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

Net balance = intake minus output = 800 − 500 = +300 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

1 g = 2 tablets; QDS = 4 times daily; 2 × 4 × 5 = 40 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

24 mL ÷ 24 hr = 1 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

12.5 × 1.6 = 20 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

Concentration = 40 mmol ÷ 1000 mL = 0.04 mmol/mL; max rate = 10 ÷ 0.04 = 250 mL/hr.

(NMC CBT) Nursing and Midwifery Council Computer-Based Test Practice Test

(NMC CBT) Nursing and Midwifery Council Computer-Based Test Practice Test

NMC CBT NMC-CBT Drug Calculations and Numeracy 4