Flatliners (1990)

[Mistress0fTheDamned]

Medical students begin to explore the realm of near death experiences, hoping for insights. Each has their heart stopped and is revived. They begin having flashes of walking nightmares from their childhood, reflecting sins they committed or had committed against them. The experiences continue to intensify, and they begin to be physically beaten by their visions as they try and go deeper into the death experience to find a cure.

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[Mistress0fTheDamned]

While a defibrillator is of no use if a patient has truly flatlined, a patient in a "fine v-fib" rhythm can appear to have flatlined but still be revived with the paddles. Therefore, when in doubt, the Advanced Cardiac Life Support guidelines call for administering the shock, though it's not the treatment of choice.

[Mistress0fTheDamned]

No people who have had near death experiences were actually brain dead. It is understood that these experiences are generated in the brain. Yet the experiences of the flatlined medical students are said to occur after they are declared brain dead. If that is so, they could not be bought back to relate their visions, since brain death is irreversible, as any medical student should know.