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How long does it take the brain without any oxygen before it has severe brain damage?

Answer:
Six to nine minutes seem to be the time frame a brain can tolerate being without oxygen before serious irreparable damage occurs.
This can vary in newborns and young children who seem to be more resilient than adults.
Also, temperature of the individual will also impact neurologic outcome. Colder temperatures decrease the body's oxygen demand so hypothermic states will lengthen the time tolerated without oxygen.
First answer by ID1250757776. Last edit by Giovanni9009. Contributor trust: 1 [recommend contributor recommended]. Question popularity: 15 [recommend question].

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