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We've looked at the HeartSine 500, or AEDs with help, and now we're going to look at the HeartSine 350, and these are AEDs without CPR help. Now they're basically set up the same. We're going to run through exactly what the unit says, and it will be exactly the same as the other unit up until the point you're delivering the CPR. Once you've done the shock, or if there's no shock advised, it's just going to say, "Continue in time with the metronome." It's not going to give any guidance on good compressions, on speed, on that, for this unit doesn't work that way. So, just start the cycle off, and you'll hear how the cycle progresses.

One adult patient called for medical assistance. Remove clothing from patient's chest to expose bare skin. Pull green tab to remove pads. Peel pads from liner. Apply pads to patient's bare chest, as shown in picture. Press pads firmly to patient's bare skin.

So, up to now, it's exactly the same, it's gone through the same process of putting the pads on in the same way. It is now at the point where the pads are in place, and then it's going to go through the analyzing cycle. So, we'll just listen to the analyzing cycle next.

Assessing heart rhythm. Do not touch the patient. analysing. Do not touch the patient. Stand clear of patient. Shock advised. Stand clear of patient. Press the orange shock button now. Shock delivered, begin CPR. It is safe to touch the patient. Place overlapping hands in middle of chest, press directly down on the chest in time with metronome. Remain calm.

It still analyzed in the same way. It still recommended to give the shock, but when we come to the actual CPR it's just saying, "Can't keep in tune with the metronome." The important thing with this metronome, the other one will help you more, but you need to really concentrate on the metronome and push down when you hear it beeping, and very quickly, you'll get into the flow of things. Within seconds you'll be doing perfect speed compressions. The only thing you need to remember is make sure these compressions are deep enough, five to six centimetres, and we need to make sure we push down on that chest enough, and also make sure that you release fully. So, when you're pushing down it's just as important that you release fully so that the heart fills back up with blood. So, what we do with this unit, is we just continue on in two minutes it will come through another, it will tell you to stop, do not touch the patient, you'll keep yourself clear, and it'll do another analyzing cycle and tell you whether shock advised. The units without CPR help will work just the same as far as the technical side of starting the heart, but what they don't do is give you that direct feedback.