Fingertip Pulse Oximeter
Oximeter or more precisely called pulse oximeter is a device that painlessly measures the oxygen saturation i.e. the amount of oxygen in your blood. It detects how rapidly and efficiently the oxygen is carried to all your organs including your legs and arms from the heart. The gadget is like a tiny clip that is attached to certain body parts like fingers and toes to read oxygen levels. It gives off light through the transparent portion of the skin that is caught by the detector on the opposite side. The oximeter readings are developed by measuring the changes of absorption of oxygenated and deoxygenated blood. So, it can tell the pulse rate along with oxygen saturation level.
The two readings on pulse oximeters are SpO2 and pulse rate. The former indicated the percentage of oxygen saturation in blood while later indicates the number of times our heart beats per minute.