Pulse oximeter Facts

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 Global health experts have been warning people of the severe risk and complications associated with dangerously low oxygen levels of patients suffering from COVID-19. But a simple device, which is being talked about a lot these days can help patients monitor their oxygen levels at home and prompt them to seek out help sooner. The device is a Pulse Oximeter, which is being called as important as a thermometer, which can help diagnose a problem before it gets any worse. While health experts stand divided on whether people all over should be encouraged to buy a pulse oximeter for home use, it is being used as a go-to gadget during the pandemic.

Pulse oximeter (also called pulse ox) is a non-invasive device that calculates the amount of oxygen in the blood. It is a small device that looks like a clip. You have to press the clip, place your finger (nail side up) inside and within seconds it gives you your readings. Most healthy people get an oxygen reading of around 95 to 99 per cent. Talking about how it works, the oximeter works by sending infrared light into the capillaries in your finger. It measures how much light is reflected off the gases. The readings show the percentage of the saturated blood, called SpO2 levels.


Normal: The normal SpO2 level is between 95 to 100 per cent.

Below normal: A reading below 95 is below normal. If your reading comes below 95, you should talk to your doctor immediately.

Above normal: It quiet unlikely that if you are breathing unassisted, your oxygen levels will be more than normal.



some external factors can affect the oximeter reading. Putting dark nail paint on nails or extremely cold weather can give a false reading. It is recommended to remove any dark nail paint before using an oximeter.


Most commonly the index finger is used to take the reading. So in case you are right-handed, use the middle finger of your right hand and if you are left-handed, use the left middle finger.

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