Hi Rich
i was told to fast from midnight before an op that was scheduled for 9 am. No other instruction.
I am not sure what part of the word fasting I didn’t understand but the following morning when there was a delay in my admission due to bed crisis, I drank some water (300 ml or so). When I told the preop nurse this she went ballistic but fortunately I was allowed to continue and the op went ahead at 12 or so.
Fasting means both food and water (note to self!)
But nothing was said to me about low residue. I don’t know if they give you enema beforehand but I wasn’t conscious for it if so!