A deep hit of morning sun
Most of us would agree that King Tut and the other mummified ancient Egyptians are dead, and that you and I are alive. Somewhere in between these two states lies the moment of death. But where is that? The old standby — and not such a bad standard — is the stopping of the heart. But the stopping of a heart is anything but irreversible. We’ve seen hearts start up again on their own inside the body, outside the body, even in someone else’s body. Christian Barnard was the first to show us that a heart could stop in one body and be fired up in another. Due to the mountain of evidence to the contrary, it is comical to consider that “brain death” marks the moment of legal death in all fifty states. (…)
Sorensen says that the idea of “irreversibility” makes the determination of death problematic. What was irreversible, say, twenty years ago, may be routinely reversible today. He cites the example of strokes. Brain damage from stroke that was irreversible and led irrevocably to death in the 1940s was reversible in the 1980s. In 1996 the FDA approved tissue plasminogen activator (tPA), a clot-dissolving agent, for use against stroke. This drug has increased the reversibility of a stroke from an hour after symptoms begin to three hours.
In other words, prior to 1996, MRIs of the brains of stroke victims an hour after the onset of symptoms were putative photographs of the moment of death, or at least brain death. Today those images are meaningless.
