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Please watch the full demonstration for use of the HeartSine 350 AED. The demonstration is broken down into individual stages to make it easier to follow, so that you know exactly what to do. In a real-life emergency situation, you would need to work much more quickly.

The HeartSine 350 is very similar to the HeartSine 500 the main difference is that the 350 does not provide the CPR guidance, it has a metronome to help you to keep your compressions at the correct rate.

The training scenario starts from the point where the AED becomes available.

The pads need to be put onto bare skin, so remove any clothing needed to expose the chest this would include bras or vests.

Look for any signs of a pacemaker, if the patient is wearing jewellery remove it, look for any patches, some have metal in them. We don’t want the shock to be transferred through a necklace and not through the heart.

In reality if there are two of you, one could prepare the AED, while the other continues CPR. It is crucial to keep the CPR cycle going the whole time.

The quicker to AED is ready the better, every minute without it, the chance of survival drops 10%.

When the checks for jewellery are complete and the chest is exposed.

• Turn the AED unit on
• Place the pads where instructed in the images
• Follow the voice prompts

Remember you should not touch the patient when the AED is assessing heart rhythm as it may pick up your pulse.

Make sure everyone is clear before pressing the button to shock.

The AED unit will give you instructions, it will tell you when to start CPR, keep in time with the metronome, concentrate on it pushing down five to six centimetres and releasing fully. Stop CPR when advised so that it can analyse and provide prompts.

If the voice prompt says “no shock advised” it may be that the first shock has worked and they are starting to show signs of life, or delivering a shock won’t work.

In this instance you would continue to perform CPR until the emergency services arrive or you are too tired to continue.