I passed out and had heart palpitations for four hours until I finally fell asleep. The er Dr told me it was from dehydration. Is that possible? Heart palpitations seems extreme for dehydration. I've been WAY more dehydrated in my life than I was the day I passed out.
Yes it's possible. You can die from being dehydrated. Your individual symptoms would vary from week to week depending upon general nutritional state, activity level, hormone levels, etc.