Definition: Pulse oximetry is a non-invasive method of determining oxygen saturation, or the oxygen level in the blood. It is measured by a disposable probe or sensor that is placed on the forehead, earlobe, fingertip or bridge of the nose, or a re-useable finger pulse oximeter monitor. Normal oxygen saturation levels range between 95% to 100%. Oxygen saturation levels in COPD are typically lower.
Also Known As: Pulse Ox