This happens as the lungs become inflamed and less efficient at absorbing oxygen. One of the most important early signs of COVID deteriorating is a fall in the level of oxygen in the blood. People who do not qualify for this type of hospital-in-the-home type monitoring will still need to monitor their own symptoms at home and seek medical care if needed. So services have been set up for some to be monitored by health professionals at home and only come to hospital if they start to become very unwell. Most people with COVID do not need to be in hospital. What should my heart rate be and what affects it? For healthy people this is 95% to 100%.Īs the oximeter measures blood from the pulse in your finger, it will also display your heart rate (heart beats per minute). This percentage is the “oxygen saturation” level. The oximeter interprets the colour of the blood (via the amount of light absorbed) to provide a number – the percentage of oxygen in the blood compared to the maximum amount that can be carried.
Blood carrying more oxygen (oxygenated blood) is a brighter red than the bluer de-oxygenated blood. This gives a measure of the colour of your blood. One side of the clip shines a light through your finger to a sensor on the other side of the clip. Most types you can buy for use at home are designed like a large clothes peg you clip onto your fingertip. What is a pulse oximeter? How does it work?Ī pulse oximeter is a routine clinical monitor that’s been in use in and out of hospital for years.
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