Re: Can scientist/doctor bring patient to life (using technology) after he dies

Hi Anderson,

The answer to your question depends on how you define death.

If you are talking about cardiac arrest, then you will know it is commonplace to resuscitate people after cardiac arrest.

People are regularly found showing no signs of life (no obvious breathing, no obvious pulse), yet are resuscitated. This is relatively trivial, since it is very easy to miss weak cardiac activity; there are many cases of doctors mis-diagnosing death because of no obvious pulse or breathing.

If you are talking about a more rigorous definition of death, such as abolition of activity in the brain, then it is much rarer (verging on not possible) to see recovery after this stage. There is also an issue about how you measure abolition of activity in the brain.

Under normal circumstances, it takes about half-a-minute without cardiac activity to start causing irreversible damage to the brain, and after a couple of minutes without heart function, it is irreversible damage.

Hope this helps.
Yours,
David