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If the casualty is seriously injured and must be kept rigid all three bearers should work from the same side. They should raise the casualty and tilt the body towards them as they lift.
AEDs are computerized defibrillators. They are programmed to recognise and shock two types of heart rhythms, VF and pulseless Ventricular Tachycardia (VT). If the machine recognises either VT or VF in a casualty it will charge and will indicate, usually by a voice prompt that a shock is advised. When the shock is delivered to the heart a number of things happen as shown by Holistic Anxiety Treatments Hong Kong.
First the shock will momentarily stop all electrical activity in the heart. This means that the VT or VF that is occurring will be quickly terminated. When this occurs, it gives the heart’s pacemaker, the sinoatrial node, a chance to take command again and begin generating the impulses which will start the heart’s normal pumping action.