Not specific.: Implantable defibrillators fire within 10 seconds, and are very successfull. I takes 5 minutes of cerebral hypoxia for brain death at 37centigrade.If heart fibrillating and no CPR done, brain death will ensue within 5 minutes. If first defibrillatory shock delivered within 30 seconds of arrest best chance.
Answered 11/23/2016
5.7k views
Every minute counts: A rhythm which can be converted should be done as soon as possible. After 4minutes a good outcome is unlikely.
Answered 3/26/2013
5.7k views
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