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A defibrillator is a device that gives a high energy shock to the heart of someone who is in cardiac arrest.

How to use a defibrillator:

If someone is in cardiac arrest, call 999 and start CPR. If you're on your own, do not interrupt CPR to go and find a defibrillator. If it's possible, send someone else to find one. When you call 999, the operator can tell you if there's a public access defibrillator nearby.

Anyone can use a defibrillator. You do not need training. Once you turn it on, it will give clear step-by-step voice instructions.

Many defibrillators also have visual prompts and images showing how to use it.

The device checks the person’s heart rhythm and will only tell you to give them a shock if it’s needed. You cannot shock yourself or someone else accidentally.


Steps to using a defibrillator


Step 1: Press the green button to switch on the defibrillator and follow the instructions.


Step 2: Remove the person’s clothing above the waist. 

You might have to remove a person's bra by slipping the straps down or cutting it off. Most defibrillator packs have tools like scissors to help you to do this. It might feel odd or embarrassing but do not let that stop you. Remember, this is a life-or-death situation. 


Step 3: Peel off the sticky pads and attach them to the person’s bare skin. Put one pad on each side of the chest as shown in the picture on the defibrillator.


Step 4: Once you have attached the pads, stop CPR and do not touch the person. The defibrillator will then check the person’s heart rhythm.


Step 5: The defibrillator will decide whether a shock is needed. If so, it will tell you to press the ‘shock’ button. An automatic defibrillator will shock the person without you needing to do anything. Do not touch the person while they’re being shocked.


Step 6: The defibrillator will tell you when the shock has been given and whether you need to continue CPR.


Step 7: If the defibrillator tells you to continue to do CPR, continue with chest compressions until the person shows signs of life, or the defibrillator tells you to stop so it can analyse the heartbeat again.

Source: British Heart Foundation

There are 2 defibrillators in Treuddyn. 


Access may be obtained by calling 999 to request the access code.


The defibrillator is located in the main hall of the community centre.


The defibrillator is located on the wall outside the school main gates.

Find defibrillators in the UK:

Formal defibrillator training may be available from time to time. Please get in touch to register your interest in training.

Free e-learning basic awareness courses are available online from St John Ambulance. Click below to create a free account.


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