A 28-year-old man with type 1 diabetes uses a continuous subcutaneous insulin infusion. He develops nausea after the pump gives an occlusion alarm; his blood glucose concentration is 15.6 mmol/L and blood ketones are 2.8 mmol/L. He has no fever, is haemodynamically stable and has no alternate source of insulin available through the pump. Which one of the following is the most appropriate immediate action?
Keep going — a set of ten like this one, one at a time.
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