For a brief time: When the heart stops circulating blood to the brain the functions of brain cease after about 5 minutes. If CPR is performed the brain function can return. However prolonged CPR may not get enough blood to brain to prevent brain damage even if heart recovers.
Answered 12/28/2016
6.3k views
No: Cardiac arrest means- heart not beating, hence no blood flow/ circulation- brain does not function when there is no blood supply.
Answered 7/25/2013
6.1k views
Initially yes: The brain is highly reliant on adequate blood flow and oxygen so the longer there is a cardiac arrest the more likely permanent brain damage will occur. The point of doing CPR is to maintain at least some flow to the brain that hopefully will allow recovery when the heart performance can be re-established.
Answered 6/10/2014
5.9k views
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