U.S. doctors online nowAsk doctors free
A 34-year-old member asked:

Is there brain function during a cardiac arrest?

3 doctor answers8 doctors weighed in
Dr. Latisha Smith
Wound care 39 years experience
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.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Gutti Rao
Hospital-based practice 47 years experience
No: Cardiac arrest means- heart not beating, hence no blood flow/ circulation- brain does not function when there is no blood supply.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Dennis Clifford
A Verified Doctoranswered
44 years experience
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.
Created for people with ongoing healthcare needs but benefits everyone.

Similar questions

A 32-year-old member asked:

Can your brain still function after having cardiac arrest?

2 doctor answers4 doctors weighed in
Dr. Rada Ivanov
Pulmonary Critical Care 32 years experience
Yes: Depends how long the brain was without oxygen - if the patient was immediately resuscitated, many of them recover completely.
Created for people with ongoing healthcare needs but benefits everyone.
A 49-year-old male asked:

Can the brain regenrate after cardiac arrest after 30min.?

2 doctor answers2 doctors weighed in
Dr. John Garner
Cardiology 17 years experience
Generally not: It depends on the specific situation, but if the brain has been deprived of oxygen for more than 12 to 14 minutes, the damage is (usually) at least partly irreversible. A relatively new technique called therapeutic hypothermia improves the statistics somewhat, but the outcomes for many patients are still poor.
Created for people with ongoing healthcare needs but benefits everyone.
A 42-year-old member asked:

Cardiac arrest related to brain inflammation?

2 doctor answers4 doctors weighed in
Dr. William Walsh
Addiction Medicine 18 years experience
Cause of death: Brain swelling (edema) will eventually cause the brain to herniate through one of the layers of protective scaffolding. This usually leads to wild fluctuations in blood pressure and rapidly to respiratory and cardiac arrest. However, the cause of death is the cause of the brian edema, not the cardiac arrest.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Dec 28, 2016
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits - just $39!
50% off with $15/month membership

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.