Announced in August last year, this graph is now available to all Charge 3, Ionic, Versa, Versa Lite, and Versa 2 users
Fitbit had announced the addition the Estimated Oxygen Variation graph during their launch event last year in August. The graph began rolling out to a few users in January this year and it has finally been made live to all users on the Charge 3, Ionic, Versa, Versa 2 and Versa Lite.
The Estimated Oxygen Variation graph utilizes the red and infrared sensors that's on the back of the wearable to estimate the variabilities in your blood oxygen levels.
The graph, which you can see in the Fitbit app under the Sleep tile, approximates the changes in your blood oxygen saturation while you sleep.
Blood oxygen saturation measures the percent of your blood that's saturated with oxygen. Typically, it's at 95-100% - meaning the blood is carrying as much oxygen as it can.
If you stop breathing or have other lung issues, the saturation level can fall since less oxygen is entering the body. In general, variations should be low and if you spot frequent and big variations it could be a sign that you may be experiencing breathing disturbances during sleep.
Also Read: Fitbit data can predict flu outbreaks
Breathing disturbances during sleep means that you are possibly suffering from sleep apnea. Sleep apnea is a sleep disorder that occurs when a person's breathing is interrupted during sleep. People with untreated sleep apnea stop breathing repeatedly during their sleep, sometimes hundreds of times. This means the brain - and the rest of the body - may not get enough oxygen.
There can be various causes that lead to sleep apnea including large tonsils, a large tongue or a small jaw bone and even nasal obstruction due to a deviated septum, allergies or sinus problems.
While this is not serious at a nascent stage, if left untreated it can result in high blood pressure, stroke, heart failure, irregular heart beats and heart attacks, diabetes, depression, worsening of ADHD and headaches.
Also Read: Google's Fitbit wearables get SpO2 feature before Apple Watch, here's what it does
Should I be worried about high oxygen variations on Fitbit? ›
If you frequently see high variations on your graph, consider talking to your doctor, particularly if you experience symptoms such as excessive tiredness, loud snoring, or gasping during sleep.Is low estimated oxygen variation good? ›
In general, variations should be low and if you spot frequent and big variations it could be a sign that you may be experiencing breathing disturbances during sleep. Breathing disturbances during sleep means that you are possibly suffering from sleep apnea.What does it mean when you have low oxygen variations? ›
A blood oxygen level that is too low compared with the average level of a healthy person can be a sign of a condition known as hypoxemia. This develops when the body has difficulty delivering oxygen to all of its cells, tissues, and organs.What is normal oxygen variation during sleep? ›
While asleep, blood oxygen levels typically remain between 95 and 100 percent; however, if levels fall below 90 percent, hypoxemia occurs. As the percentage of oxygen saturation decreases, the severity of hypoxemia increases.What causes oxygen variations during sleep? ›
When we sleep, the oxygen level in our blood drops, due to interruptions in breathing. Lung and sleep disorders tend to decrease those levels further, and dangerously so. But the range of those levels during sleep varies widely between individuals and, researchers suspect, is greatly influenced by genetics.Can you tell if you have sleep apnea from a Fitbit? ›
Can Fitbit Indicate Sleep Apnea? Fitbit devices with SpO2 monitors might be able to indicate underlying sleep apnea, but they are not FDA approved to detect or diagnose sleep apnea.How do you increase oxygen variation? ›
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.
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.What should your oxygen level be when walking? ›
95% to 100% This oxygen level is normal. Walk around for two minutes and measure your oxygen level again. If your oxygen level falls below 95%, follow the instructions in the applicable section above. Important note: Oxygen meters can give incorrect results in people with darker skin.How long can you survive with low oxygen levels? ›
Most people will die within 10 minutes of total oxygen deprivation. Those in poor health often die much sooner. Some people may suffer other medical catastrophes, such as a heart attack, in response to oxygen deprivation.
What are the four most common causes of oxygen deficiency? ›
Classic causes of hypoxia include hypoventilation, ventilation-perfusion mismatch, the low oxygen content in the air, right to left shunting, or impaired diffusion.Does high oxygen variation mean sleep apnea? ›
"Sleep apnea is a common cause of variation in oxygen level, but sleeping at altitude can also increase variability. It's probable that some types of heart failure are associated with variation in oxygen level, too (Cheyne-Stokes respiration)," said Dr. Conor Heneghan.What oxygen level is sleep apnea? ›
When the percentage of oxygen saturation falls below 94%, that is called a desaturation. If the total number of desaturations divided by the total time is 5 or more desaturations per hour, then that is considered mild sleep apnea.What should my blood oxygen level be with sleep apnea? ›
During apnea events the body is denied oxygen. Normal blood oxygenation is at 90%- 95%. An apnea event can drive that level into the 80's% or even 70's%.Does low oxygen make you tired? ›
If you have a health condition that causes low levels of oxygen in your blood (hypoxia), you may feel breathless and tired, particularly after walking or coughing.Is it okay for oxygen levels to fluctuate? ›
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.How many apneas is considered sleep apnea? ›
Severe obstructive sleep apnea means that your AHI is greater than 30 (more than 30 episodes per hour) Moderate obstructive sleep apnea means that your AHI is between 15 and 30. Mild obstructive sleep apnea means that your AHI is between 5 and 15.How accurate is Fitbit sleep oxygen? ›
The data provided by Fitbit SpO2 is intended to be a close estimation of your blood oxygen saturation levels, but may not be precisely accurate. You should not use or rely on Fitbit SpO2 for any medical purposes.Can a heart monitor tell if you have sleep apnea? ›
Conclusion: HR tachogram patterns derived from ambulatory ECGs provide a simple method for identifying sleep apnea syndrome and other sleep disturbances in patients without major autonomic dysfunction.What is a healthy breathing rate during sleep? ›
See Full Reference is 12 to 20 times per minute. In one study, the average sleep respiratory rate rate for people without sleep apnea was 15 to 16 times a minute.
How does Fitbit detect snoring? ›
So how does it work? Snore & Noise Detect uses the built-in microphone on your Fitbit smartwatch. * During sleep, your Fitbit watch will analyze the noises in your room, which may include snoring from you, snoring from others, or other sounds like a leaky faucet, car alarm, or barking dog.Does sleep apnea occur every night? ›
What is sleep apnea? Sleep apnea is a serious sleep disorder. People who have sleep apnea stop breathing for 10 to 30 seconds at a time while they are sleeping. These short stops in breathing can happen up to 400 times every night.What is the best sleeping position for lungs? ›
Sleeping. Lie on your side with a pillow between your legs and your head elevated with pillows. Keep your back straight. Lie on your back with your head elevated and your knees bent, with a pillow under your knees.What to do if oxygen level is 88? ›
If it's at 88% or lower, get to the nearest emergency room as soon as possible. If you have a chronic lung condition, such as COPD or asthma, you'll likely need to see your healthcare provider regularly to make sure your treatment is working.What are the symptoms of low oxygen at night? ›
- Difficulty breathing or shortness of breath (dyspnea).
- Rapid heart rate (tachycardia).
- Bluish color in skin, fingernails and lips (cyanosis).
Oxygen saturation levels (SpO2) between 95 to 100 percent are considered normal for both adults and children (below 95% is considered abnormal). People over 70 years of age may have oxygen levels closer to 95%. Normal oxygen saturation levels (SpO2) are between 95 to 100 percent for both adults and children.How low is oxygen saturation before death? ›
Confusion, increased pulse rate (>20% average), low oxygen saturation (<90% using pulse oximetry), death rattle (respiratory sounds associated with movement of secretions), and consciousness level (responsive to voice, pain, or nonresponsive) were all also significantly associated with imminent death, with respective ...How low is too low for oxygen while sleeping? ›
When the oxygen saturation falls below 89 percent, or the arterial oxygen pressure falls below 60 mmHg — whether during rest, activity, sleep or at altitude — then supplemental oxygen is needed.Do oxygen levels drop when moving around? ›
O2 drops with exertion because your muscles require more energy when they are active and O2 plays a role in generating that energy. Unfortunately your lungs aren't able to get enough O2 into your bloodstream to feed the demand so your levels drop.Which food increase oxygen level in body? ›
In addition, foods like lemon, beetroot, avocado, spinach, carrot, beans, organ meat and turmeric are also helpful. These foods are high in iron, nitrate, vitamin and mineral content which play a significant role in increasing oxygen supply throughout your body.
Is it normal for oxygen levels to drop during exercise? ›
So, back to the original question – does blood oxygen level drop during exercise – yes it does, simply because of the extra demands of the muscles. When you're not exercising, the oxygen saturation level is between 95% and 99%.Does low oxygen damage lungs? ›
The inability to get enough oxygen into the lungs raises the risk of developing hypoxia. Hypoxia is a condition where not enough oxygen makes it to the cells and tissues in the body. Hypoxia can lead to many serious, sometimes life threatening complications.Can anxiety cause low oxygen levels? ›
Background: Stress and anxiety alter respiratory rate and thereby alter oxygen saturation in the blood.What organs are affected by low oxygen? ›
Without oxygen, your brain, liver, and other organs can be damaged just minutes after symptoms start. Hypoxemia (low oxygen in your blood) can cause hypoxia (low oxygen in your tissues) when your blood doesn't carry enough oxygen to your tissues to meet your body's needs.What causes shortness of breath with normal oxygen levels? ›
Shortness of breath is often a symptom of heart and lung problems. But it can also be a sign of other conditions like asthma, allergies or anxiety. Intense exercise or having a cold can also make you feel breathless.How many apneas per hour is normal with CPAP? ›
CPAP, oral appliances and other sleep apnea treatment options are designed to reduce your AHI, but not necessarily eliminate them. That's because it's considered normal for everyone to have up to four apneas an hour. It's also common if your AHIs vary from night to night.Will a CPAP help with low oxygen levels? ›
In theory, your oxygen levels may be improved by your CPAP machine, and measuring your levels at night certainly has no downside. However, you may have had fairly normal oxygen levels prior to starting your CPAP therapy.What number is considered severe sleep apnea? ›
Obstructive sleep apnea is classified by severity: Severe obstructive sleep apnea means that your AHI is greater than 30 (more than 30 episodes per hour) Moderate obstructive sleep apnea means that your AHI is between 15 and 30. Mild obstructive sleep apnea means that your AHI is between 5 and 15.Is low oxygen variation good? ›
In general, variations should be low and if you spot frequent and big variations it could be a sign that you may be experiencing breathing disturbances during sleep. Breathing disturbances during sleep means that you are possibly suffering from sleep apnea.What are good numbers for sleep apnea? ›
Mild: An AHI of at least five events per hour, but fewer than 15. Moderate: An AHI of at least 15 events per hour, but fewer than 30. Severe: An AHI of at least 30 events per hour.
Can Fitbit detect sleep apnea? ›
By tracking an individual's oxygen levels throughout the night, the Fitbit will help predict possible health conditions such as allergies, asthma, and sleep apnea. Depending on the severity of the breathing disruptions, the Fitbit can provide you with recommendations for seeing a sleep specialist.Can low blood oxygen wake you up at night? ›
But it's hard to diagnose because it occurs while you are sleeping. Typically, when your breathing stops, oxygen levels drop in your blood and in your tissues. And when your brain senses the problem, it wakes you up just enough to restore breathing.Do people with sleep apnea have low oxygen during the day? ›
Daytime hypoxemia has been reported to develop in patients with obstructive sleep apnea (OSA).What does high oxygen variation mean on Fitbit? ›
Frequent big variations may indicate that you experience breathing disturbances during sleep. Breathing disturbances can lead to higher than expected variations in blood oxygen levels, which can indicate that your body is not getting enough oxygen while you sleep.How accurate is a Fitbit for oxygen levels? ›
The data provided by Fitbit SpO2 is intended to be a close estimation of your blood oxygen saturation levels, but may not be precisely accurate. You should not use or rely on Fitbit SpO2 for any medical purposes.How accurate is Fitbit at measuring oxygen levels? ›
Last night I wore both. The Fitbit showed my SpO2 range to be 92-98% with an average of 95%.What SpO2 indicates sleep apnea? ›
Medicare requires a 4% drop in blood oxygen saturation in order for a patient to qualify as having sleep apnea, but Johns said clinicians know that a 2% to 3% drop can be “very clinically significant, especially if it occurs in a cyclical fashion.Can a stuffy nose cause low oxygen levels? ›
In our study, patients with nasal obstruction had mild hypoxemia and decreased oxygen saturation. Oxygenation was significantly impaired further with nasal packing (PaO2 slightly decreased while oxygen saturation is significantly decreased during packing).Why do my oxygen levels drop when I walk? ›
O2 drops with exertion because your muscles require more energy when they are active and O2 plays a role in generating that energy. Unfortunately your lungs aren't able to get enough O2 into your bloodstream to feed the demand so your levels drop.How low does your oxygen go when you sleep? ›
Everyone's oxygen levels in the blood are lower during sleep, due to a mildly reduced level of breathing. Also, some alveoli drop out of use during sleep. If your waking oxygen saturation is greater than about 94 percent on room air, it is unlikely that your saturation during sleep will fall below 88 percent.
Can Fitbit detect low oxygen levels? ›
Fitbit SpO2 estimates your average blood oxygen saturation levels and range while you sleep. It's designed to see potential changes to your fitness and wellness.Is 94 a good oxygen level on Fitbit? ›
Over 12 nights of data, the minimum values are between 88% and 97%; the averages are between 93% and 98%; the maximum values are between 95% and 100%. My daytime SpO2 values with a finger pulse oximeter are consistently 96%-98%.How do you increase oxygen saturation? ›
- Stand or sit up straight. Rather than lying down, which may put pressure on your lungs and make it harder to breathe.
- Cough. If you have a cold or the flu, difficulty breathing can decrease oxygen saturation in your blood. ...
- Go outside. ...
- Drink lots of water. ...
- Take slow, deep breaths.
For example, if an FDA-cleared pulse oximeter reads 90%, then the true oxygen saturation in the blood is generally between 86-94%. Pulse oximeter accuracy is highest at saturations of 90-100%, intermediate at 80-90%, and lowest below 80%.Does Fitbit only track oxygen levels while sleeping? ›
The Fitbit Sense can record your blood oxygen levels, but only while you're sleeping. You can't manually take an Sp02 reading at any point — it's all automatically done on your behalf each night after it detects you've fallen asleep.