Tayside Diabetes MCN Handbook - Preparation Prior to Procedures for People with Diabetes

General information

Avoid gassy foods prior to fast
Gassy foods include green vegetables/salads, fresh food, beans, fizzy drinks
Four hour fast prior to procedure
Free fluids (no milk) allowed to maintain hydration
Prevent hypoglycaemia in people prescribed oral hypoglycaemic agents and insulin
Monitor blood glucose and ensure appropriate treatments for hypoglycaemia are available

Continue all other tablets as usual until day of test
Discontinue Metformin 48 hours before procedure – see Radiological Procedures with Iodine Containing Contrast
Take other diabetes tablets (not metformin) with food prior to fast
Resume diabetes medication (not Metformin) as prescribed with food after procedure
See patient guidelines on restarting Metformin

Discontinue Metformin (if normally prescribed) 48 hours before procedure – see Radiological Procedures with Iodine Containing Contrast
See patient guidelines on restarting Metformin
Continue basal (long acting) insulin as prescribed for people with type 1 diabetes. Basal insulin preparations include Lantus, Levemir, Insulatard & Humulin I
May require reduction (30 – 50%) in insulin dose prior to fast to prevent hypoglycaemia
Resume normal prescribed insulin with food after procedure
If BD insulin regimen is restarted at lunchtime it is recommended that half of the normal ‘breakfast’ insulin dose should be prescribed with lunch after procedure

Four hour food fast prior to procedure (ideally)
Free fluids (avoiding milk) allowed
9.00 hr appointment desirable
Prevent hypoglycaemia in people prescribed oral hypoglycaemic agents and insulin
Monitor blood glucose and ensure appropriate treatments for hypoglycaemia are available

Continue basal insulin as prescribed for people with type 1 diabetes. Basal insulin preparations include Lantus, Levemir, Insulatard & Humulin I
May require reduction (30 – 50%) in insulin dose prior to fast to prevent hypoglycaemia
Resume normal prescribed insulin with food following procedure
If BD insulin regimen is restarted at lunchtime it is recommended that half of the normal ‘breakfast’ insulin dose should be prescribed with lunch after procedure

Discontinue Metformin 48 hours before procedure – see Radiological Procedures with Iodine Containing Contrast
Continue other diabetes medication
Withhold diuretics on morning of test
See patient guidelines on restarting Metformin

Discontinue Metformin (if prescribed) 48 hours before procedure – Radiological Procedures with Iodine Containing Contrast
Continue usual insulin regimen
Withhold diuretics on morning of test
See patient guidelines on restarting Metformin