Clear the airway

Check the patient, ensure airway is clear

Give oxygen

If not already receiving high concentration oxygen start it now

Check equipment

Saturation probe disconnected / poor contact

Oxygen source disconnected / exhausted

Endotracheal tube blocked / displaced

Ventilation device malfunction

When the airway is clear & equipment
failure is not the cause...

Identify and treat the cause of hypoxia

This may be respiratory or cardiovascular

A pulse oximeter measures oxygenation NOT ventilation
The CO2 may still be rising, indicating repiratory failure,
when the oximetry reading is near 100%

(C) 2001 Crown. All rights reserved