I have had type 1 diabetes for 67 years and have enjoyed essentially normal blood glucose levels since the availability of the first blood glucose meter in 1969. As a result I do not have the premorbid conditions frequently associated with diabetic patients who undergo surgery. Nevertheless, on entering a hospital I am at great risk for iatrogenic hypoglycemia and ketoacidosis (DKA).
About 2 years ago I was scheduled for a minor, 2-hour surgical procedure while under general anesthesia. The hospital was a world-famous institution associated with a major federally funded diabetes center. I had given my surgeon detailed printed instructions for maintenance of my blood glucose level during the perioperative period. He agreed with them and promised they would be followed.
Bernstein RK. More Can Be Life Threatening. JAMA Intern Med. 2014;174(6):858. doi:10.1001/jamainternmed.2014.1229