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Doctor insights on: What Oxygen Level Causes Brain Damage

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Below what level blood oxygen does brain damage happen?

Below what level blood oxygen does brain damage happen?

Hypoxia: That depends on many factors: age of the person when it happened (children tolerate low oxygen better than adults), duration of the low oxygen (longer is worse), how healthy the person is (medical conditions may make the person more sensitive), and the body temperature of the person when it happened (the colder they were, the less oxygen their body and brain needed). There's no simple answer. ...Read more

Dr. Vasu Brown
313 Doctors shared insights

Brain Damage (Definition)

Anything that disrupts tissue integrity can cause brain damage: lack of or reduced oxygen (stroke), viamin deficiency, pressure (hydrocephalus, or, bleeding or tumor inside the skull), blunt or penetrating trauma; infection; inflammation (immune system mediated or otherwise); toxins (alcohol, ecstasy, lead, mercury, arsenic, to name but a few); diseases (ms, diabetes, ...Read more


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Does oxygen desaturation on a long-haul flight (13.5 hours) cause any sort of brain damage to a baby? I've read they go as low as 80% and lower.

Does oxygen desaturation on a long-haul flight (13.5 hours) cause any sort of brain damage to a baby? I've read they go as low as 80% and lower.

Odd comment: Babies with a normal lung structure will maintain normal oxygen levels on a long flight the same way any adult or older child would. There is no drop in the blood oxygen level during a flight. Pressurized air craft are a safe mode of travel for infants. Someone is providing you with goofy information. ...Read more

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If my husbands oxygen level got down in the 50s after getting a chest tube, can he have some brain damage?

Good question: I am assuming when he had the chest tube put in he was monitored and had some sedation?
Sometimes the pulse oximeter readings can be off (movement, poor contact)...Especially when procedures are being done.

I would bring your concerns to the treating m.D's, but I suspect that the dip was only transient and did not cause any permanent damage. ...Read more

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70% brain damage, not in a single area, due to lack of oxygen (caused by asphyxia), what are the chances to awaken and regain full consciousness?

70% brain damage, not in a single area, due to lack of oxygen (caused by asphyxia), what are the chances to awaken and regain full consciousness?

Unlikely: The extent of brain damage is not as important as the specific areas of the brain that are affected. So, if the pons or medulla were affected, you would be considered brain dead already. But, if you loose that much area, you will have significant mental status changes and impairments of motor function. This is not a good circumstance. ...Read more

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Can 7 seizures cause more brain damage for one in comatose stage also diabetic and on dialysis was without oxygen 5 min?

Can 7 seizures cause more brain damage for one in comatose stage also diabetic and on dialysis was without oxygen 5 min?

Seizures are not...: Seizures are generally not causing a problem. They are the result of a problem. A brain starts to get damage after about 2 minutes without air (oxygen). The brain is already damaged after 5 minutes. The coma, seizures, and other signs of brain damage just reveal the extent of the damage, but are not causing the problem. The problem, unfortunately, already happened. ...Read more

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Can you heal or reverse brain damage cause at birth from lack of blood and oxygen to the brain with healing foods or any break through medications?

I'm sorry: Please forgive my frankness. Charlatans prey on the desperation of handicapped people to make money. Anyone offering you "healing foods" or some magic supplement is trying to scam you. However, there are whole practices of medicine that focus on helping folks with this kind of disability -- not with the hope of cure or reversing the tissue injury, but making life easier and more enjoyable. ...Read more

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I'm considering climbing everest without oxygen, and training by sleeping and running in an altitude tent which will lower my blood 02 sat. Levels to ~70%. Can I do both without brain damage?

I'm considering climbing everest without oxygen, and training by sleeping and running in an altitude tent which will lower my blood 02 sat. Levels to ~70%. Can I do both without brain damage?

No guarantees.: People have different susceptibilities to hypoxia depending on many factors including age, physical fitness, and health status. Also, the ability of the brain to withstand hypoxia is time dependent, so time at the summit will be critical. ...Read more

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Can oxygen deprivation from wearing a very tight neck tie cause permanent brain damage? I recently wore a very tight tie for 24 hours straight because I fell asleep on a couch. Also, can holding your breath cause permanent brain damage?

Can oxygen deprivation from wearing a very tight neck tie cause permanent brain damage? I recently wore a very tight tie for 24 hours straight because I fell asleep on a couch. Also, can holding your breath cause permanent brain damage?

Very unlikely: Although you were wearing a tight tie, I seriously doubt you were at risk of strangulation. Holding your breath might cause you to faint, but I doubt you could cause brain damage that way either. However, I wonder about the source of your concerns. Could you benefit from some counseling? Let us know. ...Read more

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Can smoking cigarettes cause brain damage due to lack of oxygen or something?

Indirectly: Smoking is a major cause of arteriosclerosis, narrowing of arteries and reducing blood flow to the brain as well as strokes. All can lead to brain damage. ...Read more

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What are we doing in brain damage by lack of oxygen?

What are we doing in brain damage by lack of oxygen?

Hypoxia/anoxia: A lack or deficit of oxygen to the brain can occur for a variety of reasons. The term for this is hypoxia. Complete lack of oxygen is referred to as anoxia and is more severe. The neurons are particularly sensitive to this lack of oxygen and will die. This then results in the brain damage. In the most severe cirucumstances, this can lead to death of the patient. ...Read more

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How much brain damage is suffered after 30 minutes of no oxygen to baby?

How much brain damage is suffered after 30 minutes of no oxygen to baby?

Can't survive: If the brain is without oxygen, it will die after about 4 minutes. If the brain is still alive after 30 minutes, that brain was getting oxygen. ...Read more

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How many minutes without oxygen does it take before a child suffers permanent brain damage?

How many minutes without oxygen does it take before a child suffers permanent brain damage?

Varies: Depends on whether the deprivation is complete or not. The brain uses 20% of oxygen with every breatn taken because it is the most metabolically tissue in the body. Complete deprivation will kill the lower part of the brain in seconds. ...Read more

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Please tell me, could a baby survive with serious brain damage due to no oxygen for 20 minutes at birth?

Please tell me, could a baby survive with serious brain damage due to no oxygen for 20 minutes at birth?

Yes: Severe anoxia causing brain injury and server handicap may not result in early infant death. Children with severe brain injury whether acquired late in pregnancy, even within days of the onset of labor, or less likely during labor may live for decades requiring a great deal of special care and services. ...Read more

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Can you get brain damage from lack of oxygen fainting?

Can you get brain damage from lack of oxygen fainting?

Generally no: A simple faint restores adequate blood flow to the brain as you become horizontal, and recovery is forthcoming. If you have brain damage from a faint it can be from a near- fatal arrhythmia (such as from long qt syndrome or hypertrophic cardiomyopathy.), or prolonged seizure. A physician can help determine if there is cause for concern. ...Read more

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Can you get brain damage from lack of oxygen from snoring?

Can you get brain damage from lack of oxygen from snoring?

2 different events: Snoring results from vibration emitted from the upper airways, for instance a sides of the nostrils moving toward the septum during inhalation or more likely from vibration of the soft palate, uvula & perhaps tongue. Snoring is a noise. Its cause is airway obstruction. Severe obstruction blocks oxygen getting into the lung, hence possible brain injury--consider having polysomnogram test. ...Read more

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How long does it take before brain damage occur from lack of oxygen to the brain?

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. ...Read more

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Would hyperbaric oxygen therapy be effective for brain damage linked to long-term solvent abuse?

Would hyperbaric oxygen therapy be effective for brain damage linked to long-term solvent abuse?

No. The FDA lists 14: Conditions for which the benefits of hyperbaric oxygen treatment outweigh its risks of painful & sometimes serious consequences. It is no help whatsoever for brain damage from any cause, ADHD, Autism. The FDA requests that you report any provider who claims that it is. See www. Fda. Gov/ForConsumers/ConsumerUpdates/ucm364687.htm ...Read more

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My niece was without oxygen for about 5 minutes was brought back but is now comatose for 13 days now she has brain damage and had EEG had 7 seizures?

My niece was without oxygen for about 5 minutes was brought back but is now comatose for 13 days now she has brain damage and had EEG had 7 seizures?

Hypoxic encephal.: The hypoxia has likely resulted a secondary brain injury, and depending on age, the extent of recovery will be unknown for some time. The seizures are not unexpected and will need control, but likely not to be a long-term challenge. Have a neurology consult, provide supportive care, and hope for the best. ...Read more

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My sister went with oxygen for 7 minutes and a heart attack she a diabetic and had very low blood pressure kidney damage will she have brain damage?

My sister went with oxygen for 7 minutes and a heart attack she a diabetic and had very low blood pressure kidney damage will she have brain damage?

Not sure: Adults who are deprived of oxygen due to cardiac arrest for over 5 minutes usually suffer brain damage. However since she did not have a cardiac arrest and, despite very low blood pressure, she may have had enough cerebral circulation to avoid significant brain damage. However because of diabetes and smoking history, she may have come vascular disease which increases her risk. Hope for the best. ...Read more

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Does hyperbaric oxygen help you to recover from brain injury?

Yes: Texas researchers have found that patients with long-standing but stable traumatic brain injury (tbi) show a general improvement in speech, memory and attention after undergoing a series of hyperbaric oxygen therapy treatments. Dr. Paul harch and colleagues presented their findings in seattle at the undersea and hyperbaric medical society annual scientific meeting. ...Read more

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Brain injury oxygen deprivation are there institutions which specialize in brain injuries due to oxygen deprivation after taking oxycoten?

Brain injury oxygen deprivation are there institutions which specialize in brain injuries due to oxygen deprivation after taking oxycoten?

Yes: Sorry to hear about your loved one. There is nothing specific about oxycontin-induced anoxic brain injury; however, there are rehab facilities that do specialize in brain injury. Much can be done to help some patients to regain some of their activities of daily living, however most of this is general to all brain injury. Look for good management of family expectations while maximizing function. ...Read more

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Does hyperbaric oxygen help brain injury or stroke?

Does hyperbaric oxygen help brain injury or stroke?

Yes: We have used hbot for brain injuries of all types for over 10 years and have gotten excellent results. If I ever have a condition of this kind, an hbot chamber is one of the first places I want to be. Jain's textbook of hyperbaric medicine is a good starting place for info about the effects of hbot. ...Read more

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Is hyperbaric oxygen therapy an effective treatment for chronic brain injury?

Research underway: Here are a constelation of studies: http://www. Medicalgasresearch. Com/content/1/1/21. Most studies have been done with severe traumatic brain injury patients. I believe that the jury is still out. ...Read more

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Does weed cause brain damage?

Does weed cause brain damage?

Define brain damage: Marijuana use can lead to addiction and dependance and many experts consider these to be a form of "brain damage". There is strong evidence that prolonged use can lead to cognitive impairment which may be irreversible. ...Read more

Dr. Scott Bolhack
3,112 Doctors shared insights

Oxygen (Definition)

Oxygen is a gas that the cells in your body need to work properly. The air we breathe normally has 21% oxygen. A maximum of 100% oxygen can be given. Babies with heart or lung problems may need ...Read more


Dr. William Singer
635 Doctors shared insights

Brain Injury (Definition)

Damage to, or loss of, brain tissue due to various etiologies such ...Read more