The fourth step in DRSABCD is to check and ensure the casualty’s Airway is clear of obstructions.
1. Turn the casualty on the side
2. Turn face slightly down and tilt head back
3. Open mouth and look inside for any obstructions
4. Sweep out any obstructions with your fingers
By tilting the head back the tongue is also moved away from the back of the throat and helps clear the airway.
If the casualty’s airway is clear or has been cleared proceed to the next step of DRSABCD. Check the Breathing.