This video explains how a pulse oximeter works to measure a patients' oxygen saturation (O2 sat). Also check out these videos: How does a Pulse Oximeter work? https://youtube.com/shorts/yqTlhnjcka8 How to measure Oxygen Saturation: https://youtube.com/shorts/m4IjcsOTimk How to make sure the Pulse Oximeter data is correct: https://youtu.be/37O4S7VngGY Alternate Sites for measuring Oxygen Saturation: https://youtube.com/shorts/qMls2ixh9xw Types of Pulse Oximeters: https://youtu.be/EvQ-1Hp