Close-up of a patient monitor displaying oxygen saturation levels, with a focus on the detailed readout. The image highlights the critical monitoring of vital signs in a clinical setting

Close-up of a patient monitor displaying oxygen saturation levels, with a focus on the detailed readout. The image highlights the critical monitoring of vital signs in a clinical setting.

Santamedical Generation 2 Fingertip Pulse Oximeter Oximetry Blood Oxygen Saturation Monitor with Batteries and Lanyard

Oxygen Saturation Sp O2 Gauge Meter Showing Normal Range With Blue Grid Background SpO2 hypoxemia

Saturation (the level of oxygen in the blood) is measured using a pulse oximeter.

Oxygen saturation: normal and pathological values

In this final part, we look at how to measure oxygen saturation before giving oxygen. Taking a baseline reading is essential, as levels can rise quickly once oxygen is administered. A small, simple tool — but a critical step in emergency care. Missed Part 1 or 2? Find them on our profile. Follow us for more training content. | Scuba Scape