What is Cerebral Hypoxia?
Cerebral hypoxia refers to a condition in which there is a decrease of oxygen supply to the brain even though there is adequate blood flow. Drowning, strangling, choking, suffocation, cardiac arrest, head trauma, carbon monoxide poisoning, and complications of general anesthesia can create conditions that can lead to cerebral hypoxia. Symptoms of mild cerebral hypoxia include inattentiveness, poor judgment, memory loss, and a decrease in motor coordination. Brain cells are extremely sensitive to oxygen deprivation and can begin to die within five minutes after oxygen supply has been cut off. When hypoxia lasts for longer periods of time, it can cause coma, seizures, and even brain death. In brain death, there is no measurable activity in the brain, although cardiovascular function is preserved. Life support is required for respiration.
Is there any treatment?
Treatment depends on the underlying cause of the hypoxia, but basic life-support systems have to be put in place: mechanical ventilation to secure the airway; fluids, blood products, or medications to support blood pressure and heart rate; and medications to suppress seizures.
What is the prognosis?
Recovery depends on how long the brain has been deprived of oxygen and how much brain damage has occurred, although carbon monoxide poisoning can cause brain damage days to weeks after the event. Most people who make a full recovery have only been briefly unconscious. The longer someone is unconscious, the higher the chances of death or brain death and the lower the chances of a meaningful recovery. During recovery, psychological and neurological abnormalities such as amnesia, personality regression, hallucinations, memory loss, and muscle spasms and twitches may appear, persist, and then resolve.
- FAQs About Hypoxia, Anoxia and Asphyxia
- Oxygen Deprivation (Asphyxia) Resulting in Infant Birth Injuries
Brain Injury Organizations
|Brain Injury Association of America, Inc.
1608 Spring Hill Rd
Vienna, VA 22182
Tel: 703-761-0750 800-444-6443
|National Rehabilitation Information Center (NARIC)
8400 Corporate Drive
Landover, MD 20785
Tel: 301-459-5900/800-346-2742 301-459-5984 (TTY)
|Brain Injury Resource Center
Seattle, WA 98124
|Brain Trauma Foundation
New York, NY 10004-1007
233 South Wacker Drive
Chicago, IL 60606
Tel: 312-726-6200 800-221-6827