when you have a heart transplant you don't die they connect you up with this machine and it pumps and oxygenates the blood, also to be clinically dead your brain has to be stopped, or not working I don't know the proper term for it but your when you have no brain activity you are clinically dead.
yes, no breathing is dead, however, you can be resuscitated if you have a little bit of brain or heart/lung or any function like that.
correct me if I'm wrong, but that is my knowledge of it.
-------
join lw warm and fuzzy patrol today!