NMC CBT NMC-CBT Drug Calculations and Numeracy 3

Question 1

A patient requires dopamine at 5 mcg/kg/min. The patient weighs 70 kg. Dopamine 400 mg is in 250 mL of dextrose. What is the infusion rate in mL/hr?

Accepted Answer

13.1 mL/hr

Answer

16.4 mL/hr

Answer

10.5 mL/hr

Answer

20.0 mL/hr

Question 2

A patient receives 1 litre of Hartmann's solution over 8 hours via a burette (60 drops/mL). What is the drip rate?

Accepted Answer

125 drops/min

Answer

100 drops/min

Answer

115 drops/min

Answer

130 drops/min

Question 3

Warfarin 3.5 mg is prescribed. Tablets come in 0.5 mg and 5 mg strengths. What is the most appropriate combination?

Accepted Answer

Seven 0.5 mg tablets

Answer

One 5 mg and three 0.5 mg tablets — take the 5 mg only

Answer

One 5 mg tablet minus 0.5 mg = do not use

Answer

One 0.5 mg tablet and one 5 mg tablet is too much

Question 4

A patient is prescribed gentamicin 5 mg/kg as a single daily dose. The patient weighs 85 kg. Available is gentamicin 80 mg/2 mL. How many mL are required?

Accepted Answer

10.6 mL

Answer

8.5 mL

Answer

12.8 mL

Answer

5.3 mL

Question 5

Convert 0.05 grams to micrograms.

Accepted Answer

50,000 mcg

Answer

500 mcg

Answer

5,000 mcg

Answer

500,000 mcg

Question 6

An insulin infusion runs at 4 units/hr. The syringe contains 50 units of insulin in 50 mL of 0.9% saline. At what rate (mL/hr) should the pump be set?

Accepted Answer

4 mL/hr

Answer

2 mL/hr

Answer

8 mL/hr

Answer

1 mL/hr

Question 7

A nurse draws up 0.4 mL from an ampoule of atropine 600 mcg/mL. How many micrograms has she prepared?

Accepted Answer

240 mcg

Answer

150 mcg

Answer

200 mcg

Answer

300 mcg