What does SpO2 measure?

SpO2 measures the oxygen saturation level of hemoglobin in the blood. This value indicates how much oxygen is being carried by hemoglobin in relation to its maximum capacity. An SpO2 reading is typically obtained through a non-invasive device called a pulse oximeter, which uses light wavelengths to assess the percentage of hemoglobin that is saturated with oxygen. This measurement is crucial in clinical settings, as it helps healthcare providers determine whether a patient is receiving adequate oxygenation, which is vital for cell function and overall health. Monitoring SpO2 is essential, especially in patients with respiratory issues or those recovering from anesthesia, to ensure they are maintaining an appropriate level of oxygen in their blood.