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Technology Apple Watch Blood Oxygen app: How it works and how to use it

17:25  01 october  2020
17:25  01 october  2020 Source:   cnet.com

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The Blood Oxygen app on your Apple Watch will occasionally measure your blood oxygen levels if background measurements are on. This will usually happen when you are not moving. Depending on how active you are, the number of readings collected each day and the time between these readings

When Apple Watch detects low blood oxygen saturation below a certain threshold, a The feature is one that competitors have already tackled, including Fitbit which is being acquired by Google, although Apple could potentially offer a more sophisticated version using the same FDA approval method as

The new Apple Watch Series 6 comes with a blood oxygen sensor and an accompanying app to give you more ways to monitor your heart and respiratory health. Together they measure your oxygen saturation (SpO2) in your blood -- how much oxygen from your lungs your red blood cells pick up and transport to all of the other parts of your body.

a close up of a cell phone: Apple © Provided by CNET Apple

Low blood oxygen levels, or hypoxemia, have been linked to COVID-19 because the disease affects your ability to get enough oxygen. Doctors have used SpO2 levels to determine the severity of COVID-19 cases and treat those patients accordingly.

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Apple today announced Apple Watch Series 6, featuring a Blood Oxygen sensor and app , new case finishes, Family Setup with watchOS 7, and more. Cupertino, California — Apple today announced Apple Watch Series 6, introducing a revolutionary Blood Oxygen feature that offers users even more

Apple Watch Series 6 has a new blood oxygen sensor and app , and an enhanced Always-On Retina display. Apple Watch Series 6. The future of health is on your wrist. Measure your blood oxygen level with a revolutionary new sensor and app . Incorporated into the completely redesigned back crystal, this new sensor works in concert with the Blood Learn how to use the Blood Oxygen app .

But hypoxemia can be caused by many other heart and lung issues, such as asthma, pneumonia and congenital heart disease. By monitoring your SpO2, your Apple Watch might be able to warn you of potential health issues before you realize you have them, or at least that's Apple's hope, anyway.

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An unofficial community to discuss Apple devices and software, including news, rumors No spam. Self-promotion is allowed on Saturdays only and strictly reserved for app developers. iPhone and was re-pairing it said I can’t use ECG because I’m 18 despite it working perfectly since I was 17, bit How do you suggest that even happen? The battery is wedged between the display and the health

The Apple Watch may soon be able to measure blood oxygen levels. As per a new report, Apple is likely developing two new health features for its The ability to detect blood oxygen saturation is growing increasingly common among smartwatches. Fitbit brought it in January earlier this year to a

Here's how to use the Blood Oxygen feature on the Apple Watch Series 6 -- it's currently only available for the Series 6, not any other models. Also worth noting that Apple says on its website the Blood Oxygen app isn't available in all countries or regions. You'll be able to see when you set up the app if you can use it or not.

a close up of a cell phone © Screenshot by Sarah Mitroff/CNET

How does the blood oxygen sensor work?

The blood oxygen sensor is built into the back of the Apple Watch. It uses four clusters of red, green and infrared LED lights and four photodiodes, devices that convert light into an electrical current. The lights shine onto the blood vessels in your wrist and the photodiodes measure how much light bounces back.

I won't get into the medical specifics, but essentially oxygenated and deoxygenated blood absorb red and infrared light differently, so the light that bounces back allows the Apple Watch to determine the color of your blood.

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It works with your iPhone to help you create a schedule and bedtime routine so you can meet your Apple Watch automatically detects when you’re washing your hands and encourages you to go for a full Blood Oxygen app measurements are not intended for medical use , including self-diagnosis or

It works with your iPhone to help you create a schedule and bedtime routine so you can meet your Apple Watch automatically detects when you’re washing your hands and encourages you to go for a full Blood Oxygen app measurements are not intended for medical use , including self-diagnosis or

Bright red blood is oxygenated, while dark red blood has less oxygen, either because it's been delivering oxygen to your organs and muscles or it's not getting enough oxygen from your lungs.

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Blood Oxygen app . ECG. Irregular Rhythm Notification. The international emergency calling feature requires an Apple Watch Series 5 (GPS + Cellular) model. Device must have been setup for cellular service with a carrier but does not require an active cellular plan. https

Using your Apple Watch and a paired blood pressure monitoring cuff gives you fast, accurate readings and can help you avoid blood pressure spikes that can occur when the test is conducted in a The water drop icon on your Apple Watch means that Water Lock is enabled — here's how to turn it off.

If you want to dig into exactly how pulse oximeters work, check out this article published in the Respiratory Medicine medical journal.

How do you use the Blood Oxygen app?

a watch on a cellphone: Apple © Provided by CNET Apple

With the Apple Watch Series 6, you can get an on-demand reading of your SpO2. To get started, Apple says to make sure the wrist fits snugly on your wrist, but still feels comfortable.

Next, open the app and follow the prompts on the screen. Make sure your wrist is flat and the watch is facing up. Stay still while the Apple Watch starts the reading.

The reading takes 15 seconds, and once it's done you'll see the percentage of oxygen in your blood pop up on the watch screen.

According to Apple, to get the best results you should rest your arm on a table or in your lap and make sure the watch sits flush with your wrist. If your wrist bone gets in the way of that, move your watch up your arm.

You can set up background measurements so that your Apple Watch takes periodic readings throughout the day when you're inactive, like when you're lying on the couch or sleeping. You can toggle on that setting in the Blood Oxygen app.

All of your blood oxygen readings will sync to the Apple Health app.

Factors that can affect the reading

As with any biometric sensors on a watch, there are various factors that can affect the results you get from the Blood Oxygen app.

People with tattoos on their wrist may get false readings because the tattoo ink can make it hard for the light to reach your blood vessels. The amount of blood flowing through your skin, which can be affected by the temperature around you and varies from person to person, can also affect the results.

It's also important to stay still and have your arm resting with your fingers relaxed to get an accurate reading. If your arm is hanging by your side or your hand is making a fist, Apple says that you might not be able to get a reading.

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