How To Use A Defibrillator

Knowing how to use a defibrillator can make the difference between life and death. In the UK, more than 30,000 people suffer an out-of-hospital cardiac arrest every year. Without immediate treatment, survival rates are very low. Quick access to CPR and a defibrillator can more than double the chances of survival.

Many people hesitate because they worry about doing something wrong. The reality is that modern defibrillators are designed for anyone to use, with step-by-step voice instructions. This guide explains exactly how to use a defibrillator with confidence.

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What is a Defibrillator?

A defibrillator, also called an Automated External Defibrillator (AED), is a portable device that checks the heart rhythm and delivers a shock if needed. This shock can restart a normal rhythm when the heart has stopped.

AEDs are safe and straightforward. You do not need medical training to use one. Many models provide clear voice prompts and visual cues, guiding you through every step.

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Step-by-Step: How to Use a Defibrillator

1. Check for Safety and Responsiveness

Make sure the area is safe for both you and the casualty. Gently shake their shoulders and ask if they are okay. If there is no response, call 999 immediately or ask someone nearby to do so.

2. Begin CPR

If the casualty is not breathing normally, start CPR without delay. Push hard and fast in the centre of the chest at a rate of 100 to 120 compressions per minute. If someone else is available, one person should continue CPR while the other fetches the defibrillator.

Learn more about how to perform CPR.

3. Switch on the Defibrillator

When the defibrillator arrives, open the case and switch it on. Most devices have a power button or turn on automatically when the lid is opened.

4. Follow the Instructions

The device will give clear voice instructions. Follow each step carefully.

5. Attach the Pads

Expose the casualty’s chest. Cut away or remove clothing so that the sticky electrode pads can be placed directly on the skin.

• One pad goes below the right collarbone

• The other goes on the left side of the chest, just under the armpit

If the casualty has a lot of chest hair where the pad needs to go, use the razor from the AED kit to quickly shave the area.

6. Allow the AED to Analyse

Once the pads are in place, the AED will analyse the heart rhythm automatically. Do not touch the casualty during this stage.

7. Deliver the Shock if Advised

If the AED advises a shock, check that no one is touching the casualty. Press the flashing shock button when prompted. If the device is fully automatic, it will deliver the shock without needing you to press anything.

8. Continue CPR

After the shock, or if no shock is advised, continue CPR immediately. Keep following the AED’s instructions until emergency services arrive or the casualty begins breathing normally.

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Using a Defibrillator on Women

Sadly, women are less likely to receive CPR or defibrillation in public than men. This is often due to hesitation around clothing removal. When someone is in cardiac arrest, every second matters and saving their life must come first.

To use a defibrillator on a woman:

• Remove or cut away clothing from the chest so the pads stick directly to the skin

• Remove bras if they interfere with pad placement, especially those with underwires or padding

• Place the pads as shown: one just below the right collarbone, the other under the left breast to the side of the chest

• If breasts are large, lift slightly to ensure good contact between the pad and skin

Defibrillators are designed to guide you through the process, and modesty should never delay life-saving action. Learn more about breaking down barriers with our #NoBraNoBarrier campaign.

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Why Defibrillators Are Safe to Use

Defibrillators are completely safe. They only deliver a shock if the heart rhythm requires it, so you cannot harm the casualty by using one. The most important thing is to act quickly and follow the prompts.

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Where Can You Find a Defibrillator?

Defibrillators are increasingly available in public places such as workplaces, schools, sports facilities, train stations, and shopping centres. They are often kept in bright green or yellow cabinets with the letters “AED” clearly displayed.

Businesses and community groups can play their part in saving lives by installing a defibrillator and registering it. Find out how to make your workplace a Heart Safe Location.

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Knowing how to use a defibrillator gives you the confidence to act quickly in an emergency. With clear voice prompts, easy pad placement, and simple instructions, anyone can use an AED to help save a life.

At Defib Supplies, we provide a wide range of defibrillators and accessories to help make your workplace, school, or community safer. Explore our range today and take the first step towards being heart safe.