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Whats Is pulse oximeter:

A pulse oximeter is a small device that typically clips on to your finger, toe, or earlobe to measure oxygen levels in the blood.

Pulse oximetry is a quick and easy way to determine how well oxygen is being sent from the heart and lungs out to the furthest parts of the body, which can help determine if your heart and lungs are functioning properly.

Pulse oximeters can be used to gauge warning signs for chronic lung or heart conditions and may help determine whether you should seek medical attention for the coronavirus. Here's what you need to know about what exactly a pulse oximeter measures, how it works, and how you can use it properly.


What does a pulse oximeter measure?

A pulse oximeter measures the oxygen saturation of your blood. Essentially, this percentage is a calculation of how much oxygen is in the blood, with 100% being 'fully saturated' and the optimal level. And while this simple non-invasive medical tool is available over the counter in many pharmacies, it's not necessary for most people. "Unless you have a chronic heart or lung condition that affects your oxygen saturation on a regular basis, most individuals don't need one in their home," says Albert Rizzo, MD, Chief Medical Officer for the American Lung Association.

How does a pulse oximeter work?

To get the most accurate reading on a pulse oximeter, there are a few simple steps, according to the World Health Organization:

Position the probe correctly.

Depending on the device, this will usually be on the finger, toe, or earlobe. Make sure it is well-fitted, and not being forced on: for example, try the second toe rather than the big toe. If the probe is too loose or too tight, it may allow extra light in, which will impact the reading.
Make sure you're sitting still.

Shaking or shivering will affect the reading, and may make it seem much lower than it actually is.

Remove any nail polish.
If you're wearing colored nail polish, this might affect the reading. Finger tattoos or henna dye can also affect the reading: in this case, choose a different finger, toe, or earlobe. Cold fingers or toes can also cause false readings.

In addition, if your pulse oximeter reading drops during exercise, Rizzo says it can be a sign of an underlying lung or heart condition and you should speak with your doctor.

Types of Pulse Oximeters:

✅Finger Pulse Oximeters
✅Wrist Pulse Oximeters
✅Handheld Pulse Oximeters


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