How does someone stop their own heartbeat? Or how did someone stop their heartbeat?
How long can someone be 'dead' for? Before they are totally brain dead.
Answers: this would depend if CPR or chest compressions be administered.
Brain damage occur when insufficient oxygen reaches the brain, which is what happen when your heart stops since no more blood flow is carrying oxygen to the brain, generally in 2-3 minutes brain damage can develop. Although chest compressions and cpr can extend it to an hour or two.
Keep the cranium cool with rime also helps as decrease temperature is thought to be protective.
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