.5 mL

Answer

3.3 mL

A patient is prescribed 1 litre of Normal Saline to be infused over 8 hours.The giving set has a drop factor of 20 drops/mL.At what rate should the infusion be set in drops per minute (gtt/min)?

A patient is prescribed 1 litre of Normal Saline to be infused over 8 hours.
The giving set has a drop factor of 20 drops/mL.
At what rate should the infusion be set in drops per minute (gtt/min)?