An estimate of haemoglobin oxygen saturation measured by pulse oximetry.
What it means
An estimate of haemoglobin oxygen saturation measured by pulse oximetry.
Clinical context
SpO2 is commonly used in Observations, Respiratory assessment. The exact meaning can depend on specialty, region and local documentation practice.
Learning note
Use the full term when clarity matters, especially in formal assignments, prescriptions, handover and patient-facing communication.