I've only had one operation and there was lots of scope for infection and poor healing, because I was knocked off my bike by a car door, resulting in 9cm gash in my upper arm, with flecks of paint left behind, and 36 hours between injury and operation to clean & close. I didn't have any problems, due to good blood glucose control and good general physical fitness. I also reminded nursing staff that nil by mouth didn't mean that I needed to miss antibiotics. I was a bit concerned about general anaesthetic etc, as I'd never had one in my previous 35 odd years, 30 before diabetes, but was fine. In fact, I'm currently waiting to see surgeon about repairing damage suffered 3 months ago when I fell down a cattle grid when running in the dark (not really accident prone honestly - you should see some of the places I've run, trekked, biked, kayaked etc with no injuries) - getting very irritated by not being able to run, and can only just walk and cycle. At least I know I can get through a general anasthethic with no problems - and wake starving!