What Is a Pulse Oximeter? A pulse oximeter, or pulse ox, is an electronic device that can be attached to your forehead, fingers, nose, foot, toes, or ears. A nurse or medical assistant usually clamps ...

A pulse oximeter measures your blood oxygen levels and pulse. A low level of oxygen saturation may occur if you have certain health conditions. Your skin tone may also affect your reading. Pulse ...

Share on Pinterest A pulse oximetry test may clip to a finger to read blood flow. Every system and organ in the body needs oxygen to survive. Without oxygen, cells begin to malfunction and eventually ...