Answer
Mar 04, 2025 - 12:38 PM
A pulse oximetry probe works by emitting two wavelengths of light, usually red and infrared, through a body part like a fingertip or earlobe. It measures the amount of light absorbed by oxygenated and deoxygenated hemoglobin, calculating the ratio to estimate blood oxygen saturation (SpO2) levels. The probe also detects the pulse rate by measuring changes in blood volume during each heartbeat.
