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Type 1 diabetes sick-day ketones — GPhC CRA MCQ

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HardEndocrine TherapeuticsType 1 diabetes sick-day ketonesGPhC CRA

A person uses 1 unit of insulin aspart per 10 g carbohydrate and 1 unit lowers glucose by 3 mmol/L. Lunch contains 60 g carbohydrate; glucose is 13 mmol/L and target is 7 mmol/L. What dose is calculated?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: B — Eight units: six for carbohydrate and two for correction

The meal component is 60 ÷ 10 = 6 units. The correction component is (13 − 7) ÷ 3 = 2 units. The calculated total is therefore 8 units, subject to the person’s agreed plan, active insulin, exercise, illness and hypoglycaemia risk.

Reference: BNF: insulin aspart: https://bnf.nice.org.uk/drugs/insulin-aspart/