Your blood oxygen level indicates how much oxygen your red blood cells are carrying. High blood oxygenation plays an essential role in ensuring that your muscles, brain and other organs receive the energy they need to function properly. That’s why it’s so important to understand how to measure your current oxygen level—and determine whether it falls within an acceptable range.
In human volunteers with normal baseline SpO2 (≥97%), a profound drop in SpO2 occurred following intravenous administration of 5 mL of 1% methylene blue with a median nadir SpO2 of 65% although there was a wide range in SpO2 reduction among the subjects 26). Indocyanine green and indigo carmine do not have as great absorption for red light. Modified from Hackett 1995: SaO2 varies over a range in normal individuals at a given altitude. It is usually lower on first arrival at a given altitude, and rises somewhat with acclimatization. Average SpO2: overall average of your SpO2 readings gathered throughout the recording session. Lowest SpO2: the lowest SpO2 reading gathered throughout the recording session. O2 Score: the overall assessment of oxygen shortage throughout the recording session. It is a combined assessment of frequency, depth, and duration of drops in oxygen. SpO2 stands for Saturation of peripheral Oxygen. What is The Normal SpO2 level? What Level of SpO2 is Dangerous? Healthy adults will generally have 95% – 99% blood saturation while any reading below 89% would typically be cause for concern.
Understanding Oxygen Saturation
Oxygen saturation (SpO2) measures how much oxygen blood carries in comparison to its full capacity. In other words, it’s an estimation of how much oxygen the hemoglobin in your blood contains compared to how much it could contain. Pulse oximetry devices represent this measurement using a simple percentage. So if your red blood cells contain 95% oxygenated and 5% non-oxygenated hemoglobin, your SpO2 would be 95%. Simple, right?
Now, this is where things get more complicated. It’s possible (and perfectly natural) for your SpO2 to change throughout the day, particularly if you’re transitioning from low-energy to high-energy activities. However, as long as your SpO2 stays within a healthy range amidst these fluctuations, there’s no need for concern.
Changes in activity aren’t the only factors that impact oxygen saturation. There are several adverse conditions and diseases that can negatively impact SpO2, including asthma and chronic obstructive pulmonary disease (COPD). People afflicted by these health problems often have a lower SpO2 average, necessitating the use of supplemental oxygen and other treatment methods.
Your “Normal†SpO2 Range
According to the Mayo Clinic, normal pulse oximeter readings usually range from 95 to 100 percent. Values under 90 percent are considered low, and indicate the need for supplemental oxygen. This condition is often referred to as hypoxemia, and its symptoms include severe shortness of breath, increased heart rate and chest pain.
For people with chronic lung conditions and other breathing problems, the “normal†SpO2 range of 95% to 100% doesn’t apply. These individuals should always consult with their doctor for information on acceptable oxygen levels for their unique state of health. That being said, here are a few general guidelines on SpO2 for individuals with acute respiratory issues and chronic diseases:
â— In a patient with acute respiratory illness (e.g., influenza) or breathing difficulty (e.g, an asthma attack), an SpO2 of 92% or less may indicate a need for oxygen supplementation.
â— In a patient with stable chronic disease (e.g., COPD), an SpO2 of 92% or less should prompt referral for further investigation of the need for long-term oxygen therapy.1
Measuring Your Oxygen Level
Today’s medical experts have access to a wide variety of SpO2 monitoring tools, including finger pulse oximeters. These compact, noninvasive devices attach painlessly to the fingertip and send wavelengths of light through the finger to assess SpO2 and pulse rate. Under the guidance of their physicians, people with heart and breathing problems can use personal finger pulse oximeters to manage their conditions and assess the efficacy of treatment methods. Pulse oximetry can be a useful aid in decision-making, but is not a substitute for a clinical assessment, nor sufficient for diagnosis by itself. Arterial blood gas measurements, obtained by arterial puncture, remain the gold standard for measurement of oxygen saturation.
A personal finger pulse oximeter is designed to be fast, durable and intuitive. All you have to do is place it on any finger and wait a few seconds for it to measure your current SpO2 and heart rate. However, not all pulse oximeters deliver the same level of performance and versatility. Many other brands of finger pulse oximeters are unable to perform with accuracy on patients with low perfusion or dark skin pigmentation, and can’t stand up to repeated daily use. That’s why in-home caretakers and people suffering from respiratory problems count on clinically proven self-monitoring solutions from Nonin.
Nonin Personal Finger Pulse Oximeters
Nonin invented the very first finger pulse oximeter in 1995, making pulse oximetry a viable solution for at-home patient monitoring. Our personal finger pulse oximeters are engineered for daily use in the most demanding monitoring environments, making them suitable for detecting SpO2 and adjusting oxygen flow while exercising, traveling or resting at home. Nonin pulse oximeters provide fast, reliable measurements that empower users and their physicians to make smarter, more confident healthcare decisions.
Count on Nonin for Peerless At-Home Monitoring Solutions
To learn more about Nonin and our award-winning self-monitoring oximetry devices, be sure to contact us today. We can guide you to the perfect at-home monitoring solution for your specific needs.
When it comes to your blood oxygen level, a second-look can never hurt.
Let’s be frank: if you’re currently living with a chronic lung disease like chronic obstructive pulmonary disease (COPD), pulmonary fibrosis (PF) or emphysema, the maintenance of your health and symptom expression is generally your top priority. Often, this can mean a particular level of scrutiny in the foods you eat, the exercise you get, your exposure to cigarette smoke and other harmful airborne conditions, and the continual maintenance of your respiratory metrics, such as your PFT and blood oxygen levels.
Simply put, for those with lung disease, it’s not only incredibly important to monitor your health and make adjustments in your behavior when necessary, but for many, it’s a way of life. Your blood oxygen level is one of the most important metrics to measure; as it is a clear indicator of how well your body is distributing oxygen (more on that in a moment). Taking the time to determine your blood oxygen level and how it fits in with the national average can be a vital marker for the direction of your respiratory health.
With your health in mind, the Lung Health Institute is here to break down the things you need to know on your Blood Oxygen Level: Is My Oxygen Level Normal?
What is Your Blood Oxygen Level?
In the most basic terms, your blood oxygen level is the amount of oxygen in your blood. Sounds simple, right? However, the complexities of this measurement come into play when trying to increase this amount by doing more than taking deeper breaths. As you can imagine, the level of your blood oxygen is important for your general health. If your blood oxygen is too low—in comparison to the average blood oxygen level of a healthy adult—you may be hypoxemic.
As is the case of most people with COPD, oxygen levels are below normal and hypoxemia can frequently occur over time. This means that your body has trouble nourishing your cells, tissues and organs. As your blood is the medium for getting oxygen (via red blood cells) throughout your body, poor circulation can produce the symptoms of chronic lung disease—namely shortness of breath.
Overall, this can reduce your quality of life, impair your skeletal muscle function, impair your exercise tolerance and increase your risk of death.
How is Your Blood Oxygen Level Measured?
A normal blood oxygen level typically ranges from 75 to 100 mm Hg. In the case of dangerously low blood oxygen, the level that requires supplemental oxygen is anything under 60.
The best way to monitor blood oxygen levels is through your arterial blood gasses (ABGs); however, this can be difficult to do at home. In place of using an ABG test, it’s more convenient to use a pulse oximeter, which measures oxygen saturation through a small clip on your finger. In the realm of oxygen saturation levels, normal is often considered anything between 95-100 percent.
Anything below 90 is usually considered low, therefore if you are below this metric, you should consider asking your doctor for a prescription for supplemental oxygen.
What Does My Blood Oxygen Level Mean for My Health?
Your blood oxygen levels have a direct effect on the expression of your symptoms. A low blood oxygen level can signify a lack of proper circulation or oxygen saturation within the body, which can ultimately result in a variety of conditions typically associated with chronic lung disease.
These may include:
- Confusion
- A sense of euphoria
- Restlessness
- Headaches
- Shortness of breath
- Rapid breathing
- Dizziness, lightheartedness and/or fainting spells
- Lack of coordination
- Rapid heart rate
- Elevated blood pressure
- Visual disturbances
- Bluish tint to lips, earlobes and/or nail beds
- Elevated red blood cell count or polycythemia
What Can I Do Moving Forward?
Understanding your blood oxygen levels is a key step in learning how to measure your health. Whether it’s through measuring it yourself using a pulse oximeter, or having it properly tested through an ABG test with your primary physician, knowing the basic metrics of your respiratory health is critical to making the changes necessary to improve it.
Although the most important step in taking control of your health is to quit smoking, a close second is to address your general health through diet and exercise.
What Should Your Oxygen Level Be
With these behavioral changes, it’s possible to greatly affect the pronouncement of symptoms for people with COPD, pulmonary fibrosis and emphysema. However, when lifestyle changes fail to improve your quality of life in the way that you may expect, it may be time to consider cellular therapy. Rather than addressing the symptoms of lung disease, cellular therapy may directly affect disease progression and may improve quality of life.
For more information on cellular therapy and what it could mean for your life moving forward, contact us today or call us at 888-745-6697. Our patient coordinators will walk you through our available treatment options, talk through your current health and medical history and determine a qualifying treatment plan that works best for you.
Normal Blood Oxygen Level By Age
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