... and the next thing I remember I was looking at the clock back on the ward which was saying 9:20, and a nurse was telling me to turn over onto my left side to have a bit more sleep.

After another 30-ish minutes peaceful sleep I was wide awake, and slightly disconcerted that I'd completely lost 50 minutes. I honestly couldn't remember a thing after watching the 3rd injection into my IV. Okay, so I'm really pleased about that, as I really wasn't looking forward to a long tube being pushed down my throat into my stomach anyway, but all the same, they could have removed a kidney and I wouldn't have noticed.