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NMC-CBT Drug Calculations and Numeracy Flashcards

7 cards from real NMC CBT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 NMC-CBT Drug Calculations and Numeracy flashcards as text

  1. A patient requires 750 micrograms of digoxin. Tablets available are 250 micrograms each. How many tablets should be administered?

    Answer: 3 tablets

    750 ÷ 250 = 3 tablets.

  2. An IV infusion of 500 mL must run over 4 hours using a standard giving set (20 drops/mL). What is the drip rate in drops per minute?

    Answer: 42 drops/min

    (500 × 20) ÷ (4 × 60) = 10000 ÷ 240 ≈ 41.7, rounded to 42 drops/min.

  3. A child weighing 20 kg requires amoxicillin at 25 mg/kg/day in 3 divided doses. What is the dose per administration?

    Answer: 167 mg

    (20 × 25) ÷ 3 = 500 ÷ 3 ≈ 166.7 mg, rounded to 167 mg.

  4. Heparin 25,000 units is added to 250 mL of 0.9% saline. The infusion runs at 20 mL/hour. How many units per hour does the patient receive?

    Answer: 2,000 units/hr

    Concentration = 25,000 ÷ 250 = 100 units/mL; 100 × 20 = 2,000 units/hr.

  5. A patient is prescribed morphine 15 mg orally. The syrup available is 10 mg/5 mL. How many mL should be given?

    Answer: 7.5 mL

    (15 ÷ 10) × 5 = 7.5 mL using the formula: required ÷ stock × volume.

  6. A nurse needs to prepare a 1:1000 adrenaline solution. What concentration does this represent in mg/mL?

    Answer: 1 mg/mL

    1:1000 means 1 g in 1000 mL = 1000 mg in 1000 mL = 1 mg/mL.

  7. A patient's urine output over 8 hours was 360 mL. What is the hourly urine output?

    Answer: 45 mL/hr

    360 ÷ 8 = 45 mL/hr.