Here's what we recommend for folks in our clinic:
1. For people with Type 2 Diabetes:
A. Ask your diabetes care provider what to do with your diabetes medications (some
medications may need to be adjusted or held temporarily).
B. During the bowel prep if your blood sugar is normal (below 130) then take fluids with
carbohydrates in them. If your blood sugar is high (above 130), then take fluids that
do not contain carbohydrates - such as water.
2. For people with Type 1 Diabetes: Drink fluids which contain carbohydrates to prevent
DKA (Diabetic Ketoacidoses). Do not cover for these carbohydrates on the day of the
prep and do blood sugar corrections on the day of the prep and the colonoscopy only
if your blood sugar is above 150mg/dl.
A. If you are on an insulin pump: We recommend that you keep your pump on during the
colonoscopy prep and the day of the procedure. Continue your usual basal rates the
entire time.
Remind the staff that you are on an insulin pump. Do not expose your pump to X-rays.
B. If you are on insulin shots: ask your diabetes care provider what to do with the doses
(they will probably need to be reduced). You will still need at least a small dose of long
acting insulin.
3. For ALL individual with diabetes (any type): call your diabetes provider if you have any
questions or problems with your blood sugar running too high or too low.
We usually recommend 45-60 grams of carbohydrate from fluids every 2-4 hours, approximating meal times. Of course, this is adjusted based on blood sugar levels. I'm interested in hearing what other practices recommend.