NMC CBT NMC-CBT Drug Calculations and Numeracy 4

Question 1

A patient has a fluid balance of +800 mL intake and -500 mL output over 24 hours. What is the net fluid balance?

Accepted Answer

+300 mL

Answer

-300 mL

Answer

+1300 mL

Answer

-800 mL

Question 2

A prescription reads: paracetamol 1 g QDS for 5 days. How many 500 mg tablets are needed in total?

Accepted Answer

40 tablets

Answer

20 tablets

Answer

30 tablets

Answer

80 tablets

Question 3

A syringe driver is set to deliver 24 mL over 24 hours. How many mL per hour does the patient receive?

Accepted Answer

1 mL/hr

Answer

0.5 mL/hr

Answer

2 mL/hr

Answer

4 mL/hr

Question 4

Methotrexate is prescribed at 12.5 mg/m² for a patient with a body surface area of 1.6 m². What is the total dose?

Accepted Answer

20 mg

Answer

18 mg

Answer

22 mg

Answer

25 mg

Question 5

A nurse prepares an IV infusion of potassium chloride. The maximum recommended IV rate is 10 mmol/hr. If a bag contains 40 mmol in 1000 mL, what is the maximum safe flow rate in mL/hr?

Accepted Answer

250 mL/hr

Answer

100 mL/hr

Answer

400 mL/hr

Answer

200 mL/hr

Question 6

A patient's BMI is calculated as weight (kg) divided by height (m) squared. A patient weighs 80 kg and is 1.6 m tall. What is their BMI?

Accepted Answer

31.25

Answer

27.5

Answer

25.0

Answer

30.0

Question 7

A patient requires 500 mg of co-amoxiclav. Available tablets are 250/125 mg (co-amoxiclav ratio). How many tablets are needed to deliver 500 mg of amoxicillin component?

Accepted Answer

2 tablets

Answer

1 tablet

Answer

3 tablets

Answer

4 tablets