how to measure the oxygen level in the blood?

People who have been treated for a Covid-19 infection may have seen their doctors use an oximeter. This small clothespin-like device attached to the tip of the index finger can measure the oxygen level in the blood. Its sensors can in fact signal the flow in the blood capillaries, through the skin. The models can be used at home and cost around twenty euros in the pharmacy.

Pay attention to severe forms of the disease

“When you are sick you don’t move much, you don’t use your lungs a lot,” explains Dr. Jacques Battistoni, president of the French Federation of GPs. According to him, resting at home can reduce our attention to breathing difficulties. Therefore, the use of an oximeter allows to have an objective measurement of the oxygen level in the blood. “We know that below a certain threshold, we actually have significant respiratory distress that requires quick medical advice.”

Buying an oximeter is not essential for all Covid-19 positive people. The device is particularly suitable for severe symptoms, such as severe cough or difficulty in breathing, and for people at risk. Doctors are in the best position to recommend them to their patients. The purchase is not reimbursed by social security.