A 49-year-old female asked:
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when someone goes in 2 complete cardiac arrest . no pulse heaetbeat . how many min would it take without oxyegen to b brain dead ?

1 doctor answer
Dr. Jon Spiers
30 years experience Thoracic Surgery
Not long: Survival from cardiac arrest is determined by many things, and time is certainly an important one. However, how well the body is oxygenated and perfused during the arrest (say, by cpr) as well as body temperature all play a role. In your question, you imply there is no oxygen - so the answer is mere minutes.
Answered on Oct 2, 2015
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