The AED is used in emergency situations to prevent death or permanent disability from cardiac arrest. There are three basic types of AEDs that are used for different purposes. These include the first generation, the second generation, and the third generation AED. Each type of AED has its own advantages and disadvantages. They have been designed to give the patient a chance to survive when their hearts stop beating spontaneously, or if the pulse has stopped and there is no blood left in the heart.
AED – Permanent disability from cardiac arrest
First generation AED is a fully automatic external device that automatically identify the fatal cardiac arrhythmia of pulseless ventricular tachyarrhythmia and ventricular fibrillation, and then immediately delivers atropine to the victim. This is one of the safest AEDs available and is usually the first to be used in emergencies. AEDs have two ways to deliver atropine; either an intravenous route where the drug is injected into the vein, or an oral route, which is delivered to the mouth. Most of the time, the drug is injected directly into the heart, which makes it less dangerous than the oral route. If the cardiac arrhythmia continues to affect the victim, an electrical device called a pacemaker may be placed on them, which will shock them and stop the heart. However, AEDs can only provide temporary help in preventing death from this arrhythmia, and therefore, the victim must be revived by getting medical attention, which in most cases, means that they should be admitted to hospital.
Second generation AEDs are more complicated devices, as well as more expensive than the first generation, but offer much better results. Second generation AEDs do not have pacemakers, so that the person will have to be revived during hospital treatment. This can cause a lot of inconvenience to those who use this type of AED, since it may require the use of an extracorporeal ventricular pump (ECV), which is not usually approved by health authorities. An ECV is needed to pump the aortic shock out of the body, but this can only be done if the ECV is attached to the ventricle, which requires surgery. and may be very dangerous if the person has a cardiac arrhythmia that can be treated with medicines like aspirin.