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What Does a Defibrillator Do? The Purpose of an AED

Defibrillator Training: What You Need to Know

what does a defibrillator do

Cardiac arrest is a life-threatening emergency that can cause a range of cardiac abnormalities such as arrhythmia range cardiac abnormalities - ventricular fibrillation, and non-perfusing ventricular tachycardia. For healthcare workers who care for cardiac arrest patients, training on AED use is critical to defibrillate them and restore heart rhythm successfully. This blog will cover an AED and the benefits of taking a training course on its use. We will also provide information on signposting healthcare workers for such classes and the importance of such training in preventing cardiac arrest.

What is the Purpose of an AED (Automated External Defibrillator)?

In first aid, AED stands for ‘Automated External Defibrillator’. If you encounter a situation where a cardiac arrest may occur, it's essential to know how an AED works. This machine helps save lives by providing mechanical chest compressions to people who have had a heart attack. To use an AED, you must first be trained and certified. Both forms of training require participants to complete an exercise test before receiving actual training on how to use the AEDs in emergencies. AED is an automated machine that analyses the heart, so get trained and certified so you can be a lifesaver!

Untrained or briefly trained laypersons can use automated external defibrillators (AEDs) because they contain technology for analysing heart rhythms. As a result, a layperson can rely on the AED to determine whether a beat is shockable. Making AEDs publicly accessible, AEDs have improved the outcomes of out-of-hospital cardiac arrests.

AEDs are used by trained healthcare personnel less often than manual external defibrillators, according to recent research and does not improve mortality in patients with in-hospital cardiac arrests. Delivering effective CPR may be delayed by AEDs. Stopping chest compressions and providing rescue breathing are standard requirements for diagnosing a rhythm with an AED. As a result, certain guidance bodies, such as the European Resuscitation Council, recommend using manual external defibrillators instead of automated external defibrillators when manual external defibrillators are accessible.

Many first responders carry defibrillators, including firefighters, police officers, and security guards.

A semi-automatic AED detects if a shock is required. After the machine tells you that shocking the casualty is needed, the rescuer must press a button to administer it. The AED will detect the heart rhythm is automatically diagnosed, and the user must step back while the AED device delivers the shock. Defibrillator advanced features, such as a manual override or an ECG display, are available on certain types of AEDs.

Cardiac arrest is a life-threatening situation caused by abnormal heart rhythm (cardiac arrest) is a life-threatening situation caused by impaired heart function. In most cases, ventricular fibrillation (vFib), or irregular, fast heartbeats, leads to sudden death. If you're ever faced with this emergency and can't save yourself, an automated external defibrillator - AED - may be able to help. AEDs work by delivering an electric shock directly to the heart's cells – specifically those that control heartbeat rhythm – to restart it and restore blood flow. Using a defibrillator can prevent death in almost 80% of cases!

What should you know before using an AED?

Before using an AED, you must ensure that everyone in your business knows how to use it. Not only is it a lifesaving device, but also, following the proper lifesaving procedures, you will ensure that you're able to administer emergency care swiftly and effectively. Use an AED if available when you treat cardiac arrest patients. If necessary, the AED will provide Shock treatment within five minutes of cardiac arrest onset; after this time, survival falls drastically from 50% to 2%. Always remember the health and safety precautions when using a defibrillator., i.e., you and other first aiders do not touch the casualty when the heart receives an electric shock. Also, never hesitate to contact your nearest ambulance service for further instructions or assistance.

Guidelines for using an AED

Guidelines for using an AED are as follows: - Employees should be trained annually and receive refresher training every three years. Ensure that the AED is in good working order before use; always call 999 or 112 when an AED is needed, as you will need the code to unlock the AED out of its cabinet.

Manual AED models

Healthcare professionals operate manual models of defibrillators with an ECG to find out the cardiac rhythm.

Cardiac arrest, heart attack, and AED Manual external defibrillators require the expertise of a healthcare professional. Some AEDs equipped with an electrocardiogram (ECG), which may be external or built-in. The cardiac rhythm is first identified by a healthcare professional, and the electrical shock voltage and timing are manually set. Hospitals and sure ambulances are where you'll most often see these units. For example, during or after cardiac surgery, such as a heart bypass, many advanced EMTs and all paramedics are trained to identify deadly arrhythmias with a manual defibrillator. The myocardium is in direct contact with the metal plates that make up the electrodes. Internal defibrillators that use paddles placed directly on the heart are commonly utilised in the operating room and, in exceptional cases, in the emergency department during open heart surgery.

Automated External Defibrillators

Automated external defibrillators (AEDs) are lifesaving pieces businesses should have in their lifesaving kit. offers valuable training modules on using an AED. Although a defibrillator can talk you through the instructions of CPR, access to proper training will build your confidence when you must use one to treat sudden cardiac arrest. Therefore, when employees undergo appropriate instruction, they can save lives during cardiac arrest.


Cardioverter-defibrillators are lifesaving devices used in emergencies to save a person's life. They are portable and lifesaving, so Anyone can learn how to use them quickly. Cardioverter defibrillators treat sudden cardiac arrest - when a person has stopped breathing or has had a heart attack. When activated, they provide electric shock therapy, which can restart the heart and help the casualty survive.

Where can you find AEDs?

what is the purpose of an aed

The lifesaving AED (automated external defibrillator) is a lifesaving device used in cardiac arrest. You can find these machines in various places, such as hospitals, shopping malls, and public areas like parks. It is a good skill to know how to use them in a cardiac emergency, so get AED training before any unfortunate event happens!

When is an AED needed?

When it comes to cardiac arrest, there is no second chance. If you witness someone collapse due to a cardiac arrest, you can best try and save their life with an AED (cardio-pulmonary resuscitation) machine. To use this device effectively, first, defibrillator training is mandatory for Anyone who intends to use it on another person in an emergency. The training covers device usage, CPR and first aid procedures - ensuring that everyone who needs to use an AED will know how to do so safely and effectively. There are various scenarios where defibrillation may be required - during childbirth, for example, in maternal cardiac arrest to maintain the cardio-respiratory health of the mother during delivery time.

How to use a defibrillator

Having a defibrillator on-hand can be lifesaving in a heart emergency. So anyone can use it safely and effectively, AED training is required. Automatic AEDs are the most common lifesaving device for users who need to press a button to shock a person in cardiac arrest. Manual defibrillators take more time to operate but can potentially save lives in tricky heart emergencies. You must always follow the health and safety rules to keep you and others helping in the resuscitation safe, especially if you are using oxygen therapy.

Anatomy of a defibrillator

A defibrillator is medical equipment that a first aider can restore cardiac rhythm in cases of cardiac arrest. It functions by delivering shocks through the paddles to the heart to restart it. A defibrillator has three main parts: the monitor, the paddles, and the battery. AEDs are for use only in cases of cardiac arrest - improper use or malfunctions can occur during use and could cause serious injuries or death to the rescuer.

Functions of the heart and lungs

The heart is a vital organ which circulates the blood around the body. It consists of two chambers- the left and right ventricles. When something goes wrong with the heart, it stops pumping blood efficiently, known as cardiac arrest. If cardiac arrest does not receive medical intervention within a short timeframe, death may occur due to brain damage or lack of oxygenation to other organs. AEDs provide electric shocks that can restore circulation (ROSC) and brain function.

We know that use of AEDs is prevalent across many parts of the world; in the UK, more and more locations are raising money to fund the cost of a community AED. Knowing what these machines do and how they work, you will remain confident if someone experiences a cardiac arrest near you.

Frequently Asked Questions

What are the key benefits of taking an AED training course?

Cardiac arrest is a life-threatening emergency. Therefore, it is good to be familiar with how to use an AED (automated external defibrillator). Not only will this knowledge help save a life in an emergency, but it can also teach you how to use other lifesaving equipment, such as CPR and first aid kits. Defibrillator training is mandatory for anyone who wants to work as an EMT, paramedic or firefighter. The benefits of this training include:

  • In cases of cardiac arrest, you can save someone's life in minutes by using these skills.

  • As a result of defibrillation training, people are more likely to be safe when responding to cardiac incidents. This training will teach them how they can use an AED (automated external defibrillator) and CPR (cardiopulmonary resuscitation) correctly and effectively.

Taking a training course can also provide you with important safety information. It's a great way to practice using an AED in a real-life setting. With this lifesaving knowledge, you can increase the survival rate in cardiac arrest. So, are you ready to take up an AED course? Sign up for training today!

Is there anything else that I need to do before undergoing defibrillator training?

what does aed stand for in first aid

There are a few other things that you should take note of before undergoing defibrillator training. For one, make sure that you are familiar with the basic principles of first aid. This training includes knowing how to treat a cardiac arrest victim and perform CPR. In an emergency, see where the nearest defibrillator is and what type it is. You can google your nearest AED location or choose one of the popular apps to search for one. Additionally, be aware of different types of defibrillators and their uses. You should know how to use them safely when an emergency arises.

How often should I train with a defibrillator?

Practice makes perfect! The more often you rehearse how to use a defibrillator, it becomes second nature, and your skills improve over time. You should train with a defibrillator at least once a year to be as prepared as possible should the need arise. The more you know how to use the device, the better your chances of rescuing someone in an emergency.


You must take a defibrillator training course if you work in a high-risk area and are responsible for cardiac arrest resuscitation. This AED awareness course will teach you the basics of defibrillation, including how to use an AED. When you learn these lifesaving skills, you will be able to save lives and protect yourself from potential injuries. Make sure to find a course that suits your needs and schedule a time for training so you can be confident in an emergency.

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