AEDs: The Basics

/ Delta Emergency Support Training/

Automated External Defibrillators (AED): What You Need to Know

An Automated External Defibrillator, or AED, is a portable electronic device used to treat sudden cardiac arrest (SCA) in conjunction with Cardiopulmonary Resuscitation (CPR). AEDs are designed to be used by anyone, regardless of their level of training or experience, to help save lives in emergency situations.

A person wearing gloves is performing first aid on a CPR dummy, while following AED directions. The person's hands are on the chest of the dummy, as if performing chest compressions. There is an AED device next to the dummy, with the pads attached to the dummy's chest.

How Does An AED Work?

AEDs work by analyzing the heart rhythm of a person experiencing SCA, and then delivering an electric shock to restore the heart's natural rhythm. The device comes with two sticky pads with attached wires, called electrodes. These pads are placed on the person's chest, and the AED's computer analyzes the heart rhythm through the electrodes. If the AED determines that the person's heart is in ventricular fibrillation or another treatable rhythm, it will prompt the user to deliver a shock. However, if the person's heart is in asystole, which is the absence of any heart rhythm, the AED will not deliver a shock. It's important to note that the use of an AED on a person with no heart rhythm (asystole) is not recommended because it is unlikely to be effective.

AED + CPR

CPR, or cardiopulmonary resuscitation, is a life-saving technique used to help someone who is in cardiac arrest. It involves a combination of chest compressions and rescue breaths to manually circulate oxygen-rich blood through the body when the heart is not beating effectively. CPR is performed when someone is unconscious, not breathing, and has no pulse.

When someone experiences sudden cardiac arrest (SCA), CPR should be performed while waiting for an AED to arrive or be retrieved. The combination of CPR and AED can significantly increase the chances of survival.

Why Are AED’s Important

Sudden cardiac arrest (SCA) is a leading cause of death worldwide, with millions of people experiencing it each year. AEDs, or Automated External Defibrillators, are critical in treating SCA because they can deliver a life-saving shock within minutes of the onset of symptoms. AEDs are easy to use, portable, and equipped with clear instructions and voice prompts. They can be stored in public places, homes, and businesses to provide quick access in case of an emergency.

Where Can I Find An AED?

AEDs are becoming more common in public places, such as airports, shopping centers, and schools. Many workplaces are also beginning to invest in AEDs for their employees and customers. It's important to know where the nearest AED is located in case of an emergency. Look for AEDs in clearly marked cabinets, often mounted on the wall. Some AEDs come with an audible alarm or flashing light to make them easier to find in an emergency. If you are unsure where an AED is located, ask your employer or contact your local fire department or ambulance service for more information.

How Can You Use An AED?

AEDs are designed to be simple and easy to use. Most devices come with clear verbal instructions and visual prompts that guide the user through the steps of using the device. Here is a brief overview of how to place AED pads on adults and children:

  • For adults: Place one pad on the upper right side of the chest and the other pad on the lower left side of the chest, as shown in the diagram on the AED or in the instructions. It's important to make sure the pads are placed correctly and securely on the skin.

  • For children: Pediatric pads should be used for children under the age of eight or weighing less than 55 pounds. These pads have a lower energy setting to avoid harm to the child. Place one pad on the center of the child's chest and the other pad on the child's back, just below the shoulder blades.

It's important to note that AEDs should not be used on a wet surface or in water. The chest should be shaved and dried if necessary to ensure good contact with the electrode pads. Sweat and other moisture can interfere with the proper function of the device.

Automated External Defibrillators are an important tool in treating sudden cardiac arrest. These devices can be used by anyone, regardless of their level of training or experience, to help save lives in emergency situations.