Automated external defibrillator (AED)

If an AED is available at the scene, don’t be afraid to use it. The AED is safe and effective in your hands too. Follow its voice instructions without delay. A standard automated external defibrillator is suitable for adults and children over 8 years of age.
Ensure that you, the casualty and any other witnesses to the incident are safe. Assess the condition of the casualty.
- If the casualty is unresponsive and not breathing properly, ask someone to call for help and bring an AED if available. Conduct CPR in a sequence of 30 chest compressions and 2 rescue breaths.
If you are alone and the AED is nearby, start by plugging it in.
Switch it on and stick the electrodes on the exposed chest of the casualty.
If more than one person is assisting, perform CPR while another person is applying the electrodes.
Follow the AED’s voice/visual commands without delay.
Ensure that no one is touching the casualty while the AED is performing rhythm analysis.
If discharge is recommended:
- make sure no one is touching the casualty,
- press defibrillation button as directed,
- after the discharge, immediately start CPR,
- continue following further voice/visual instructions from the AED.
If discharge is not recommended:
- immediately start CPR,
- continue to follow further voice/visual commands from the AED.
Follow AED commands until:
- the casualty starts to respond (moves, opens eyes, starts breathing properly),
- an emergency medical team or other emergency services arrive,
- you lose strength.