I can't remember the diagrams exactly but say in a heart attack the heart swells and is more like a ball shape. With a broken heart it elongates.
I believe extreme shock can do a lot. I thought I won $5000 on a scratch lottery ticket once and I almost had a full on panic attack. Paul's uncle won lotto and was so stunned he sat all night sitting on the lounge trying to take it in.
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Toni 
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