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Doctor insights on: Dangerous Blood Oxygen Level

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What is normal levels of oxygen in the blood? What is considered low and what is considered dangerous? Is levels in the 80s ok?

What is normal levels of oxygen in the blood? What is considered low and what is considered dangerous? Is levels in the 80s ok?

Oxygen level....: The oxygen saturation, or pulse oximetry, should be in the 90's normally. Any value of less than 88% on room air qualifies a patient for supplemental oxygen therapy. So, an oxygen saturation in the 80s is not normal. Your doctor will need to find out why your oxygen level is low and provide treatment. ...Read more

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Dr. Umesh Patel
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Dr. Scott Bolhack
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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


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Are low blood oxygen levels normal?

Are low blood oxygen levels normal?

High is good.: Well you would anticipate 95 to 100% oxygen saturation for a young healthy adult. The lower the oxygen saturation the more concern. ...Read more

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Dr. Umesh Patel
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How can I boost my blood oxygen level?

How can I boost my blood oxygen level?

Supplement: You could supplement oxygen if you had a condition which required it. It would do you no good just to do it. ...Read more

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What is considered too low for oxygen levels in the blood?

What is considered too low for oxygen levels in the blood?

Hypoxemia: Oxygen level in the blood should be >90 mmhg, it gets slightly lower with advancing age, any level lower than expected should be investigated. ...Read more

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Low blood oxygen levels, at what number would be low enough to cause a person to fall to the floor and have a blackout?

Low blood oxygen levels, at what number would be low enough to cause a person to fall to the floor and have a blackout?

Depends: Its the rate of fall thats more important than the actual number. When the partial pressure of oxygen falls below 55 or 88% hemoglobin saturation the delivery of oxygen to our organs begins to decrease. If your organs, like the heart , is already damaged this drop can be very dangerous. If the organs are healthy they can tolerate this drop in oxygen levels for several minutes, sometimes even longe. ...Read more

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Dr. Umesh Patel
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When does low blood oxygen levels result in a coma? (I know it is under 74 because I was still sort of awake then although I suspect not much under.)

When does low blood oxygen levels result in a coma? (I know it is under 74 because I was still sort of awake then although I suspect not much under.)

Well this varies: This varies a bit from person to person, so there is not really a number. It sounds like you are talking about the pulse oximetry reading, right? This is not used to generate concern about a coma. The pulse ox reading varies and is somewhat inaccurate. For most people, having insufficient oxygen for over 5 minutes results in brain damage, which may cause a coma. ...Read more

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What is a low oxygen level in the blood considered?

What is a low oxygen level in the blood considered?

Sats <90%: Oximeter showing <90% or more appropriately pao2 <58 is considered hypoxia and need for o2 supplemental oxygen will be needed. ...Read more

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Can I increase my oxygen level in my blood by exercising a lot, even if I have anaemia?

Can I increase my oxygen level in my blood by exercising a lot, even if I have anaemia?

Oxygen in blood: The oxygen in your blood is linked to the concentration of red cells in your blood. If you are anemic, that is what is going to limit your oxygenation, not how much you exercise. Being healthier may improve your anemia. If you exercise more, you may signal your body to tell your bone marrow to make more blood. ...Read more

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