I don't think even a doctor could give a good answer to this question..the heart is the most amazing organ in the body....wth maybe the exception of the brain..
For example I have an aunt who is 91..she has had three heart attacks...at least...the first she was only 54 years old and she stopped breathing and her heart stopped beating.....they had just started having paramedics where we lived and she made it even though her doctor thought she would never make it out of the emergency room alive....
She has had two other major heart attacks plus open heart surgery...I saw her angiogram and I cannot believe she is still living with the amount of damage she has....she is basically living on a third of a normal heart tissue but still here!!!
So no one really knows!!!
