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An automated external defibrillator or automatic electronic defibrillator (AED) is a portable electronic device that automatically diagnoses the life-threatening cardiac arrhythmias of ventricular fibrillation (VF) and pulseless ventricular tachycardia, [1] and is able to treat them through defibrillation, the application of electricity which stops the arrhythmia, allowing the heart to re ...
Defibrillation is a treatment for life-threatening cardiac arrhythmias, specifically ventricular fibrillation (V-Fib) and non-perfusing ventricular tachycardia (V-Tach). [1] [2] A defibrillator delivers a dose of electric current (often called a counter-shock) to the heart.
Defibrillation threshold indicates the minimum amount of energy needed to return normal rhythm to a heart that is beating in a cardiac dysrhythmia.Typical examples are the minimum amount of energy, expressed in joules, delivered by external defibrillator paddles or pads, required to break atrial fibrillation and restore normal sinus rhythm.
Portable defibrillators can improve the odds of surviving cardiac arrest dramatically, ... too often, bystanders freeze in the chaos of the moment and are not in a state of mind to check for an AED.
When heart arrest occurs outside of a hospital, the main treatment is a shock with an automatic external defibrillator. These defibrillators are commonly installed in public places like train ...
In this situation, early defibrillation is the key to returning the patient's heart back to a normal rhythm. When a defibrillator is not readily available, a rescuer or bystander should keep the blood flowing by performing chest compressions and rescue breaths at an age-appropriate rate until it is.
A defibrillator will deliver an electrical current through a pair of electrodes placed on the person's chest. This is thought to depolarize myocardial tissue thereby stopping the arrhythmia. [100] Defibrillators can deliver energy as monophasic or biphasic waveforms, although biphasic defibrillators are the most common. [101] [102]
A new type of internal heart defibrillator, implanted for the first time in Michigan at Sparrow Hospital, could help younger patients live longer.