Should you buy a personal AED for your home? Mayo Clinic lists the pros and cons

PHOENIX - An AED may save your life during cardiac arrest. Weigh the pros and cons to see if you should get one.

If you've ever watched a TV medical show, you've probably seen someone on the brink of death shocked back to life by a doctor who yells "clear" just before delivering a jolt of electricity to the chest.

This type of procedure isn't limited to the hospital though. It can be done in your home if you have an automated external defibrillator (AED). Home AEDs are available without a prescription. The question is whether an automated external defibrillator could be useful to you.

AEDs aren't for everyone. An AED can only resuscitate you if you have the specific type of heart rhythm problem that AEDs can correct. And in some circumstances, other emergency medical procedures, such as cardiopulmonary resuscitation (CPR), may be just as likely to save your life as shocks from an AED.

Consider the pros and cons of owning an AED. Then you and your doctor can decide if it's worth buying the device for home use.

When would you need to use an AED?

Cardiac arrest usually occurs when your heart's electrical activity becomes disrupted and the heartbeat gets dangerously fast (ventricular tachycardia) or chaotic (ventricular fibrillation). Because of this chaotic, often irregular heart rhythm (arrhythmia), your heart stops beating effectively and can't adequately pump blood.

During cardiac arrest, your brain and other vital organs quickly become starved of blood and the life-sustaining oxygen and nutrients it carries. If you survive, you may have permanent damage to your brain and other organs. The sooner your heart's rhythm is restored the better.

Cardiopulmonary resuscitation (CPR) is a vital step in the lifesaving process. CPR can keep some blood flowing to your heart and brain for a short time.

But often only defibrillation can restore the heart's normal rhythm and ultimately save your life. This is especially true if you experience a type of abnormal heart rhythm known as ventricular fibrillation.

If you're experiencing ventricular fibrillation and an AED is on hand, a bystander could grab it and easily connect it to your chest to check your heart rhythm. If your heart rhythm can be treated with an electric shock, the AED automatically sends an electrical current to your heart muscle.

That jolt could reset your heart into a normal rhythm, possibly saving your life. If you use an AED on someone, it's still critical that you call 911 or your local emergency services first, to get help on the way. Remember to begin CPR before you turn on the AED and start CPR again after the shock if CPR is still needed.

The Food and Drug Administration has approved an over-the-counter AED for home use. Because it's available over-the-counter, you don't need a prescription to buy it.

The only automated external defibrillator approved for home use without a prescription is the Philips HeartStart Home Defibrillator. The HeartStart AED can be used on children as young as 8 who weigh at least 55 pounds. 

However, use on children requires a separate pad cartridge for infants and children. Although a prescription isn't required for the AED, a prescription is needed for the infant/child pad cartridges.

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