The set of vital signs the Everion delivers are calculated from the physiological signals that can be measured using PPG (photoplethysmography). The algorithms of the Everion are constantly tested and evaluated in our Algorithmics Lab. Biovotion is dedicated to deliver quality and accuracy to the consumer as well as to power users. At Biovotion everybody is testing the devices under all kinds of conditions and we are working hard to improve the algorithms.
Heart rate and oxygen saturation are clinically validated vital signs. The following vital signs are considered auxiliary values with no direct clinical relevance:
- Skin blood perfusion is an indicator of the perfusion of the skin under the device
- Activity tracks the general activity level of the wearer of the device
- Skin temperature measures the temperature of the skin under the device. This temperature cannot be used as a substitute for a core temperature measurement
- Barometric pressure tracks altitude changes of the wearer while he is wearing the device
- Electrodermal activity measures the conductivity (sweat or sudomotor activity) of the skin