pulse oximetry technology uses the absorption of light by hemoglobin and the pulsatile pattern of blood flow in the arteries.
The pulse oximeter uses a sensor that shines light of two wavelengths, red and infrared, on a part of the body that is relatively thin and has good arterial pulsatile blood flow, usually a finger or earlobe. It has a light detector which, together with a microprocessor, compares and calculates the differences between oxygen-rich hemoglobin and oxygen-poor hemoglobin.
Characteristics:
Measurement of blood oxygen saturation (Sp02%) and heart rate