Disclaimer
If you have any medical questions or concerns, please talk to your healthcare provider. The articles on Health Guide are underpinned by peer-reviewed research and information drawn from medical societies and governmental agencies. However, they are not a substitute for professional medical advice, diagnosis, or treatment.
A normal blood oxygen level depends on what exactly you’re measuring. The partial pressure of oxygen in a sample of arterial blood (PaO2) is normally 75–100 mm Hg. The partial pressure of oxygen in a sample of venous blood (PvO2) varies but is lower than this. The arterial oxygen saturation (SaO2), which can be measured by wearing a pulse oximeter, is normally >95%
Exercise frequently. Unfortunately, many people lead a sedentary lifestyle nowadays, which means. The level of oxygen in the body can be measured in two ways. The most common way is with a blood test. This test is known as Arterial Blood Gas (ABG) test and is done by drawing blood from an artery, and then the blood is sent to a research lab, where blood analysis is done. This test helps measure the oxygen and carbon dioxide levels, as well as acidity and the pH levels in one’s blood.
One of the primary functions of the blood is to carry oxygen around the body, delivering it to the tissues. The arteries carry blood away from the heart and contain more oxygen; the veins carry blood back to the heart and contain less oxygen. Having a low blood oxygen level means less oxygen is available for use by the body’s cells, which hinders cellular energy production. This can cause shortness of breath, headache, confusion, and—if oxygen levels are very low—organ damage and death. Low blood oxygen levels typically result from lung disease.
Low blood oxygen levels are addressed by treating the underlying problem. If this isn’t possible, supplemental oxygen (breathing oxygen through a tube) may be necessary. In some circumstances, such as in individuals with chronic obstructive pulmonary disease (COPD), it may be more appropriate to keep the SaO2 between 88–92%.
Advertisement
Over 500 generic drugs, each $5 per month
Switch to Ro Pharmacy to get your prescriptions filled for just $5 per month each (without insurance).
In medicine, using the term “normal” can sometimes be off-putting. Saying something is “normal” implies that everything else is “abnormal.” Additionally, saying something is “normal” may not be accurate, since something that is “normal” for you may not be “normal” for somebody else. Therefore, instead of saying certain values are “normal,” alternative terminology may be to say that these values are “healthy” or “within the reference range.”
Additionally, some values have well-defined cutoffs, while others do not. For example, when looking at hemoglobin A1c levels, a value of 6.5 or greater is always diagnostic of diabetes. On the other hand, when looking at testosterone levels, some use cutoffs of 270–1,070 ng/dL while others use cutoffs of 300–1,000 ng/dL.
The information below represents values that are commonly used as cutoffs. However, depending on the specific source you’re looking at or the laboratory you go to, their values may be a little different.
One of the most popular questions which people have is how low can their oxygen level go before they die. There are various reasons behind asking the question. One of the reasons is before going mountain climbing or even swimming. An understanding of how low a person’s oxygen level can go will allow them to make the right decisions to stay alive and healthy.
As mentioned in previous articles sleep apnea is a serious condition which many people suffer from. Knowing about the oxygen level can help people with the condition.
What is Sleep Apnea?
It is a critical sleep disorder where people experience their breathing stopping and starting repeatedly. You might even have sleep apnea if you snore loudly and experience exhaustion after a good night’s sleep. The most common type of sleep apnea occurs when the throat muscles relax, known as obstructive sleep apnea.
Breathing properly is vital and long-term sleep disorders have serious health implications such as an increase in the incidence of heart problems, diabetes, and high blood pressure.
What is the normal and low oxygen level?
Low oxygen level indicates that the treatment you are undergoing for sleep apnea isn’t effective. Low oxygen levels in the blood are something that patients with sleep apnea suffer from. A normal blood oxygen level should be anywhere between 94 percent and 98 percent.
Oxygen level drops to 80 percent or less due to not breathing for 30 seconds or more when sleeping. Anyone that has an oxygen level under 90 percent requires intervention as it is dangerously low for the body. The brain only has the ability to survive for up to 4 minutes if oxygen gets completely cut off.
Oxygen Levels during Sleep Apnea
The upper airway muscle tone during sleep tends to be narrow which makes it collapse temporarily in sleep apnea patients. As this happens, the breathing would stop along with a drop in blood oxygen levels. You will feel tired during sleep since the oxygen levels would drop, contributing to restless sleep. The carbon dioxide levels would start to build up as the oxygen levels drop. Sleepiness, fatigue and morning headaches would be felt during the day due to this.
How does Oxygen Levels Due to Sleep Apnea Impact the Body?
If the blood oxygen levels drops below 92 percent, it is considered to be abnormal. However, what is more, important to be considered is the amount of time spent with the abnormal oxygen levels and the number of desaturations. But, if the desaturated levels below 92 percent are experienced just once or twice within a 7 hour sleeping period and if it lasted for just a few seconds, then it is nothing to worry about. Experiencing long low oxygen levels, on the other hand, will seriously affect your health. It leads to the following.
- Fluid buildup in your body
- Heart rhythm problem
- Stroke
- Heart Failure
- Increasing pressure on your heart’s right side
How to monitor your Blood Oxygen Levels?
Now, normally it will your doctor who will discover that your blood oxygen levels are low or under the minimum 90 percent requirement. It is probably due to the oxygen levels dropping in the night. Sleep apnea is the cause of this or any other respiratory disorder such as UARS. Overnight monitoring would be recommended by the doctor for your oxygen levels using the oximeter that would be attached to the finger. Oxygen levels will be recorded by this device along with the pulse rate as you sleep.
It is important to follow up with the sleep study to ensure that the right actions are taken. Your short term memory and other cognitive functions would be damaged, as well as a heart attack and stroke in your sleep would occur with a continued drop in oxygen levels.
How to treat Sleep Apnea Oxygen Level?
Normal Human Body Oxygen Level
Anyone that has sleep apnea would use a CPAP machine to be treated. Oxygen levels will improve and return to normal levels if apnea episodes disappear. Sleep apnea is a serious condition with severe consequences, it is vital to get treated as early as possible.