Doctor insights on:
Dangerous Blood Oxygen Level
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 moreGet help now ›
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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?
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 moreGet help now ›
96% or higher: Normal is 96% or above on room air ...Read moreGet help now ›
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 moreGet help now ›
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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 moreGet help now ›
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