I was an internist working as a Hospitalist ( I only took care of hospitalized patients) for a few years at a large tertiary cardio thoracic surgery hospital. I cared for many diabetic patients postop from various open heart procedures. Expect your insulin doses to change, you may even be placed on an iv insulin drip, depending on your needs. Your sugars will be closely monitored and you will probably be on more short acting insulin than you are used to. I fully expect your surgeon to consult with an internist, intensivist, or endocrinologist. If you have good nurses and good consultants you will be in good hands. Make sure to ask the nurses what your sugars are when they test (when your feeling up to it) and if you don’t feel your getting good sugar control, don’t be shy about asking for an endocrinologist if you don’t have one.

I hope this puts your mind at ease.