For starters, a pulse oximeter may be defined as a device that helps you determine the amount of oxygen your blood is carrying. It is quite a fast and accurate way to get this information without having to use a needle for taking a blood sample and then wait for the lab to process the results.

All you have to do is put the small clip of the device on the end of your finger (sometimes it is put on your earlobe or toe). The oximeter then shines a beam of light through your skin, estimating your oxygen level by measuring the percentage of your blood that is carrying oxygen. This oxygen level is then displayed on the screen of the device. These devices are used in hospitals, doctor’s offices or clinics. However, since the outbreak of the pandemic, healthcare professionals have recommended that some patients use this device at their home, especially people who suffer from a condition that affects their oxygen levels. Some more examples include people suffering from long-term heart or lung disease, or COVID-19 itself.

Why is a pulse oximeter used for COVID-19 at home?

If you have a low blood oxygen level, you are likely to feel some symptoms such as shortness of breath or fatigue. However, with COVID-19, you might not have these symptoms from a low oxygen level. So, your doctor would suggest you keep checking your oxygen level at home at regular intervals. This can help you determine if you need immediate medical attention or not, even if your body doesn’t show any symptoms.

How to use a pulse oximeter at home?

First of all, make sure that the oximeter has batteries. Next, turn it on and clip the device at the end of your finger, with your nail facing up. The oximeter will then take a few seconds and then display the results on the screen.

A typical oximeter tends to give two results, your blood oxygen level (SpO2) and your pulse rate (PR). If you have any doubts, you can contact your doctor to know what numbers are normal for you. However, you must remember that you should not have cold hands or wear nail polish or artificial nails because then the device might fail to give you any results. So, make sure to warm your hand and remove any artificial nail or nail polish, or try a different finger altogether.

Your doctor is likely to suggest that you check your oxygen levels at least a couple of times a day using a pulse oximeter at home, especially during exercises and when you feel that your symptoms are getting worse. Keep a record of your oxygen levels throughout the day in case you would be required to show it to your doctor.

So, now that you know how to use this device, you should buy one from a reliable supplier and make sure to keep your symptoms in check.