7 Common AED Myths: What You Really Need to Know

Imagine a CPR classroom with our fuzzy puppet student staring nervously at an AED.

“Hold on. You want ME to use that thing?”

For many people, that’s exactly how an AED feels at first. It looks medical, sounds technical and is something they hope they’ll never need.

But much of the fear surrounding AEDs comes from common misconceptions.

Let’s separate the myths from the facts.

Myth #1: Only Medical Professionals Can Use an AED

Fact: Public-access AEDs are designed to help ordinary people respond to sudden cardiac arrest.

AEDs provide voice and/or visual prompts that guide the rescuer through the process.

CPR and AED training is valuable because it builds familiarity and confidence, but you don’t have to become a healthcare professional to understand the basic role of an AED.

Our fuzzy student can relax.

The AED helps guide the response.

Myth #2: I Could Accidentally Shock Someone Who Doesn’t Need It

Fact: The AED analyzes the person’s heart rhythm and determines whether a shock is appropriate.

The rescuer doesn’t decide whether a shock should be given.

If the AED determines that a shock isn’t indicated, it will not advise a shock as part of its normal operation.

That’s one of the reasons AEDs are designed for public-access emergency response.

Myth #3: CPR and an AED Do the Same Thing

Fact: CPR and AEDs have different roles.

CPR uses chest compressions to help circulate blood during cardiac arrest.

An AED analyzes the heart’s electrical rhythm and determines whether a shock is appropriate.

During sudden cardiac arrest, CPR and early AED use are complementary parts of the emergency response.

Myth #4: An AED Is Too Complicated to Use

Fact: Modern public-access AEDs are designed to provide step-by-step guidance.

Once activated, the AED provides instructions for what to do next.

Different AED models have different features, but the basic idea remains the same: the device is designed to help guide a rescuer during a highly stressful emergency.

“Wait… it tells me what to do?”

Yes, fuzzy friend. That’s the idea.

Myth #5: Once You Buy an AED, You’re Done

Fact: AED ownership requires ongoing readiness and maintenance.

AED electrode pads and batteries may have expiry dates, replacement schedules or service-life requirements.

Organizations should regularly check their AEDs and follow the manufacturer’s instructions for maintenance.

An AED program should keep track of important information including:

•           AED locations

•           Electrode pad expiry dates

•           Battery status or replacement dates

•           Routine inspections

•           Equipment issues

•           Training and program documentation

Buying an AED is the first step.

Keeping it ready is what makes the program work.

Myth #6: Everyone Will Know Where the AED Is

Fact: AED visibility and accessibility matter.

An organization can own an AED, but if nobody knows where it is during an emergency, valuable time may be lost.

AED locations should be clearly identified, accessible and incorporated into emergency planning.

Ask your team today:

Where is our closest AED?

If people can’t answer, that’s an opportunity to improve your emergency preparedness.

Myth #7: Sudden Cardiac Arrest and a Heart Attack Are the Same Thing

Fact: They are different medical emergencies.

A heart attack generally involves reduced or blocked blood flow to part of the heart.

Sudden cardiac arrest occurs when the heart’s electrical system malfunctions and the heart stops pumping blood effectively.

A heart attack can sometimes lead to cardiac arrest, but the terms shouldn’t be used interchangeably.

What Should You Do During Suspected Sudden Cardiac Arrest?

If someone is unresponsive and not breathing normally:

Call 911. Start CPR. Get an AED.

Turn on the AED when it arrives and follow its prompts. Continue following CPR and AED instructions until emergency responders take over or the person shows signs of recovery.

Frequently Asked Questions About AEDs

Can anyone use an AED?

Public-access AEDs are designed to provide instructions that members of the public can follow during an emergency. CPR and AED training is recommended to improve familiarity and preparedness.

Can an AED shock a conscious person?

AEDs analyze the heart rhythm and determine whether a shock is appropriate. They aren’t designed to simply deliver a shock whenever someone presses a button.

Do AEDs require maintenance?

Yes. AED programs should include regular readiness checks and appropriate replacement of pads, batteries and other components according to manufacturer recommendations.

How often should an AED be checked?

Follow the manufacturer’s recommendations and any applicable requirements for your AED program. Many organizations also establish routine documented inspections to ensure equipment remains ready.

Should employees know where the AED is?

Yes. AED awareness should include knowing where devices are located and how to quickly access them during an emergency.

Is CPR still necessary if an AED is available?

CPR and AED use serve different purposes and are both important parts of cardiac arrest response. Follow emergency dispatcher instructions and the AED’s prompts.

The Biggest AED Myth?

Maybe it’s this:

“Someone else will know what to do.”

Sudden cardiac arrest doesn’t schedule an appointment.

Preparation happens before the emergency.

Know where your AEDs are. Keep them maintained. Learn CPR. Make AED awareness part of your workplace, school or community emergency plan.

And remember our fuzzy CPR student:

The AED might look intimidating before the class starts.

By the end?

“Okay… I can do this.”

Quick Answer

Are AEDs difficult to use? Public-access AEDs are designed to guide rescuers through an emergency with voice and/or visual instructions. During suspected sudden cardiac arrest, call 911, begin CPR, retrieve an AED and follow the device’s prompts.