What is the definition of oxygen saturation?

Oxygen saturation specifically refers to the percentage of hemoglobin binding sites in the bloodstream that are occupied by oxygen. This measurement is crucial because it indicates how much oxygen is being transported in the blood, which is vital for assessing a patient's respiratory and overall health. The body relies on hemoglobin, a protein in red blood cells, to carry oxygen from the lungs to the tissues. Measuring oxygen saturation allows healthcare providers to determine whether a patient is receiving enough oxygen to meet their physiological needs.

This definition is particularly significant in clinical settings, where maintaining an adequate level of oxygen saturation is essential for patient care. Levels typically range from 95% to 100% for healthy individuals, and values below this range can indicate respiratory issues or other health problems that may require intervention. Thus, understanding this concept helps in diagnosing, monitoring, and managing various medical conditions related to oxygen uptake and utilization in the body.