A 29-year-old member asked:
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how long does it take before brain damage occur from lack of oxygen to the brain?

1 doctor answer
Dr. Bruce J. Stringer
46 years experience Radiology
4 minutes or more: In the event of a full blown cardiac arrest there can be brain damage in as little as 4 to 5 minutes without circulation at normal body temperature. If the body had been cooled by submersion in cold water it could be much longer. Less severe lack of oxygen will take longer to produce brain damage.
Answered on Oct 28, 2018
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Related questions:

A 21-year-old female asked:
Dr. Sue Ferranti
28 years experience Internal Medicine
Sleep study???: Have you had a sleep study? A sleep study will help to define what is happening while you sleep as well as determine if your oxygen level is dropping ... Read More
1
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A 40-year-old member asked:
Dr. Alan Ali
Dr. Alan Ali answered
31 years experience Psychiatry
Cerebral anoxia: Confusion or loss of consciousness, dizziness, seizures, coma. Oxygen deprivation to the brain causes brain cells to die within minutes.
A 40-year-old member asked:
Dr. Shadi Abu Halimah
20 years experience Vascular Surgery
Stroke or death : If localized area then patient will have stroke but if it's global and for long time then can cause brain death.
5
5 thanks
A 19-year-old male asked:
Dr. Robert Killian
27 years experience General Practice
Too much Oxygen: Nope. But too much oxygen can burn tissue and cause damage that can be permanent.

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