Blood transports oxygen all around your body, delivering it to cells that use it for energy. A molecule in red blood cells called hemoglobin is used to hold the oxygen.
Red hemoglobin means that it is full of oxygen, so when oxygen levels are being measured, reflecting a bright red light means that these molecules are full of oxygen or are “saturated” with oxygen. This is the SpO2 level. The oxygen levels in our blood should be around 95-100% and so measuring any changes in this is important to keep an eye on conditions such as heart failure, chronic lung disease, or sleep apnea.
Monitoring SpO2 can be done on the spot or continuously. Most over-the-counter finger-clip type blood oxygen monitors have an automatic mode where they automatically turn on when you place your finger in the clip, meaning that it is more difficult to use your fingers or that hand while the monitor is on your finger.
The CardiacSense watch allows you to wear the oxygen monitor all day long without interfering with your hand or fingers. The CardiacSense medical smartwatch checks oxygen saturation when two fingers are placed on the sensors on the watch’s bezel. So, you are able to measure your own SpO2 throughout the day whenever you wish, wherever you are, and whatever you are doing.