Answer
Mar 28, 2025 - 01:41 PM
A SpO2 monitor, or pulse oximeter, measures the oxygen saturation level in the blood by emitting light through a body part, typically a fingertip or earlobe. It uses two wavelengths of light (red and infrared) to detect the amount of oxygen-bound hemoglobin in the blood, calculating the ratio of oxygenated to deoxygenated hemoglobin. The device then provides a reading of the blood's oxygen saturation level, typically displayed as a percentage.
