Glucoseinsulin infusion

(1) Give normal insulin on the night before the operation

(2) Begin an infusion of 10% dextrose containing 20 mmol/l potassium chloride and soluble insulin 15 units/l. Run it at a rate appropriate to the patient's fluid requirements, usually 100ml/h. Adjust insulin dose as follows

Blood glucose

Soluble insulin infusion

< 4 mmol/l


4-10 mmol/l


10-15 mmol/l


15-20 mmol/l


> 20 mmol/l


Blood glucose is measured two hourly until stable, then six hourly insulin before the operation, using one of the regimens described on the previous page.

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