- Aim for target saturations of between 94 – 98% for critical conditions requiring supplemental oxygen, maintained via bag-valve-mask or reservoir bag.
- In patients with COPD or other conditions requiring controlled or low-dose supplemental oxygen aim for target oxygen saturations range of 88 – 92% (or the patient’s prescribed range).
- If the patient is hypoxaemic, oxygen saturations of between 94 – 98% should be maintained through the use of a mask or nasal cannulae as appropriate.
At the correct flow rate the following devices will deliver the following approximate FiO2:
|Mask||Fraction of Inspired O2 (FiO2)||Flow-rate|
||24 - 35%||1 - 4 litres per minute|
|Simple face mask
||40 - 60%||5 - 8 litres per minute|
||60 - 100%||10 - 15 litres per minute|
||100%||15 litres per minute|