My melodramatic fear: The the brain impulses and patterns that comprise your soul are snuffed out during general anesthesia. The new soul that takes rood in y

My melodramatic fear: The the brain impulses and patterns that comprise your soul are snuffed out during general anesthesia. The new soul that takes rood in your brain will have access to your old memories but is a new set of patterns that only approximate the previous soul. This new soul, of course, will claim to be you in order to preserve itself. Unless primed with the memory of this idea, the new soul won't know any better.