wow I had two top-ups with my epi before they did the c/s and one time it never worked...I mean I didn't feel any different from the top up, and when they did the c/s it wasn't blocked completely because I felt what they were doing. I felt the initial incision and pulling of the abdomen, and I could walk within the 12 hours, go to the loo and other stuff...so maybe I only had a top-up of the epi and not a block? hmmmm....