Look up the medical definition of Clinical Death. Someone was pulling your leg (or you're pulling ours) when you state you were clinically dead for 40 minutes. 40 seconds is possible but definitely not 40 minutes.
speters wrote:
I was once pronounced clinical dead after an accident many, many years ago, according to records I stayed that way for almost 40 min. before showing signs of life (pulse) again. But that doesn't count as an experience, because I can't remember a thing, cause I was out. But I'm curious what others have to say.