How to use a defibrillator and save a life

If someone is having a cardiac arrest, a defibrillator can save their life by giving a high energy electric shot to the heart.

Sales of defibrillators rose sharply after footballer Christian Eriksen had a cardiac arrest during Denmark's opening game at Euro 2020.

The NHS has worked with the British Heart Foundation and Microsoft to create a national defibrillator network which shows where you can find these devices across the UK.

All of them are free to use.

But what does a defibrillator do and how does it work?

Defibrillator trainer Helen Tennant explains.

Video by Health, Science and Environment Video Journalist: Laura Foster

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