What is an automated external defibrillator and how do you use it?
An automated external defibrillator (AED) is a lightweight, portable device that delivers an electric shock through the chest to the heart. The shock can potentially stop an irregular heart beat (arrhythmia) and allow a normal rhythm to resume following sudden cardiac arrest (SCA).
How does a defibrillator work physics?
Most defibrillators are energy-based, meaning that the device charges a capacitor to a selected voltage and then delivers a prespecified amount of energy in joules. The amount of energy which arrives at the myocardium is dependent on the selected voltage and the transthoracic impedance (which varies by patient).
How does automated external defibrillator help?
An automated external defibrillator (AED) is a medical device designed to analyze the heart rhythm and deliver an electric shock to victims of ventricular fibrillation to restore the heart rhythm to normal. Ventricular fibrillation is the uncoordinated heart rhythm most often responsible for sudden cardiac arrest.
Does AED stop heart?
During sudden cardiac arrest, the heart stops beating normally. The AED can eliminate the abnormal heart rhythm by depolarizing the entire electrical system of the heart. This allows the heart to fully repolarize and recommence normal electrical function.
Can you use an AED without training?
Although formal training in the use of an AED is not required, AED and CPR certifications are recommended to help you increase your comfort and level of confidence. However, AEDs are intended for use by the general public — with or without specialized training.
How capacitors work in a defibrillator?
Capacitors. The most important component of a defibrillator is a capacitor that stores a large amount of energy in the form of electrical charge, then releases it over a short period of time. A capacitor consists of a pair of conductors (e.g. metal plates) separated by an insulator (called a dielectric).
Does a defibrillator use a capacitor?
A defibrillator is a device used to treat ventricular arrhythmias. A capacitor is the most important part of the defibrillator. A capacitor is formed by a pair of conductors (metal plates) separated by an insulator (a layer of air). A capacitor stores electrical energy in the form of electrical charge.
Is AED training mandatory?
Expected AED users must receive training from and be certified by the American Heart Association, the American Red Cross, or an equivalent state or nationally recognized course, in CPR and in the use of an AED, and the users must maintain their certification in CPR and AED use.
Do AED expire?
Fortunately, most AED batteries last for anywhere from two to five years in standby mode. Typically, an AED battery will have three dates printed on it: a manufactured-by date, an install-by date, and an expiration date. An AED battery should be used within five to seven years of its manufacturer date.
Do you do CPR before AED?
If an AED is immediately accessible, get the AED and use it right away. However, in all likelihood, there will not be an AED close enough and CPR should be started first. If there is only one person present, that person should start CPR right away and continue until first responders arrive.
How do defibrillators (AEDs) work?
How do defibrillators (AEDs) work? Automated External Defibrillator’s (or AED’s) are devices that treat the most common cause of sudden cardiac arrest by delivering an electrical shock to the heart. AEDs treat an abnormal heart rhythm called Ventricular Fibrillation (VF) that causes the heart to stop circulating blood.
How do you use a defibrillator?
If the rhythm indicates that defibrillation can help, the machine will either instruct you to press the shock button or to step back from the electrodes as it administers the shock automatically. Make sure nobody touches the patient at this time.
How long do you do CPR on a defibrillator?
7Begin CPR after delivering the shock. Or, if no shock is advised, begin CPR. Perform 2 minutes (about 5 cycles) of CPR and continue to follow the AED’s prompts. If you notice obvious signs of life, discontinue CPR and monitor breathing for any changes in condition.
How do I use an AED to perform CPR?
Before Using the AED. Or, if no shock is advised, begin CPR. Perform 2 minutes (about 5 cycles) of CPR and continue to follow the AED’s prompts. If you notice obvious signs of life, discontinue CPR and monitor breathing for any changes in condition. To see the steps to use an AED performed, watch our video Using an AED.