Desaturation

Desaturation refers to a decrease in the amount of oxygen bound to hemoglobin in the blood, indicating lower oxygen levels. It is typically measured as SpO₂ (peripheral capillary oxygen saturation) using pulse oximetry. When desaturation occurs, the blood carries less oxygen to tissues and organs, which can signal respiratory or cardiovascular issues. Normal oxygen saturation levels generally range from 95% to 100%. A drop below this range may suggest that the body isn't receiving enough oxygen, prompting medical evaluation to identify and address underlying causes such as lung disease, sleep apnea, or heart problems.