I had a minor op about 18 months ago. Straight afterwards my eyesight was blurry for a couple of hours and I had a metallic taste in my mouth. Nurses seemed a bit confused by it and since it went after a few hours they sent me home that day and all was fine. Post op notes said no complications. However I was talking to a friend last night who is a nurse and it came up in conversation. She said oh that means you got too much anaesthetic. I looked it up and metallic taste is a fairly big anaesthetic 'overdose'. I feel a bit anxious about it now. I need to have another op in the next year (a much more major one) and I was already worried about it. I'm obese anyway (bmi 35) so I worry about the extra risks.