Buzz
If you witness someone collapsing in a public space, you likely know to call 911 and start chest compressions. However, there’s one additional step that could make a life-saving difference: send someone to retrieve the nearest AED.
An automated external defibrillator (AED) is a device that delivers an electric shock to the heart, much like the paddles seen in TV dramas. These compact, easy-to-use devices are placed in many public areas and are designed for use by people with minimal or no training.
AEDs are effective because many heart attacks are caused by ventricular fibrillation, where the heart’s cells fail to beat in sync. Instead of pumping normally, the heart shakes or quivers, unable to circulate blood. A shock from an AED can restore the heart’s rhythm and significantly increase survival rates compared to CPR alone.
Know where your nearest AED is located.
Whenever I spot an AED while out, I make a mental note of it. For instance, there’s one at my child’s preschool, positioned right by the main entrance. AEDs are often in easily accessible, high-traffic areas. The Pulsepoint app provides a map of AEDs, and you can add new ones you discover. It’s also a good idea to inquire at the front desk of frequent places (like work or school) about the location of their AED.
When you’re ready to use the AED, make sure to dial 911 and begin chest compressions while someone retrieves the device.
Follow the on-screen instructions.
If you take a CPR class, you’ll likely get the opportunity to use a training version of an AED. What’s remarkable is that you don’t need to memorize every step—the machine will talk you through the process and tell you exactly what to do.
After you attach the electrodes to the person’s chest, the AED will analyze the heart’s electrical activity to determine if the individual is experiencing ventricular fibrillation. If the heart rhythm is normal, the machine won’t administer a shock. You don’t need to know exactly why the person collapsed—just place the device and let it do its job.
Here’s a complete set of instructions from the Red Cross. It specifies that an AED is for a “non-breathing child aged 8 or older who weighs more than 55 pounds, or an adult.” If the AED determines a shock is needed, make sure no one is touching the person, and then press the button. After delivering the shock or if no shock is recommended, continue CPR as usual.
