Answer
Mar 04, 2025 - 12:38 PM
A reflectance pulse oximeter measures blood oxygen saturation by emitting light into the skin and detecting the light that is reflected back. It uses two different wavelengths of light, typically red and infrared, to differentiate between oxygenated and deoxygenated hemoglobin based on their distinct absorption properties. The device then calculates the oxygen saturation by analyzing the ratio of absorbed light at these wavelengths.
