Oxygen saturation (SpO2) | Monitoring
Oxygen saturation (SpO2) To monitor the oxygen content of the blood, the patient is usually fitted with a special clamp (pulse oximeter) on one finger of one hand. This clamp emits red light of different wavelengths. Since the blood absorbs different wavelengths depending on oxygen saturation, the device can determine a saturation value from this. … Oxygen saturation (SpO2) | Monitoring