It's hard to say. There've been many reports of people whose hearts have stopped beating who later spontaneously regain their vital signs, such as a 34-year-old woman in Spain who was clinically dead for six hours in December 2019. It's thought such cases often occur because an extreme drop in body temperature prevents cell damage that leads to biological and irreversible death.
How long can someone have been dead and then be brought back to life?
Odudu Abasi Mkpong
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