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:
● 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.
● 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.
FAQs
An oxygen saturation of 95 to 100 percent is normal for healthy children and adults. Warning signs of a low oxygen level include trouble breathing, confusion, difficulty waking up, and pale, gray, or blue-colored skin, lips, or nail beds, depending on skin tone.
What is a dangerously low oxygen level? ›
People should contact a health care provider if their oxygen saturation readings drop below 92%, as it may be a sign of hypoxia, a condition in which not enough oxygen reaches the body's tissues. If blood oxygen saturation levels fall to 88% or lower, seek immediate medical attention, says Dr. Lutchmansingh.
Is 92 a good oxygen level? ›
Is 92% a good oxygen level? In most people, a healthy blood oxygen level is 95–100%. Anything below 95% is considered low and may put you at risk of hypoxemia. That said, people with certain conditions, such as COPD, may need to maintain their blood oxygen at a different level.
How can I raise my oxygen level quickly? ›
Some ways include: Open windows or get outside to breathe fresh air. Something as simple as opening your windows or going for a short walk increases the amount of oxygen that your body brings in, which increases overall blood oxygen level. It also has benefits like improved digestion and more energy.
At what oxygen level should you go to the ER? ›
90% or less This oxygen level is very concerning and may indicate a severe medical problem. Call 911 or go to the nearest emergency room immediately. You may need an urgent X-ray or heart test. 91% to 94% This oxygen level is concerning and may indicate a medical problem.
What happens if your oxygen level is 85? ›
Oxygen level below 90% is very concerning, indicating a medical emergency. The state is termed hypoxemia. Immediate medical help must be given to the person. If the oxygen saturation drops below 85%, the severe lack of oxygen affects the brain.
What is the lowest oxygen level before death? ›
1 For most healthy adults and children, a normal oxygen saturation level is between 95% and 100%. 2 Hypoxemia occurs with lower levels of oxygen in the blood and can lead to complications or even death at dangerously low levels below 90%.
Which finger to use for pulse oximeter? ›
Make sure your hand is warm to the touch. Then rest it on your chest for five minutes. Switch the pulse oximeter on. Then attach the clip of the pulse oximeter to the finger next to your thumb, or your middle finger.
What should I do if my oxygen level is 93? ›
If the repeat reading is 93% or lower: This is a sign that you may need extra support, such as oxygen therapy. Contact your healthcare provider (PCP, out-of-hours service or home monitoring service if instructed to do so) by telephone straight away and advise them of your oxygen saturation reading.
Does drinking water increase oxygen in the body? ›
When you drink lots of water, your lungs remain properly hydrated, which improves their ability to oxygenate and expel carbon dioxide. Therefore, the oxygen saturation level of your body gets improved. Also, drinking 2-3 litres of water may improve your blood's oxygen saturation level by up to 5 per cent.
Drinking water is crucial to maintaining circulation and helping nutrients, including oxygen, move through the body. If you don't have enough water – dehydration – issues like hypotension and lactic acid buildup can occur and potentially affect your breathing ability.
Is 94 oxygen ok for the elderly? ›
What Is the Normal Oxygen Level for the Elderly? The normal oxygen saturation level is from 97 to 100%. Older adults usually have lower levels of oxygen levels as compared to younger adults. If a person is older than 70, a normal oxygen level could be around 95% instead.
What are the symptoms of low oxygen? ›
Hypoxia is low levels of oxygen in your body tissues. It causes symptoms like confusion, restlessness, difficulty breathing, rapid heart rate, and bluish skin. Many chronic heart and lung conditions can put you at risk for hypoxia. Hypoxia can be life-threatening.
Do you need oxygen if your oxygen level is 92? ›
If you are using an at-home oximeter, you should contact your health care provider if your oxygen saturation level is 92 percent or lower. If it falls to 88 percent or lower, seek immediate medical attention.
Is a 93 oxygen level ok while sleeping? ›
Normal and Dangerous Oxygen Levels During Sleep
Normal blood oxygen levels vary from person to person, but for most it's around 95% to 100% regardless of whether they are asleep or awake. A blood oxygen level below 92% may be a cause for concern, while a level below 88% requires prompt medical attention.
What is the lowest oxygen level for survival? ›
Oxygen saturation levels (SaO2) ranging between 95% and 100% are considered normal. SaO2 levels lower than 90% (hypoxemia) may lead to health complications and if it drops below 70%, the outcome may be fatal.
How low does your oxygen have to be to be hospitalized? ›
When should I call my doctor? If you're using an oximeter at home and your oxygen saturation level is 92% or lower, call your healthcare provider. If it's at 88% or lower, get to the nearest emergency room as soon as possible.
At what oxygen level is a ventilator needed? ›
Inflammation in the lungs and respiratory tract can reduce the flow of oxygenated blood throughout the body, causing a patient to gasp for air. Normal oxygen saturation levels range between 94%-99%. When SPo2 levels fall below 93% it is a sign that oxygen therapy is required.
