By Apollo 24/7, Published on - 25 June 2020
The novel Coronavirus causes respiratory illness in affected patients. People who are at high risk of severe illness due to COVID-19 are likely to get pneumonia which may develop to hypoxemia. Pneumonia is a lung inflammation in which air sacs fill with pus which may become solid. Hence, it affects the rate or volume of air entering the lungs. The alteration in air entry into the lungs leads to reduced oxygen saturation (amount of oxygen in the blood) which is called hypoxemia.
Hypoxemia can be checked by obtaining a blood sample which is then tested in a medical laboratory. Alternatively, it can be measured non-invasively by an instrument known as a pulse oximeter. A pulse oximeter is a small device that clips onto a finger and can measure oxygen saturation (SpO2) easily in a few seconds. Normal oxygen saturation of blood in a healthy individual is 95% to 100%.
The severity of illness in COVID-19 patients can be mild, moderate, or severe, as explained here:
There have been cases of COVID-19 patients who have not experienced breathlessness but have been tested with significantly low levels of oxygen when checked. The oxygen depletion may not be apparent immediately in such people since Coronavirus attacks the lungs in a way that the patient gradually gets less oxygen over time. These patients may slowly adjust to low levels of oxygen and may not have noticeable breathing difficulty, but can eventually lead to complications. In such cases, using an oximeter can help by cautioning the patient to visit the hospital before their condition worsens.
With the rapid increase in COVID-19 cases every day, many health professionals are suggesting home quarantine for mild and pre-symptomatic patients. They are advised to monitor their symptoms along with body temperature, pulse, blood pressure, and directed to report to a medical facility if their health worsens. For such people, regular monitoring of SpO2 with a pulse oximeter, as recommended by a doctor, may detect a drop in blood oxygen even before it reaches distress levels.
The pulse oximeter is a simple and less expensive way to spot potential respiratory complications. However, one must always remember that it is not a substitute for a doctor’s consultation. Although at-home health monitoring has evolved, it still cannot replace the hands-on physical examination by a doctor. Hence, a person who wishes to use it should get direction on its use and understand how to interpret the values.
The pulse oximeter must be used correctly for it to detect the oxygen saturation accurately. Here are a few instructions:
Coronavirus may not always cause obvious breathing problems even when patients are heading towards respiratory distress. A simple device like a pulse oximeter may help to catch early warning signs and detect trouble before complications arise. Although many health care professionals advise it is better to use the pulse oximeter after consulting an expert, it can be an important part of the Coronavirus home health kit.
If you have any questions related to Coronavirus, you can consult our team of expert doctors through online doctor consultation.
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